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Ehsan Nazarzadeh-Zare

Assistant Professor of Polymer Chemistry

Teaching

  • Synthesis of Nanostructures (M.Sc)
  • General Organic Chemistry
  • General Chemistry I
  • Organic Chemistry I
  • Principles of Polymer Chemistry
  • Synthesis of Polymers
  • Advanced Methods for Synthesis of Polymer
  • Principles of Degradation
  • Polymer Analysis
  • Natural Polymers
  • Polymer Technology
  • Laboratory Safety Guidance
  • Chemical and biological contaminants

Selected Publications

Zare, E.N., Lakouraj, M.M., Ashna, A. Synthesis of conductive poly (3-aminobenzoic acid) nanostructures with different shapes in acidic ionic liquids medium (2018) 271, pp. 514-521.

DOI: 10.1016/j.molliq.2018.09.028

A series of acidic ionic liquid (ILs) based on imidazole and pyridine were synthesized and fully characterized by using FTIR, 1H and 13C NMR techniques. The acidic ILs applied as solvent and dopant for polymerization of 3-aminobenzoic acid (3ABA) by using of ammonium persulfate as an initiator. The synthesized P3ABAs-acidic ILs were characterized by FTIR, XRD, SEM, UV-Visible and TG-DTG analysis. The electrical conductivity of P3ABAs samples was measured by four probe method. The P3ABA-[PyCAA][HSO4] (0.30 S/cm) exhibited a higher electrical conductivity than that of the P3ABA-[HPy]HSO4] (0.28 S/cm), P3ABA-[IMBS][Cl] (0.22 S/cm) and bare P3ABA (0.20 S/cm). Based on the SEM micrographs, the acidic ILs changed the morphology of the P3ABA from being completely granular. The XRD patterns of the P3ABAs-acidic ILs samples displayed a more crystalline nature than that of bare P3ABA. The solubility and viscosity of P3ABAs-acidic ILs in polar organic solvents were greater than in bare P3ABA. Moreover, absorption (UV-vis) properties of the synthesized P3ABAs in the presence and absence of acidic ILs were examined. Based on TG-DTG curves, the thermal stability of the P3ABAs-acidic ILs was improved relative to bare P3ABA. The results showed that acidic ILs species form soft templates which assembled 3ABA molecules into specific nanostructures. © 2018 Elsevier B.V.

AUTHOR KEYWORDS: Acidic ionic liquids; Conductive poly (3-aminobenzoic acid); Different shape; Nanostructure; Synthesis
INDEX KEYWORDS: Ammonium persulfate; Electric conductivity; Nanostructures; Synthesis (chemical); Thermodynamic stability; X ray diffraction, Acidic ionic liquids; Conductive poly (3-aminobenzoic acid); Crystalline nature; Different shapes; Electrical conductivity; Four-probe methods; Polar organic solvents; SEM micrographs, Ionic liquids
PUBLISHER: Elsevier B.V.


Zare, E.N., Lakouraj, M.M., Kasirian, N. Development of effective nano-biosorbent based on poly m-phenylenediamine grafted dextrin for removal of Pb (II) and methylene blue from water (2018) 201, pp. 539-548.

DOI: 10.1016/j.carbpol.2018.08.091

Novel nano-biosorbent was successfully prepared based on dextrin-g-poly m-phenylenediamine (DgPmPDA) and graphene oxide (GO) by using the solution blending technique and was found to be an effective adsorbent for Pb(II) and methylene blue (MB) dye. The nano-biosorbent was characterized by FTIR, CHN, XRD, SEM, AFM and TGA. The adsorption process depended on the pH of solution, adsorbent dosage, contact time, initial concentration of Pb(II) and MB, and temperature. Experimental results were in good agreement with Langmuir isotherm model for both Pb(II) and MB adsorption. The maximum adsorption capacity (Qmax) of Pb(II) and MB was found to be 80 mg/g and 76.33 mg/g, respectively, at optimum conditions. Results showed that the kinetics of Pb(II) and MB onto the DgPmPDA@GO nano-biosorbent followed the pseudo-first-order and pseudo-second-order models, respectively. Thermodynamic parameters exhibited the endothermic and spontaneous nature of the sorption process. A possible mechanism of adsorption was suggested where π–π stacking interactions, H-bonding interaction and electrostatic attraction controlled the MB adsorption and chelation and electrostatic attraction controlled the Pb(II) adsorption. © 2018 Elsevier Ltd

AUTHOR KEYWORDS: Grafted dextrin; Graphene oxide; Nano-biosorbent; Pb (II) and methylene blue; Polym-phenylenediamine
INDEX KEYWORDS: Adsorption; Aromatic compounds; Blending; Dyes; Electrostatics; Grafting (chemical); Graphene; Graphene oxide; Isotherms; Lead removal (water treatment), Biosorbents; Electrostatic attractions; Grafted dextrin; Langmuir isotherm models; Methylene Blue; Phenylenediamines; Pseudo-second order model; Thermodynamic parameter, Lead compounds
PUBLISHER: Elsevier Ltd


Zare, E.N., Abdollahi, T., Motahari, A. Effect of functionalization of iron oxide nanoparticles on the physical properties of poly (aniline-co-pyrrole) based nanocomposites: Experimental and theoretical studies (2018) . Article in Press.

DOI: 10.1016/j.arabjc.2018.04.016

Poly(aniline-co-pyrrole)@functionalized Fe3O4 (PACP@f-Fe3O4) nanocomposites were prepared by a two-step method. In the first step, the Fe3O4-OH and Fe3O4-NH2 nanoparticles were synthesized by the solvothermal and co-precipitation techniques, respectively. In the second step, the PACP@f-Fe3O4 nanocomposites were synthesized by an in-situ microemulsion polymerization technique. The synthesized materials were characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). Based on the SEM, the iron oxide changed the morphology of the PACP copolymer from being completely nanospheres. The TGA showed the higher thermal stability of the PACP@Fe3O4-OH nanocomposite in comparison to the PACP@Fe3O4-NH2, and the density functional theory (DFT) successfully confirmed this fact by calculating the binding energies between the PACP copolymer and functionalized nanoparticles. Also, the HOMO − LUMO energy gap (Eg) values were determined by the DFT to investigate the electrical conductivities, which are in accord with the experimental electrical conductivities in the order PACP@Fe3O4-OH > PACP@Fe3O4-NH2 > PACP. © 2018 King Saud University

AUTHOR KEYWORDS: Density functional theory; Electrical conductivity; Functionalized Fe3O4; Nanocomposite; Poly(aniline-co-pyrrole)
INDEX KEYWORDS: Aniline; Aromatic compounds; Binding energy; Density functional theory; Electric conductivity; Fourier transform infrared spectroscopy; Magnetite; Microemulsions; Nanocomposites; Nanoparticles; Precipitation (chemical); Scanning electron microscopy; Synthesis (chemical); Thermodynamic stability; Thermogravimetric analysis; X ray diffraction, Electrical conductivity; Functionalizations; Functionalized; Functionalized nanoparticles; Iron oxide nanoparticle; Microemulsion polymerization; Poly(aniline-co-pyrrole); Synthesized materials, Iron oxides
PUBLISHER: Elsevier B.V.

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