Hassan shayani-jam

Hassan shayani-jam
University of Zanjan · Department of Chemistry

Assistant Professor

About

46
Publications
4,794
Reads
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583
Citations
Citations since 2016
32 Research Items
395 Citations
2016201720182019202020212022020406080100
2016201720182019202020212022020406080100
2016201720182019202020212022020406080100
2016201720182019202020212022020406080100

Publications

Publications (46)
Article
Full-text available
Encapsulation of elemental sulfur inside of carbon nanotubes is one of the best solutions to face the Lithium–Sulfur batteries challenges to get successful commercialization. In this work, the first parametric study of the capillary drawing-in dissolved materials in low surface tension solvents accompanying ultrasonic method is reported which has l...
Article
Full-text available
Polymer inclusion membranes (PIMs) have received much attention as a greener method than other liquid membranes for the separation of a great number of chemical species. The expected horizon of industrial applications besides the advantages of greener characteristics of PIMs than other liquid membranes and solvent extraction methods, have resulted...
Article
Full-text available
A polymer inclusion membrane (PIM) composed of 50 wt% base polymer poly(vinylidenefluoride-co-hexafluoropropylene), 40 wt% extractant Aliquat® 336, and 10 wt% dibutyl phthalate as plasticizer/modifier provided the efficient extraction of vanadium(V) (ini-tial concentration 50 mg L−1) from 0.1 M sulfate solutions (pH 2.5). The average mass and thick...
Article
Full-text available
A polymer inclusion membrane (PIM) composed of 50 wt% base polymer poly(vinylidenefluoride-co-hexafluoropropylene), 40 wt% extractant Aliquat® 336, and 10 wt% dibutyl phthalate as plasticizer/modifier provided the efficient extraction of vanadium(V) (initial concentration 50 mg L−1) from 0.1 M sulfate solutions (pH 2.5). The average mass and thickn...
Article
The present paper describes the preparation of a novel composite included the phenobarbital imprinted polymer of aniline (PB-MIP-PANI) and the layered graphene oxide (GO). The process involved the precipitation-polymerization of the functional monomer by using ammonium persulfate as an initiator. FT-IR, TGA, EDX, and FE-SEM techniques were used for...
Preprint
A polymer inclusion membrane (PIM) composed of 50 wt% poly(vinylidenefluoride-co-hexafluoropropylene) (PVDF-HFP) as its base polymer, 40 wt% Aliquat® 336 as its extractant and 10 wt% dibutyl phthalate (DBP) as plasticizer provided efficient extraction of vanadium(V) from its sulfate solutions adjusted to pH 2.5. It was suggested that V(V) was extra...
Conference Paper
Full-text available
In this research, we decided to immobilized Mo and Mo/Au nanoparticles on cellulose-melamine formaldehyde support and investigate its catalytic activity on the Water Oxidation process. For this goal, we prepared two catalysts through wet chemical and calcination synthesis way, the difference of catalysts limited to kind of nanoparticles only. The a...
Article
A polymer inclusion membrane (PIM) prepared by casting a solution of cellulose triacetate (CTA), trioctylamine (TOA), and tri-n-butylphosphate (TBP), dissolved in dichloromethane was used for the extraction of bismuth(III) from hydrochloric acid solutions. The optimized PIM, in terms of mechanical properties and its efficiency for the extraction of...
Article
Full-text available
A key application of CUSTOM 450 alloy is in the construction of gas turbine compressor blades. The study of pitting corrosion can prevent the failure of many gas turbine compressor blades. In this study, a reflective digital holography microscopy method was employed to investigate the growth of pitting corrosion in depth. To this end, a constant po...
Article
Electrochemical oxidation of caffeic acid (1) has been studied in the presence of methyl and phenyl Meldrum's acids (3a–3b) as nucleophiles in water/acetonitrile (90/10) solutions using cyclic voltammetry and controlled-potential coulometry methods. The cyclic voltammetric results indicate that a one‐pot two‐step sequential reaction occurs between...
Article
In this work, the electrochemical oxidation of 4-phenylurazole (1) and 4-(4-aminophenyl) urazole (2) in the presence of some Meldrum’s acid derivatives as nucleophiles was studied. Some new urazole derivatives were synthesized in water–ethanol (70:30 v/v) solutions via anodic oxidation of the urazoles (1 and 2). Because the electrochemical oxidatio...
Article
The CUSTOM 450 gas turbine compressor blades are corroded in chlorine environments. The initiation and growth of pits and cracks lead to failure. In this paper, prediction of the pitting corrosion behavior of the alloy is studied. In this regard, in the laboratory section, two-point bending specimen is first subjected to different potentials in a 3...
Article
A Schiff base ligand named bis(5-bromo-2-hydroxybenzaldehyde) 1,2-propanediimine has been used to fabricate a modified glassy carbon electrode for the selective voltammetric detection of the low-level of Cu(II). The electrochemical behavior of unmodified and modified electrodes was investigated using the cyclic voltammetry technique, while the opti...
Article
Full-text available
Corrosive factors and mechanical load on the gas turbine compressor blades, cause phenomena such as pitting corrosion, stress corrosion cracking and corrosion fatigue. Due to erosion of particles in the presence of a corrosive environment, pitting happens and this is the source of subsequent cracks. Therefore, it is necessary to know its mechanism...
Article
The graphitic carbon nitride-graphene nanoplatelets (g-C3N4/GNP) composite was synthesized. Field Emission Scanning Electron Microscopy (FE-SEM), Energy Dispersive X-ray spectroscopy (EDS), Fourier Transform Infrared (FT-IR) spectroscopy, and X-Ray powder Diffraction (XRD) techniques were the techniques employed for the identifying the prepared nan...
Article
Full-text available
Poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) was used for the preparation of polymer inclusion membranes (PIMs) containing trihexyltetradecylphosphonium chloride (Cyphos® IL 101) or trioctylmethylammonium chloride (Aliquat® 336) for the removal of Cr(VI) from sulfate solutions. PIMs containing 50 wt% of Cyphos® IL 101 or Aliquat® 336...
Article
In the current study, the electrochemical oxidation of caffeic acid (CA) has been studied in the presence of 2-mercaptobenzoxazole (2) and 2-mercaptobenzimidazole (3). It is demonstrated that electrochemically produced o-benzoquinone is removed by 2 and 3 to give final products via an EC mechanism pathway. The ΔGtot of studied species calculated by...
Article
Full-text available
In this study, the electrochemical polarization tests were performed on tensioned and non-tensioned CUSTOM 450 specimens in a 3.5 wt% NaCl solution to investigate pitting potential and stable pit initiation time. A potentiodynamic test was conducted to determine the exact amount of pitting potentials. According to the potentiostatic tests, a relati...
Article
Self-cross linked poly(4,4′-diaminodiphenylmethane) was prepared by an oxidative polymerization. Also a molecular imprinted polymer was prepared by employing 4,4′-diaminodiphenylmethane as the functional monomer, ammonium persulfate and dibenzothiophene as the oxidizing agent and template, respectively. It is suggested that the π–π stacking effect...
Article
Self-cross linked poly (4.4′-methylenedianiline) as a conductive polymer was prepared via oxidative polymerization of 4.4′-methylenedianiline. Synthesis of poly 4.4′-methylenedianiline in acidic condition, leads to formation of phenazine structural units. Molecularly imprinted poly 4.4′-methylenedianiline, synthesized using 1-benzothiophene as temp...
Article
In this work, the novel Spiro cycles with high potential antibacterial activity were synthesized via a one-pot and environmentally friendly electrochemical approach, without toxic reagents and solvents. In the first, electrochemical oxidation of caffeic acid (1) in the presence of barbituric acids (3a-c) as nucleophiles have been studied using cycl...
Article
Electrochemical oxidation of 4,4′-biphenol has been studied in aqueous solution and acetone/water mixtures using cyclic voltammetry and chronocoulometry. Obtained results show that diffusion and adsorption currents are mixed (weak adsorption). Weak adsorption was studied and proven by various methods. Semi-integral analysis and chronocoulometry wer...
Article
In this research, electrochemical oxidation of acetaminophen was investigated in the presence of steroidal anti-inflammatory drugs diclofenac and piroxicam by cyclic voltammetry and controlled-potential coulometry techniques. The results indicated that N-acetyl-p-benzoquinone-imine (NAPQI), produced by electrooxidation of acetaminophen, reacts with...
Article
A diclofenac (DCF)-imprinted polymer, composed of polyaniline, reduced graphene oxide (rGO) and triphenylamine, as cross linker, was synthetized. This composite was identified by using SEM and FT-IR techniques. The prepared DCF-imprinted polymer (MIP) was used for modification of carbon paste electrodes (CPEs) to fabricate a selective DCF electroch...
Conference Paper
Full-text available
Poly(vinylidenefluoride-co-hexafluoropropylene), PVDF-HFP, was applied for preparation of polymer inclusion membranes (PIMs) [1] containing trioctylmethyl ammonium chloride (Aliquat ® 336) and trihexyltetradecylphosphonium chloride (Cyphos ® IL 101) as extractants. These PIMs were examined for removal of Cr(VI) from sulfate solutions. It was shown...
Article
An electrochemical sensor for the determination of p-nitrophenol (p-NP) was developed based on a molecularly imprinted polymer (MIP) on graphene oxide (GO). The sensor was prepared via precipitation polymerization of aniline and ammonium persulfate as the host molecule and initiator. The morphologies and electrochemical behavior of the imprinted se...
Article
Full-text available
This study concerns on the preparation of a novel Pb(II) ion-imprinted polymer (Pb(II)-IIP) based on the hyper-cross-linked polystyrene as porous support via precipitation polymerization of aniline, as functional monomers, and ammonium per sulfate, as the initiator. The prepared materials were characterized by Fourier transform infrared spectroscop...
Article
The electrochemical oxidation of some dihydroxybenzoic acids (DHBAs), 2,5-, 2,3-, and 3,4-dihydroxybenzoic acid, has been studied using cyclic voltammetry and chronocoulometry. It was found that the position of the carboxylic acid group on the phenyl ring is an effective factor in electrochemical oxidation of these molecules. The electrochemical ox...
Article
The electrochemical oxidation of some dihy- 9 droxybenzoic acids (DHBAs), 2,5-, 2,3-, and 3,4- dihydroxybenzoic acid, has been studied using cyclic voltammetry and chronocoulometry. It was found that the position of the carboxylic acid group on the phenyl ring is an effective factor in electrochemical oxidation of these molecules. The electrochemic...
Article
a b s t r a c t The electrochemical oxidation of 4,4 -biphenol was studied at a glassy carbon electrode in the presence of glutathione and N-acetylcysteine, using cyclic voltammetry as a diagnostic technique. The results indi-cate a complicated catalytic system. The catalytic current depends on the concentration of glutathione (or N-acetylcysteine)...
Article
Electrochemical oxidation of acetaminophen has been studied in the presence of glutathione and acetylcysteine. Our results indicate that N-acetyl-p-benzoquinone-imine (NAPQI) participates in a catalytic reaction with glutathione and N-acetylcysteine. Also, the observed homogeneous rate constants of the reaction of NAPQI with glutathione and acetylc...
Article
Electrochemical oxidation of catechols in the presence of phenyl-Meldrum's acid as a nucleophile in aqueous solution has been studied in detail by means of cyclic voltammetry and controlled potential coulometry. The results indicate that the o-benzoquinone derived from catechols participates in Michael addition reaction with phenyl-Meldrum's acid t...
Article
Electrochemical oxidation of acetaminophen (paracetamol) has been studied in various pHs using cyclic voltammetry and controlled-potential coulometry. The results indicate that electrochemically generated N-acetyl-p-benzoquinone-imine (NAPQI) participates in different type reactions based on solution's pH. It is hydrolyzed in strong acidic media an...
Article
Electrochemical oxidation of catechols has been studied in the presence of Meldrum's acid derivatives as nucleophiles in aqueous solution, by means of cyclic voltammetry and controlled-potential coulometry. Catechols in the Michael addition reaction react with Meldrum's acids to form adducts that can undergo electrooxidation. Such products were obt...
Article
Electrochemical oxidation of 3,5-di-tert-butylcatechol (1) has been studied in ethanol/water mixtures by means of cyclic voltammetry and controlled-potential coulometry. The results revealed that 3,5-di-tert-butyl-1,2-benenzoquinone (2) derived from oxidation of 3,5-di-tert-butylcatechol participate in noncovalently linked interactions with 1 conve...

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Projects

Projects (2)
Project
Separation and preconcentration of trace amounts of metals using polymer inclusion membranes processes which are running under the supervision of Prof. M. R. Yaftian ( Zanjan University) and Prof. S. D. Kolev (Melbourne University).