Studies of the electrochemical reduction processes of Bi3+, HTeO2+ and their mixtures

2009 ◽  
Vol 255 (16) ◽  
pp. 7394-7402 ◽  
Author(s):  
Fei-Hui Li ◽  
Fa-Long Jia ◽  
Wei Wang
Keyword(s):  
Electrochemical Reduction ◽  
Reduction Processes

Electroreduction of nitrogen to ammonia on nanoporous gold

Nanoscale ◽  
2021 ◽  
Author(s):  
Haibin Ma ◽  
Zhiwen Chen ◽  
Zhili Wang
Keyword(s):  
Electrochemical Reduction ◽  
Nanoporous Gold ◽  
Reduction Processes ◽  
Bosch Process

Electrochemical reduction of nitrogen (N2) to ammonia (NH3) has attracted attention as an emerging alternative to the traditional Haber-Bosch process to synthesize NH3. Unfortunately, currently electrocatalytic N2 reduction processes are...

scholarly journals Incorporation of Bi2O3 Residuals with Metallic Bi as High Performance Electrocatalyst toward Hydrogen Evolution Reaction

Catalysts ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1099
Author(s):  
Rahmad Syah ◽  
Awais Ahmad ◽  
Afshin Davarpanah ◽  
Marischa Elveny ◽  
Dadan Ramdan ◽  
...  
Keyword(s):  
Electrochemical Reduction ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
High Performance ◽  
Hydrogen Reduction ◽  
High Current Density ◽  
High Catalytic Activity ◽  
Ni Foam ◽  
Reduction Processes ◽  
3D Network

Nanostructured Bismuth-based materials are promising electrodes for highly efficient electrochemical reduction processes such as hydrogen evolution reaction (HER). In this work, a novel sort of nanocomposite made up of partially reduced Bi2O3 into metallic Bi anchored on a 3D network of Ni-foam as a high-performance catalyst for electrochemical hydrogen reduction. The application of the hybrid material for HER is shown. The high catalytic activity of the fabricated electrocatalyst arises from the co-operative effect of Bi/Bi2O3 and Ni-foam which provides a highly effective surface area combined with the highly porous structure of Ni-foam for efficient charge and mass transport. The advantages of the electrode for the electrochemical reduction processes such as high current density, low overpotential, and high stability of the electrode are revealed. An overall comparison of our as-prepared electrocatalyst with recently reported works on related work is done.

Electrodeposition of Iron from Kaolin Clay and the Effect of Mass Transport

2016 ◽  
Vol 19 (2) ◽  
pp. 103-107
Author(s):  
Flores-Segura Juan Carlos ◽  
Oumarou Savadogo ◽  
Kentaro Oishi ◽  
Víctor Esteban Reyes-Cruz ◽  
María Aurora Veloz-Rodríguez
Keyword(s):  
Electrochemical Reduction ◽  
Iron Reduction ◽  
Ultrasonic Method ◽  
Rotating Disk ◽  
Rotating Disk Electrode ◽  
Kaolin Clay ◽  
Potential Range ◽  
Electro Deposition ◽  
Reduction Processes ◽  
Working Electrode

The separation of iron from kaolin clay solutions using electro deposition was studied. Electrochemical studies of the iron electro-deposition were performed using the techniques of cyclic voltammetry, chronopotentiometry and chronoamperometry on a silver rotating disk electrode (RDE) as a working electrode. The effect of the kaolin solution pretreatment with ultrasonic method on the electrochemical reduction processes was studied. The influence of the disk speed of the electro-deposition performances was also studied. The morphology of the surface of the electro-deposit was observed by SEM. It was found that the ultrasonic pretreatment has an important effect on the reduction processes and on the morphology of the electrodeposited sample. The chemical composition of the electrode-posit was characterized by atomic absorption and ICP-ToFMS. It was shown that Fe2O3 content in the clay was 0.6% (weight). The voltammetric studies revealed that, during the electrochemical reduction processes of the kaolin solution, the iron reduction peaks were observed in the potential range from - 0.52V to -2.0V (E vs. SCE). Subsequently, the chronopotentiometry study showed that when a current of - 0.09A is applied to the electrochemical cell, the reduction of iron species occurred. It was also found that the variation of the amount of the electrodeposited iron is, of course, significantly dependent of the speed of the working electrode. For an electrode speed rate ranged from 1500 to 6500 rpm (revolutions per minute), an optimum amount of the electro deposited iron was obtained for an electrode speed of about 4000 rpm.

Activation of CO2by ionic liquid EMIM–BF4in the electrochemical system: a theoretical study

2015 ◽  
Vol 17 (36) ◽  
pp. 23521-23531 ◽  
Author(s):  
Yuanqing Wang ◽  
Makoto Hatakeyama ◽  
Koji Ogata ◽  
Masamitsu Wakabayashi ◽  
Fangming Jin ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Electrochemical Reduction ◽  
Theoretical Study ◽  
Electrochemical System ◽  
Faradaic Efficiency ◽  
Reduction Processes ◽  
System A ◽  
Low Overpotential

The electrochemical reduction of CO2to CO by an ionic liquid EMIM–BF4is one of the most promising CO2reduction processes proposed so far with its high Faradaic efficiency and low overpotential.

Electrochemical reduction processes in indigo dyeing

2008 ◽  
Vol 113 (4) ◽  
pp. 135-144 ◽  
Author(s):  
T. Bechtold ◽  
E. Burtscher ◽  
G. Kühnel ◽  
O. Bobleter
Keyword(s):  
Electrochemical Reduction ◽  
Reduction Processes ◽  
Indigo Dyeing
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