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D. Nematollahi - One of the best experts on this subject based on the ideXlab platform.

  • Green Electrochemical Synthesis of silver sulfadiazine microcrystals
    RSC Advances, 2019
    Co-Authors: Faezeh Zivari Moshfegh, Mahmood Masoudi Khoram, D. Nematollahi
    Abstract:

    Electrochemical Synthesis of silver sulfadiazine (AgSD) microcrystals was carried out galvanostatically in a special two-electrode cell equipped with a sacrificial silver rod anode and a stainless steel plate cathode. The cell used in this work consists of a small cylindrical chamber containing aqueous sulfadiazine/sodium nitrate as the anode compartment inside a larger cylindrical chamber containing nitric acid solution as the cathode compartment. The ionic connection of two chambers is carried out through a solvent surface layer. In this study, the effect of the experimental parameters such as applied current density and sodium nitrate concentration as well as nitric acid concentration on the yield and energy consumption of AgSD is discussed. The proposed method is fast and green and has unique features including Synthesis in a single step, and no need for a metal salt.

  • Electrochemical Synthesis of diverse sulfonamide derivatives depending on the potential electrode and their antimicrobial activity evaluation
    New Journal of Chemistry, 2017
    Co-Authors: Fahimeh Varmaghani, D. Nematollahi, Maryam Hassan, Shadpour Mallakpour
    Abstract:

    Electrochemical Synthesis of two different series of sulfonamides was performed using the same precursors, 4-(4-nitrophenyl)urazole and arylsulfinic acids, by controlling the potential during electrolysis.

  • A non-covalent complex based on catechol–benzoxazole moieties: Electrochemical Synthesis and characterization
    RSC Adv., 2014
    Co-Authors: Hamid Salehzadeh, D. Nematollahi
    Abstract:

    Electrochemical Synthesis of a novel non-covalent complex was carried out via the electrooxidation of 3,5-di-tert-butylcatechol in the presence of 2-methoxybenzylamine.

  • Electro-inorganic Synthesis: a convergent paired Electrochemical Synthesis and voltammetric studies of copper(II)-2-aminophenol derivatives
    Journal of the Iranian Chemical Society, 2012
    Co-Authors: D. Nematollahi, Fatemeh Gomar
    Abstract:

    Electrochemical reduction of 2-nitrophenol and 5-methyl-2-nitrophenol has been studied in water/ethanol mixture using cyclic voltammetry and controlled-potential coulometry. Our voltammetric data indicate the formation of 2-aminophenol (HLI) and 5-methyl-2-aminophenol (HLII), respectively. Also, the Electrochemical Synthesis of copper(II) complex of 2-aminophenols has been carried out using copper metal as a sacrificial anode and lead metal as a cathode in water/ethanol (50/50 v/v). The Electrochemical Synthesis of copper(II)-2-aminophenols consists of a multi-step such as (a) cathodic reduction of 2-nitrophenols to related 2-aminophenols, (b) generation of Cu2+ from copper anode, (c) complexation of 2-aminophenols with Cu2+. In this work, we have proposed a mechanism for the electrode process. Some parameters such as electrode material, current density, electricity passed and temperature, were also systematically studied. The convergent paired Electrochemical Synthesis of copper(II) complex of 2-aminophenols has been successfully performed in a one-pot process, under constant current condition in an undivided cell, in a good yield and purity. Also, the Electrochemical behavior of copper(II)-2-aminophenol complex was studied and the stability constant of copper(I)-2-aminophenol complex was evaluated using cyclic voltammetry.

  • Electrochemical Synthesis of new coumarin derivatives of potential biological significance
    Journal of Electroanalytical Chemistry, 2012
    Co-Authors: Amene Amani, D. Nematollahi
    Abstract:

    Abstract Electrochemical Synthesis of some new coumarin derivatives was carried out via the Electrochemical oxidation of 1-(4-(4-hydroxyphenyl)piperazin-1-yl)ethanone ( 1 ) in the presence of 4-hydroxycoumarin and 4-hydroxy-6-methylcoumarin ( 2a,b ). The results show that, electrogenerated p -quinone imine, participated in Michael type reaction with 2a,b and after hydrolysis reaction is converted to the corresponding coumarin derivatives. This method provides a one-pot procedure for the Synthesis of new coumarin derivatives of potential biological significance.

Dominique Guyomard - One of the best experts on this subject based on the ideXlab platform.

  • Electrochemical Synthesis of new substituted manganese oxides for lithium battery applications
    Journal of Power Sources, 2006
    Co-Authors: E. Machefaux, Alain Verbaere, Dominique Guyomard
    Abstract:

    International audienceNew Co- and Al-substituted manganese dioxide materials have been prepared by Electrochemical Synthesis under hydrothermal conditions. The hollandite (α), pyrolusite (β) and γ structures can be stabilized using different experimental conditions. For each structure, the substitution leads to nanostructured compounds with various morphologies made of nanosized crystals and to much larger surface areas. Some substituted compounds display larger reversible Li insertion capacities than their non-substituted parents compounds

  • Electrochemical Synthesis of new substituted manganese oxides for lithium battery applications
    Journal of Power Sources, 2006
    Co-Authors: E. Machefaux, Alain Verbaere, Dominique Guyomard
    Abstract:

    New Co- and Al-substituted manganese dioxide materials have been prepared by Electrochemical Synthesis under hydrothermal conditions. The hollandite (α), pyrolusite (β) and γ structures can be stabilized using different experimental conditions. For each structure, the substitution leads to nanostructured compounds with various morphologies made of nanosized crystals and to much larger surface areas. Some substituted compounds display larger reversible Li insertion capacities than their non-substituted parents compounds.

Yi Zhang - One of the best experts on this subject based on the ideXlab platform.

  • Variation of cell voltage with reaction time in Electrochemical Synthesis process of sodium dichromate
    Chemical Engineering & Technology, 2006
    Co-Authors: Fu'an Wang, Yi Zhang
    Abstract:

    To address the problems existing in the traditional production technique of sodium dichromate, a new green technology of producing sodium dichromate with an Electrochemical Synthesis method was studied. Using a self-made electroSynthesis reactor of pure titanium and stainless steel, with a multiple-unit metal oxides combination anode, a cathode of stainless steel, and a reinforcing combination cation exchange membrane with perfluorosulfonic and perfluorocarboxylic polymers, experiments were carried out on the direct Electrochemical Synthesis of sodium dichromate from sodium chromate. From the experimental results and Electrochemical reaction principles, it was shown that the Electrochemical Synthesis reaction process of sodium dichromate may be quantitatively determined from the variation of the cell voltage measured macroscopically with reaction time. Cell voltages were experimentally measured at different initial sodium chromate concentrations in the anolyte, and the dependence of the cell voltage on reaction time was discussed. The mathematical model of the variation of cell voltage with reaction time and the change rate equation of cell voltage were established, and satisfactorily formulated the change law of cell voltage in the Electrochemical Synthesis process of sodium dichromate.

E. Machefaux - One of the best experts on this subject based on the ideXlab platform.

  • Electrochemical Synthesis of new substituted manganese oxides for lithium battery applications
    Journal of Power Sources, 2006
    Co-Authors: E. Machefaux, Alain Verbaere, Dominique Guyomard
    Abstract:

    International audienceNew Co- and Al-substituted manganese dioxide materials have been prepared by Electrochemical Synthesis under hydrothermal conditions. The hollandite (α), pyrolusite (β) and γ structures can be stabilized using different experimental conditions. For each structure, the substitution leads to nanostructured compounds with various morphologies made of nanosized crystals and to much larger surface areas. Some substituted compounds display larger reversible Li insertion capacities than their non-substituted parents compounds

  • Electrochemical Synthesis of new substituted manganese oxides for lithium battery applications
    Journal of Power Sources, 2006
    Co-Authors: E. Machefaux, Alain Verbaere, Dominique Guyomard
    Abstract:

    New Co- and Al-substituted manganese dioxide materials have been prepared by Electrochemical Synthesis under hydrothermal conditions. The hollandite (α), pyrolusite (β) and γ structures can be stabilized using different experimental conditions. For each structure, the substitution leads to nanostructured compounds with various morphologies made of nanosized crystals and to much larger surface areas. Some substituted compounds display larger reversible Li insertion capacities than their non-substituted parents compounds.

Kyoung-shin Choi - One of the best experts on this subject based on the ideXlab platform.

  • Electrochemical Synthesis of Photoelectrodes and Catalysts for Use in Solar Water Splitting
    Chemical reviews, 2015
    Co-Authors: Donghyeon Kang, Tae Woo Kim, Stephen R. Kubota, Allison C. Cardiel, Hyun Gil Cha, Kyoung-shin Choi
    Abstract:

    This review focuses on introducing and explaining electrodepostion mechanisms and electrodeposition-based Synthesis strategies used for the production of catalysts and semiconductor electrodes for use in water-splitting photoElectrochemical cells (PECs). It is composed of three main sections: Electrochemical Synthesis of hydrogen evolution catalysts, oxygen evolution catalysts, and semiconductor electrodes. The semiconductor section is divided into two parts: photoanodes and photocathodes. Photoanodes include n-type semiconductor electrodes that can perform water oxidation to O2 using photogenerated holes, while photocathodes include p-type semiconductor electrodes that can reduce water to H2 using photoexcited electrons. For each material type, deposition mechanisms were reviewed first followed by a brief discussion on its properties relevant to Electrochemical and photoElectrochemical water splitting. Electrodeposition or Electrochemical Synthesis is an ideal method to produce individual components and ...