Electrochemical Reduction Process of Sb(III) on Au Electrode Investigated by CV and EIS

2009 ◽  
Vol 156 (3) ◽  
pp. D84 ◽  
Author(s):  
Fei-Hui Li ◽  
Wei Wang ◽  
Jian-Ping Gao ◽  
Shuang-Yuan Wang
Keyword(s):  
Electrochemical Reduction ◽  
Reduction Process ◽  
Au Electrode

Performance of poly-o-phenylenediamine and its carbon dot composite electrode in the removal of Cu2+ from its aqueous solution

2021 ◽  
pp. 2151037
Author(s):  
Yu Meng ◽  
Qing Zhong ◽  
Arzugul Muslim
Keyword(s):  
Aqueous Solution ◽  
Electrochemical Reduction ◽  
Composite Electrode ◽  
Reduction Process ◽  
Order Kinetic ◽  
Carbon Dot ◽  
First Order ◽  
Oxidation Reduction ◽  
Order Kinetic Model ◽  
Optimal Ph

Because −NH2 and −NH− in poly-[Formula: see text]-phenylenediamine (P[Formula: see text]PD) can interact strongly with the empty orbitals of Cu to show unique electrochemical activity, P[Formula: see text]PD is suitable for the removal of Cu[Formula: see text] by electrochemical oxidation–reduction process. In this study, with P[Formula: see text]PD and its carbon dot composite (CDs/P[Formula: see text]PD) as working electrodes, the electrochemical reduction and removal of Cu[Formula: see text] in the aqueous solution were carried out with the potentiostatic method. According to effects of voltage, pH of the solution, initial concentration of Cu[Formula: see text], and electrochemical reduction time on the Cu[Formula: see text] removal, the Cu[Formula: see text] removal ratios of P[Formula: see text]PD and CDs/P[Formula: see text]PD were up to 64.69% and 73.34%, respectively, at −0.2 V and the optimal pH. Additionally, results showed that these processes were in line with the quasi-first order kinetic model. Both P[Formula: see text]PD and CDs/P[Formula: see text]PD showed good reproducibility in six cycles. After five times of repeated usage, the regeneration efficiencies of P[Formula: see text]PD and CDs/P[Formula: see text]PD dropped to 77.04% and 79.36%, respectively.

scholarly journals The Electrochemical Reduction Mechanism of ZnFe2O4 in NaCl-CaCl2 Melts

Crystals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 925
Author(s):  
Chang Liu ◽  
Jinglong Liang ◽  
Hui Li ◽  
Hongyan Yan ◽  
Sijia Zheng ◽  
...  
Keyword(s):  
Electrochemical Reduction ◽  
Thermodynamic Analysis ◽  
Irreversible Process ◽  
Gradual Increase ◽  
Reduction Process ◽  
Reduction Mechanism ◽  
Reversible Process ◽  
Electrochemical Tests ◽  
Oxygen Ions ◽  
One Step

The electrochemical reduction process of ZnFe2O4 in NaCl-CaCl2 melts was studied. Thermodynamic analysis shows that the reduction process of ZnFe2O4 is carried out in multiple steps, and it is difficult to reduce Fe3+ to Fe in one step. Electrochemical tests revealed that the reduction process of ZnFe2O4 includes three steps: First, Fe3+ is reduced to Fe in two steps, then Zn2+ is reduced to Zn in one step. The reduction of Fe3+ on the Mo electrode is a reversible process controlled by diffusion, while the reduction of Zn2+ is an irreversible process controlled by diffusion. The influence of electrolysis voltage and temperature on the process of electric deoxidation has also been studied. It is indicated that properly increasing the temperature is conducive to the diffusion of oxygen ions, thereby increasing the deoxidation rate. With the gradual increase of voltage, the reduction process of ZnFe2O4 is ZnFe2O4 → FeO + ZnO → Fe + ZnO → Fe + Zn.

Cathode Preparation of Electrochemical Reduction Process of TiO2 to Titanium

2010 ◽  
Vol 39 (9) ◽  
pp. 1513-1518 ◽  
Author(s):  
Wang Bixia ◽  
Zhou Lian ◽  
Lan Xinzhe ◽  
Zhao Xicheng ◽  
Cui Jingtao
Keyword(s):  
Electrochemical Reduction ◽  
Reduction Process

A universal strategy for the facile synthesis of a sandwich-structured Pt–graphene–Pt nanocomposite for salbutamol sensing

2016 ◽  
Vol 40 (1) ◽  
pp. 302-309 ◽  
Author(s):  
Xiaofei Zhu ◽  
Xuemin Duan ◽  
Jingkun Xu ◽  
Limin Lu ◽  
Kaixin Zhang ◽  
...  
Keyword(s):  
Electrochemical Reduction ◽  
Reduction Process ◽  
Facile Synthesis ◽  
Step Method

A sandwich-structured Pt–graphene–Pt nanocomposite was prepared by a two step method includingin situgrowth and an electrochemical reduction process.

scholarly journals Electrochemical evidence of sulfinic acid derivative as an intermediate in the reduction of aromatic sulfonyl chloride in an aprotic medium

2005 ◽  
Vol 30 (3) ◽  
pp. 57-61 ◽  
Author(s):  
A. C .D. Angelo ◽  
S. M. A. Jorge ◽  
N. R. Stradiotto
Keyword(s):  
Electrochemical Reduction ◽  
Acid Derivative ◽  
Chemical Reactions ◽  
Sulfonyl Chloride ◽  
Reduction Process ◽  
Dmso Solution ◽  
Sulfinic Acid ◽  
Cyclic Voltammetric ◽  
Global Reduction

The electrochemical reduction of p-nitrobenzenesulfonyl chloride (NBSCl) in dimethylsulfoxide (DMSO) solution is used here as a model to investigate the role of sulfinic acid derivative in this compound's global reduction process. Cyclic voltammetric experiments reveal the production of sulfinic acid derivative, which is important in chemical reactions involving the original compound and other intermediates. This paper also discusses the probable mechanisms of the reduction.

Synthesis of Nano Metal Powder by Electrochemical Reduction of Iron Oxides

2007 ◽  
Vol 534-536 ◽  
pp. 137-140
Author(s):  
Ki Hun Seong ◽  
Jai Sung Lee
Keyword(s):  
Electrochemical Reduction ◽  
Applied Voltage ◽  
Room Temperature ◽  
Equilibrium Shape ◽  
Reduction Process ◽  
Particle Growth ◽  
Phase Evolution ◽  
Reduction Time ◽  
Powder Samples ◽  
Nano Metal Powder

Synthesis of iron nanopowder by room-temperature electrochemical reduction process of α-Fe2O3 nanopowder was investigated in terms of phase evolution and microstructure. As process variables, reduction time and applied voltage were changed in the range of 1~20 h and 30~40 V, respectively. From XRD analyses, it was found that volume of Fe phase increased with increasing reduction time and applied voltage, respectively. The crystallite size of Fe phase in all powder samples was less than 30 nm, implying that particle growth was inhibited by the reaction at room temperature. Based on the distinct equilibrium shape of crystalline particle, phase composition of nanoparticles was identified by TEM observation.

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