Amir Reza Abbasi

  In this study, the adsorption of Direct Red 23 (DR23)molecules as a color agent on metal-organic frameworks (MOFs) UiO?66, UiO?66-NH2,and HKUST-1 as absorbents were investigated. MOFs based on zirconium (Zr) metal(UiO) have shown a good adsorption capacity and after the adsorption process,they maintained their stability and had the ability to be reused, whichindicates the stability of these nano absorbents in the process of recovery andit is reusable. Compared to the UiO-66-NH2 adsorbent, the UiO-66nano-adsorbent showed a higher removal efficiency and adsorption capacity,which can be attributed to its larger pore size and higher surface area. HKUST-1nano-adsorbent based on copper (Cu) metal showed higher removal ability thanadsorbents based on Zr. These nano-adsorbents have been identified andinvestigated by various techniques such as scanning electron microscopy(FE-SEM), transmission electron microscopy (TEM), thermal gravimetric analysis(TGA), powder X-ray diffraction (PXRD), and infrared spectroscopy. (FT-IR).

  isphenol A [1] is a group of known endocrine disrupting compounds [2] and is an industrial chemical that is organic and toxic in aqueous media, such as: surface water, groundwater, Sewage, runoff, and waste disposal leachate have been identified and are major applications in the production of polycarbonate plastics in food storage containers such as water bottles and baby feeding bottles, food and beverage lining, and resin production. Has epoxy. The main problem in using this substance is its migration to the food inside the containers that contain bisphenol A and in the long run can cause serious problems such as thyroid disorders, blood pressure disorders and cardiovascular diseases, negative effects on reproductive factors. Men, obesity and .... Therefore, the identification of this toxic substance and its isolation and measurement in order not to exceed the permissible concentration for the human body is of great chemical importance. 1- In the first work, in order to identify and measure bisphenol A using a simple and practical method, a silver nanoparticle detector [3] with different carbon dots was used. In this work, first, environmental conditions such as acidic, alkaline or neutral environment, selection of carbon dot walnut, as well as the order of addition of reagents were optimized; Alkaline, nanoparticles made of walnut shell carbon and the order of adding the reagents are as follows: 1. H2O & BPA- 2.NaOH- 3.Ag   In this method, the standard deviation of 0.04, the detection limit was about 0.92 micrograms per liter. 2- In the second work, in order to identify and measure bisphenol A using a simple and practical method, other grease reactants [4] were used as an indicator for bisphenol A. In this method, various conditions such as the selection of the reactant and the order of addition of materials were optimized. Finally, 2-nitroaniline, sodium nitrite, chloric acid and sodium carbonate were used to identify bisphenol A using the following order: 1. (HCl + NaNO2 + 2-NitroAnilin) ??- 2.BPA -3.Na2CO3 The standard deviation in this method was 0.01, the detection limit was calculated to be about 0.65 micrograms per liter. 3. In the third work, polymeric adsorbents were used to remove bisphenol A from aqueous media. In order to be simple, practical, cheap and available, the polymer adsorbent selected was polyurethane (sponge [5]). Was calculated on the adsorbent g. 4. In the fourth work, in order to separate bisphenol A from aqueous media, activated carbon was used as the adsorbent. At room temperature, at pH = 10 and for 35 minutes using 0.04 g of adsorbent, the adsorption capacity of bisphenol A by activated carbon was 16.66 mg / g of adsorbent. Also, for desorption of bisphenol A from activated carbon, ethanol solution was used for washing. [1] BPA [2] ECDs [4] griss [5] spong

In line with the goals of green chemistry, in this project we used chitosan as an environmentally-friendly substrate. The catalyst was prepared in three steps. Due to the presence of amino groups at the surface of chitosan, it can be easily modified. Therefore, we modified its surface using 1,3-di-bromopropane so that the desired nucleophile could be attached. In the next step, we attached the 2-aminopyridine compound to its surface. The binding of this compound will be through pyridine nitrogen. Finally, we magnetized its surface by immobilizing Fe3O4 nanoparticles. This method has advantages such as environmental compatibility, economical, simple preparation and ease of catalyst recovery. Finally, we used nanocatalysts prepared for the synthesis of 1,4-dihydropyridine and polyhydroquinoline as well as for the synthesis of pyrazole compounds. Using an environmentally-friendly support, easy separation capability, mild reaction conditions, and catalyst activity after several catalytic cycles can be considered as advantages.   

This study investigated the filtration of Direct RED-16 molecules as aqueous contaminants by MOFS coated on the gauze bandage as an adsorbent. The six samples were synthesized under different conditions, which showed good adsorption capacity. The adsorption kinetics follow more than the pseudo-second-order kinetic model, which indicates the adsorptive tendency to chemical absorption. The maximum adsorption capacity is related to Sample 5 (61.12 mg/g) with a velocity constant of 0.00656 g?mg.min. The greater adsorption capacity of sample-5 can be attributed to the larger surface area and larger pore size than other samples. Samples were identified by X-ray powder diffraction (PXRD), Thermogravimetric analysis (TGA), Fourier transform infrared (FT?IR), and visible-ultraviolet (UV?Vis) optical spectroscopy.   

   In this study, molecular dynamics simulations for interactions between anion and cation of two cationic ionic liquid ions (1 and 6 bis (3-methylimidazolium-1-yl) hexane) with ionic liquid anions (bisfluoromethyl sulfonylimide) in the pure state, in the presence of Graphene capacitor plates have been investigated in the presence of oxide graphene plates in different states and in the presence of graphene plates containing lithium atoms in different states. To perform the simulation, the molecules were first plotted by Gaussian software and then optimized by Gaussian software using the B3LYP method and the 6-31G base set (d, p). The results of quantum calculations showed that there is a strong interaction between cation and anion. Using the OPLS force field, simulations were performed in two sets of NVT-NPT to determine the structural and dynamic properties of dual-ion ion fluid with nanosheets (as a capacitor). Using simulation, density, temperature, total energy, van der Waals, Colombic and radial distribution function diagrams, MSD and the diffusion of ionic liquid molecules on the surface of graphene oxide valithium capacitor plates have also been calculated. The results of the radial distribution function (RDF) show that the adsorption between ionic liquid molecules on the surface of graphene oxide and lithium capacitors is affected by oxygen and lithium atoms. Also, the results of MSD and RDF indicate that the added atoms (oxygen) And lithium) play an essential role in the structural and dynamic properties of these molecules. MSD results showed that the penetration of ionic liquid molecules with lithium graphene capacitor plates was greater than the penetration of molecules with oxidized graphene capacitor plates

   In the first part of this research, a simple hydrothermal method for the green synthesis of carbon dots from green walnut skin is presented. Then, silver nanoparticles were prepared by carbon dots prepared from green walnut skin by green synthesis method. In the second part of the research, using the interaction of silver nanoparticles with anions, cyanide and iodide ions were identified and measured in different real samples. The effect of various factors on increasing the interaction of nanoparticles and ions and thus increasing the adsorption of solutions was investigated and optimized.The basis of this method is to change the adsorption rate of silver nanoparticle solution in the presence of different concentrations of cyanide and iodide ions.RE(Random error) for measuring cyanide ion in university well and laboratory water samples was reported to be 6.7% and 8.03%, respectively.RE(Random error) has also been reported to measure iodide ions in laboratory and spring water samples at 1.7% and 5.95%, respectively.

   AbstractIn wastewater treatment, a variety of efficient issues such as theeco-friendly and cost-effective nanomaterials have been developed to have theunique functionalities for the potential decontamination of industrial effluents,surface water, ground water and drinking water. Amongorganic contaminants, the dyes are considered to be the serious pollutants dueto their toxicity. Conventional water treatment processes are very diverse andinclude physical decolorization techniques (such as, sedimentation, filtration,adsorption, and reverse osmosis), chemical decolorization techniques (such as,neutralization, recovery, chemical oxidation and ion exchange methods), andbiological decolorization techniques.Among the various kind of photocatalytic semiconductors, the metaltungstates have grabbed the considerable attention. In this research, the binary nanocomposite of cobalttungstate/reduced graphene oxide hasbeen synthesized by the hydrothermal method. One of the problems that limited the use of thesenanoparticles in the photocatalyst process is the rapid recombination ofelectrons and hole. Therefore, present research has focused on the modification of cobalt tungstate/reduced graphene oxideby adding nickelhydroxide. The results showed that the structure of the Co/Ni/RGO had asuitable photocatalytic activity in the destruction of the direct red 16(DR16). The maximum photodegradation efficiency of DR16 were obtained at concentration of 5 ppm, pH of solution,catalyst loading 2 g/L and irradiationtime 60 minutesconditions.   The catalyst was foundto be reusable, even after several runs and its catalytic activity was almostthe same as that of freshly used catalyst. The amount of the recovered catalyst(wt.%) was measured after each run. The results showed that weight losses ofthe catalyst during the operation was negligible. The synthesized photocatalystwas characterized by using the Fourier transform infrared, scanning electronmicroscopy, X-ray diffraction, Transmission electronmicroscopy, X-ray photoelectron spectroscop, electron dispersive X-ray, diffuse reflectance spectra, andphotoluminescence.

Design and preparation of a novel photocatalyst, based on polymethylhydrosiloxane (PMHS) was reported. To investigate the straightforward preparation of PMHS-PEG-xT-PW, different characterization methods including FTIR, XRD, FESEM, UV-Vis DRS, EDX, PL, and EIS were utilized. The prepared photocatalyst was used for the photocatalytic degradation of Rhodamin B (RhB) under incident visible light irradiation and also efficiency of the catalyst was examined under sun light irradiation. To study the efficiency of this research for the photodegradation of RhB, the effect of different crucial parameters such as time of illumination, catalyst loading, RhB concentration, pH of the solution, reusability function of the catalyst and scavenger experiments were checked. Trapping tests showed that the photogenerated O2•- and 1O2 are the main active species involved in the photocatalytic process. Photoactivity of glass coated PMHS-PEG-xT-PW were also investigated in photodegradation of the RhB which showed about 90% dye removal after 4 h. Thus introduced photocatalyst showed excellent activity in suspension and fix bed reactor. This inorganic based polymer can not only extend the absorption wavelength range of TiO2 but also consequently increase life-time of excited electron and hole with an appropriate viscosity for casting, which improve the photocatalytic efficiency of the photocatalyst in fix bed reactor too. Stability and reproducibility of coated film were also evaluated. The charge transfer resistance was also decreased compare with bare TiO2 which was proved by Nyquist and Bode plots.

  In this research, in-situ modification of the three-dimensional Zr-based metal-organic framework, NH2-UiO-66(Zr) [Zr6O4(OH)4(O2C–C6H4–CO2-NH2)6], (UiO = University of Oslo), with different temperatures of Zn and Ti was carried out via a cation exchange approach. The prepared samples including NH2-UiO-66(Zr/Ti 70 ?C), NH2-UiO-66(Zr/Ti 80 ?C), NH2-UiO-66(Zr/Ti 90 ?C), NH2-UiO-66(Zr/Ti 100 ?C), NH2-UiO-66(Zr/Ti 110 ?C), NH2-UiO-66(Zr/Zn 70 ?C), NH2-UiO-66(Zr/Zn 80 ?C), NH2-UiO-66(Zr/Zn 90 ?C), NH2-UiO-66(Zr/Zn 100 ?C), NH2-UiO-66(Zr/Zn 110 ?C) exhibited a red shift in the visible light region. Accroding to the reduction of bandgap in some samples particulary in Ti samples, we can conclude that, modified MOFs (metal-organic frameworks) can be exhibited potential photocatalytic application. The resulting characterized with powder X-ray diffraction (PXRD), field emission scanning electron microscopy (FE-SEM) and energy-dispersive X-ray spectroscopy or EDS elemental analysis and mapping, diffuse reflectance UV-Vis spectroscopy (DRS UV-Vis , Photoluminescence spectroscopy (PL) , Brunauer-Emmett-Teller (BET) porosimetry )and total reflection infrared (ATR-IR) spectroscopy, X-ray photoelectron spectroscopy (XPS).

Synthesis, Characterization and Application of GO-CPTMS-Melamine-CAN as a new Heterogeneous Nanocatalyst for the Preparation of 2-Substituted Benzoimidazoles and Benzothiazole  

  Abstract Chloroform is a colorless and odorless liquid and is non-flammable with special smell. This compound has applications is laboratory and industry. The purpose of this study was to determine chloroform in various water samples using two simple colorimetric methods based on the fuji­wara and resorcinol reaction. The variables of this study included time, sodium hydroxide concentration, volumes sodium hydroxide, resorcinol and pyridine. All of the variables were optimized of by experimental design. The samples use for determining of chloroform include drinking water and pool water. The linear concentration range and detection limit obtained by first method using pyridine were 0.0089-1.39 mg/L and 0.0087mg/L respectively, and the linear concentration range and detection limit obtained by second method using resorcinol were 0.007 mg/L and 0.011-1.195 mg/L, respectively. In both methods, relative standard deviation and relative error for determination of chloroform in real samples were less than 10%. These two methods can be used as simple and fast methods for determination of chloroform the method have low cost and can be used to check the quality control of the water in terms of the amount of chloroform in water survey. In the third work, a simple and cost-effective method for the determination of arsenic by spectrophotometry based on the variation of absorbance of silver nanoparticles in the presence of arsenic was proposed. In this work, firstly silver nanoparticles were synthesized by tobacco carbon dots. The linear range and detection limit of method for the determination of arsenic were 0.1-10 mg/L and 0.1 mg/L, respectively.   Relative standard deviation and relative error for determination of arsenic in real rice samples were less than 10%.  

In this research,post-synthesis modification of amino-functionalized Zr-based metal-organicframework NH2-Uio-66 (Zr) with different percentages of Zn and Tiwas performed via a cation exchange approach. The prepared samples including NH2-Uio-66(Zr-Ti 25%), NH2-Uio-66 (Zr-Ti 50%), NH2-Uio-66 (Zr-Ti75%), NH2-Uio-66 (Zr-Zn 25%), NH2-Uio-66 (Zr-Zn 50%), NH2-Uio-66(Zr-Zn 75%) and as well as in situ modified NH2-Uio-66 (Zr-Ti 50%)exhibited a red shift in the visible light region. Regarding the reduction ofbandgap, modified MOFs can be had potential photocatalytic application. The resultingsamples were characterized with powder X-ray diffraction (PXRD), field emissionscanning electron microscopy (FE-SEM) and EDS mapping, X-ray photoelectronspectroscopy (XPS), X-ray fluorescence (XRF), UV-Vis diffuse reflectancespectrum (UV-Vis DRS), Brunauer-Emmett-Teller (BET).  

of controlled release and targeted delivery by using external magnetic field. This studydescribes a rational design for the choose of the functional monomer and cross-linker inorder to develop a targeted delivery system for Rifampicin. Based on literature,methacrylic acid (MAA) as a functional monomer and ethylene glycol dimethacrylate(EGDMA) cross-linker agent with 4:20 molar ratio was investigated for imprinting ofRifampicin on the surface of magnetic core via core-shell technology. Afterwards, theperformance of magnetic-MIP and MIP nanoparticles was tested as anticancer carrier onMCF-7 cell lines, the results of various in-vitro experiments were studied. The percentageof cell cytotoxicity for cancer cells increased from 35% for pure drug to 81% for MMIPnanoparticle, However, no significant change was observed in the cell cytotoxicity onnormal cells.  

  The interaction of SnMe2Cl2(bu2bpy)complex with calf thymus DNA (ct-DNA) has been explored following, using spectroscopic methods, viscosity measurements, Atomic force microscopy, Thermal denaturation and Molecular docking . It was found that Sn(IV) complex could bind with DNA via intercalation mode as evidenced by hyperchromism and bathochromic in UV–Vis spectrum; these spectral characteristics suggest that the Sn(IV) complex interacts with DNA most likely through a mode that involves a stacking interaction between the aromatic chromophore and the base pairs of DNA. In addition, the fluorescence emission spectra of intercalated methylene blue (MB) with increasing concentrations of SnMe2Cl2(bu2bpy) represented a significant increase of MB intensity as to release MB from MB-DNA system. Positive values of ?H and ?S imply that the complex is bound to ct-DNA mainly via the hydrophobic attraction. Large complexes contain the DNA chains with an average size of 859nm were observed by using AFM for Sn(IV) Complex–DNA. The Fourier transform infrared study showed a major interaction of Sn(IV) complex with G-C and A-T base pairs and a minor perturbation of the backbone PO2 group. Addition of the Sn(IV)complex results in a noticeable rise in the Tm of DNA. In addition, the results of viscosity measurements suggest that SnMe2Cl2(bu2bpy) complex may bind with the >Excellent agreement was obtained between the experimental and theoretical results with respect to the binding forces and binding constant.

  The purposes of this thesis is preparing nanofiltration membranes with high pure water flux and antifouling properties and applying them for decolorization from industrial wastewater. To obtain this target, polyethersulfone nanocomposite membranes modified with three types of carbon nanofillers; graphene oxide, carbon dot and pure multi walled carbon nanotubes and also ionic/ non-ionic surfactants were used to examine the effect of them on preventing the agglomeration of nanoparticles. All of the membranes were prepared via phase inversion method.   The effects of the nanoparticle and ionic and non-ionic surfactants of cetylethremethyle ammonium bromide (CTAB), sodium dodecyl sulfate (SDS) surfactant and Triton x-100 on the morphology and performance of the prepared membranes were perused in terms of pure water flux, antifouling properties and dye rejection. All of the modified membranes were prepared in constant percent of carbon nanofillers (0.5wt.%).   The existence of hydrophilic functional groups on the surface of carbon nanofillers were proved by FT-IR spectra. X-ray diffraction (XRD)   was applied to indicate the crystalline structure of carbon dot and transmission electron microscopy (TEM) was used to examine the size of nanoparticles. Also atomic force microscopy (AFM) images were prepared to study the surface of membranes and water contact angle (WCA) was measured to examine the hydrophilicity of prepared membranes. As well as scanning electronic microscopy (SEM) images were prepared to study the morphology of   membranes and the effect of carbon nanofillers and surfactants on membrane’s morphology. All of the membranes were studied in term of nanofiltration performance by Direct-Red16 rejection as an azo dye and all of   modified membranes show dye rejection above the 90%. Also the optimum membrane(M4) among graphene oxide embedded membranes was selected and that was investigated in order to dye removal from algal wastewater’s Islam Abad treatment plant. This membrane showed dye removal ability near 100%. It is concluded that all of the modified membrane with carbon nanofiller and ionic surfactants displayed better performance in terms of the pure water flux, dye removal and antifouling properties.

Population growth and industrial expansion, caused water pollution problem to be considered. Urban and industrial wastewater is one of the environmental pollution factors. Therefore, it is necessary that this wastewaters have been treated and returned to the nature. One of the limitations for reuse of wastewaters is the presence of color in the sewage. Many natural and industrial colors are poisonous and carcinogenic. Membrane processes are very effective for wastewaters treatment, especially the removal of dye. In the first part of this study, UF and NF membranes with different PVP percentages were synthesized to find membranes with the highest flux and FRR. From these membranes, the UF membrane containing 1 and 2% PVP, and NF membrane containing 2% PVP were selected as the optimal membrane, these membranes were modified by using a layer-by-layer assembly with polymers poly (4-styrenesulfonic acid-co-maleic acid) sodium salt (negative charged) and poly (allylamine hydrochloride) (positive charged), have been modified. Due to the placement of each of the polymers in the top layers on the membrane surface, the charged of membrane is determined. To investigate the effect of electrostatic atraction and repulsion and its effect on the removal of dye, two dyes of Direct red 16 and Melthylen blue have been used. These colors pass through membranes with the same and opposite charged surfaces, and the dye removal rejection has been checked. Due to the flux values, FRR and dye rejection of modified membranes, the UF membrane with 1% PVP was selected as the final optimal membrane. This membrane was characterized by atomic force microscopy (AFM), water contact angle (WCA), scanning electronic microscopy (SEM) and permeate test by cross-flow system.

   In recent years, considerable attention has been paid in design and synthesis of a class of new crystalline porous materials known as metal–organic frameworks (MOFs). These porous materials have great potential for a wide range of applications like separation, ion exchange, conductivity, drug delivery, catalysis, gas storage and selective gas adsorption due to their large surface area, tailored pore volume and designable chemical environment. MOFs are typically constructed by connecting secondary building units (SBUs) consist of metal ions with organic connectors to produce various networks. They are completely regular, have high porosity, highly designable frameworks, and tunable functionalities. The samples were characterized with powder x-ray diffraction (PXRD), fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), nitrogen adsorption and desorption isotherms (BET) analysis, thermogravimetric analysis (TGA), transmission electron microscopy (TEM) and x-ray photoelectron spectroscopy (XPS). The MOF containing NH2 groups have high capacity for catalytic reaction. In this work, UiO-66-NH2 was used for post-synthesis by melamine and ethylamine to provide higher content of primary amine for Knoevenagel reaction. The modified MOFs were characterized with powder x-ray diffraction (PXRD), Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), scanning electron microscopy (SEM), N2 adsorption-desorption isotherms (BET), thermogravimetric analysis (TGA), and x-ray photoelectron spectroscopy (XPS). The effective parameters in Knoevenagel reaction such as catalyst type and amount, and solvent type were investigated. The modified MOFs exhibited excellent catalyst activities in heterogeneous phase due to their large surface area and porosity, gigh number of active sites (-NH2) on the structures. The catalyst could be recyclable and reusable without losing its framework integrity and catalytic activity.

  Metal-organic frameworks or coordination polymers or MOFs are the latest class of ordered porous solids. Since their discovery many potential applications have been proposed in strategic domains such as catalysis, separation, magnetism or others. One of their key advantages compared to their organic (carbons) or inorganic counterparts (zeolites, silica), is the possibility to easily tune their composition through a change of the metal and/or the organic linker. Compared to zeolites, in addition to a wider chemical versatility, MOF structures exhibit a larger panel of pore sizes and shapes (tunnels, cages, etc), with sometimes a flexible porosity which allows to reversibly adapt the pore size to the adsorbate. Functionalization of the organic linker represents another advantage of MOFs with the possibility of grafting during or after the synthesis various organic functionalities (polar, apolar), changing thus the physicochemical properties of the solid. One of the major potential applications for MOFs is in drug delivery, considering their host–guest properties and facile modification via chemical synthesis. In this work, We have made three types of metal-organic frameworks based copper cationic structures, whose methods of making them have been based on ultrasonic, mechanical, and ultrasonic magnetic methods (U-CuBTC, S-CuBTC and M-CuBTC). In the third method, we were able to construct a completely new metal organic structure called M-CuBTC. The purpose of this thesis is to examine the framework including copper nuclei, in absorbing and liberating acriflavine. Acriflavine is one of the most interesting biological compounds used to treat bacterial, fungal or parasitic infections and infections in aquarium fish. In addition to bacteriostatic and antibacterial properties, it has antiviral ability against some viruses, binds DNA and RNA, and changes their physical form. Also, acriflavine Hydrochloride is known and used as an organic color. Magnetic nanoparticles are one of the most important and widely used types of nanomaterials, with their unique properties that make them more specific to other nanostructures. These particles can be used in different branches. Their role is particularly significant in the field of drug delivery and also as a catalyst for various reactions, since these materials are easily separated from the reaction solution by a magnet. It also facilitates targeting, which is essential for drug delivery.

  In this research the three-dimensional Zr-based metal-organic framework UiO-66-NH2 was functionalized with melamine (UiO-66-NH2-Mlm), then copper (II) acetate monohydrate successfully anchored by the surface of the amino-functionalized Zr-MOF. Copper ions were reduced with sodium borohydride to obtain nanoparticles of copper oxide, then catalyst exhibited excellent activity for Ullman reaction. Furthermore, the catalyst showed a good performance. The sample were characterized with powder x-ray diffraction (PXRD), Fourier transform infrared spectroscopy (FTIR), Thermogravimetric analysis (TGA), Scanning electron microscopy (SEM), Scanning transmission electron microscopy (STEM), X-ray Photoelectron Spectroscopy (XPS), and Atomic Absorption spectroscopy (AA).

Metal organic frameworks (MOFs) also known as porous coordination polymers (PCPs) have attracted the attention of chemists, physicists, and materials scientists because of interest in the creation of nanometer-sized spaces and the novel phenomena in them. There is also interest in their application in adsorption. MOFs are typically constructed by connecting secondary building units (SBUs) consist of metal ions with organic connectors to produce various networks. Due to PXRD atterns Adsorb and desorb of Crystal violet into UiO-66 doesn’t any effect on structure. UiO-66 was stable during the absorption and desorption process and can be considered as a reversible adsorbents. The encapsulating of Crystal violet molecules within UiO-66(Zr-MOF) have been carried out successfully with high speed rather those of other MOFs have reported before. It can be seen this MOF used for this work have the comparable capacity between other MOFs, that have been proved by TGA, UV-vis analysis and weighing. The maximum adsorption capacity was 37.77 mg g-1 per 0.1 g of UiO-66. Considering releasing process for UiO-66, it has been ascertained that UiO-66 has good releasing rate, it may be depend on the size of the guest molecule and absorbent pore size.

  Metal–organic frameworks (MOFs) are an intriguing class of hybrid materials, that are built by assembling metal centres with organic linkers. the bonding between the inorganic and organic parts may be covalent, coordinative or based on van-der-Waals interactions, the so-called Metal-Organic-Frameworks (MOFs) or coordination polymers. MOFs are synthesized from solution under solvothermal conditio   typical solvents are water, ethanol, methanol, dimethylformamide (DMF) or acetonitrile. In this research adsorption and desorption of the drug phenazopyridine hydrochloride (PAP), its structural affects and kinetic surveys using three Zr-MOFs have studied. Absorption and desorption of these guests in highly stable three-dimensionlal (3D) porous coordination polymers UiO-66, UiO-66-NH2 and UiO-66-vac was investigated. The samples were characterized with powder X-ray diffraction (PXRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), Nitrogen sorption (BET) analysis, thermogravimetric analysis (TGA), and UV–vis spectroscopy. The delivery of drugs from MOFs performed in ethanol at room temperature under continuous stirring was determined by PXRD, UV-vis spectroscopy and FT-IR spectrums. The delivery of drugs in ethanol increases with time, it indicates that the drugs release are governed by the host-guest interaction. Similar behaviors were also observed in the desorption of all guests from all three MOFs. study of experimental results on phenazopyridine hydrochloride adsorption affinity in comparison with quantum results , to complete the relationship between theory and practical experience in the analysis of the results

  Abstract   Metal-organic frameworks (MOFs) also known as porous coordination polymers (PCPs) have attracted the attention of chemists, physicists, and materials scientists because of interest in the creation of nanometer-sized spaces and the novel phenomena in them. There is also interest in their application in adsorption, separation, catalysis, magnetism, sensing, and drug delivery. MOFs are typically constructed by connecting secondary building units (SBUs) consist of metal ions with organic connectors to produce various networks. They are completely regular, have high porosity, highly designable frameworks, and tunable functionalities. These properties make MOFs suitable for various application especially in trap and adsorption affinities for dangerous material. In this research absorption and desorption of iodine molecules and their structural affects using three Zr-MOFs have studied. Absorption and desorption of these guests in highly stable three-dimensionlal (3D) porous coordination polymers UiO-66 (Zr-bdc=1, 4-benzenedicarboxylate), UiO-66-NH2 (Zr-NH2-bdc=2-amino-benzenedicarboxylic acid) and UiO-66-vac (UiO-66 with defects) was investigated. The samples were characterized with powder x-ray diffraction (PXRD), fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), nitrogen adsorption and desorption isotherms (BET) analysis, thermogravimetric analysis (TGA), UV–vis spectroscopy, transmission electron microscopy (TEM) and x-ray photoelectron spectroscopy (XPS).The MOF containing NH2 groups have high capacity for iodine capture because of having high porosity, creating charge-transfer complexes between NH2 and I2 molecules. It has also higher iodine adsorption rate more than two other MOFs.The TEM image after iodine incorporated into MOFs has shown some differences on the morphology of particles proving iodine adsorption either on surface or into pores of MOF.The amounts of guest adsorbed into these Zr-MOFs had comparable and the sorption rate, especially for UiO-66-NH2 had higher than those previously reported. In addition, the UiO-66 MOF has shown the lowest amount of iodine sorption which can be reffered to its lower surface area, having no defects in its structure and Shortage of functional groups proportion to Uio-66-NH2.It particularly have demonstrated the quick sorption process of I2 in diluted n-hexane in Zr-based MOFs, and the influence of porosity and functionalization to maximize the loading capacity.AbstractMetal organic frameworks (MOFs) also known as porous coordination polymers (PCPs) have attracted the attention of chemists, physicists, and materials scientists because of interest in the creation of nanometer-sized spaces and the novel phenomena in them. There is also interest in their application in adsorption, separation, catalysis, magnetism, sensing and drug delivery. MOFs are typically constructed by connecting secondary building units (SBUs) consist of metal ions with organic connectors to produce various networks. They are completely regular, have high porosity, highly designable frameworks and tunable functionalities. These properties make MOFs suitable for various application especially in trap and adsorption affinities for dangerous material. In this research absorption and desorption of iodine molecules, their structural affects and kinetic surveys using three Zr-MOFs have studied. Absorption and desorption of these guests in highly stable three-dimensionlal (3D) porous coordination polymers UiO-66, UiO-66-NH2

Synthesis of nanoscale metal-organic frameworks containing copper metal centers and study of host structure effect on absorption and desorption towards against the drug phenazopyridine hydrochlorideand waste paint containing methyl red, methylene blue and crystal violet