Regioselective Electrochemical Oxidation of One of the Identical Benzene Rings of Carbazole to 1,4-Quinone on the MWCNT Surface and Its Electrocatalytic Activity

2019 ◽  
Vol 123 (50) ◽  
pp. 30283-30293 ◽  
Author(s):  
Prakasam Gayathri ◽  
K. Chandrasekara Pillai ◽  
Annamalai Senthil Kumar
Keyword(s):  
Electrochemical Oxidation ◽  
Electrocatalytic Activity ◽  
Mwcnt Surface ◽  
Benzene Rings

scholarly journals Modified lead dioxide for organic wastewater treatment: Physicochemical properties and electrocatalytic activity

2019 ◽  
Vol 84 (2) ◽  
pp. 187-198 ◽  
Author(s):  
Olesia Shmychkova ◽  
Tatiana Luk’yanenko ◽  
Larisa Dmirtikova ◽  
Alexander Velichenko
Keyword(s):  
Wastewater Treatment ◽  
Physicochemical Properties ◽  
Electrochemical Oxidation ◽  
Oxygen Evolution ◽  
Electrocatalytic Activity ◽  
Lead Dioxide ◽  
Chemical Properties ◽  
Destruction Rate ◽  
Physico Chemical ◽  
Pbo2 Anode

An investigation is reported on lead dioxide electrodeposition from methanesulfonate electrolytes additionally containing Ni2+ ions. It is shown that lead dioxide electrodes micromodified by nickel have different physico-chemical properties vs. nonmodified PbO2-anodes that are formed during the deposition. Electrocatalytical reactivity of electrodes involved in comparison to both the oxygen evolution, as well as to the electrooxidation of 2,4- dichlorophenoxyacetic (2,4-D) acid is investigated. Processes of electrochemical oxidation of 2,4-D on various materials occur qualitatively with the same mechanism and differ only in the rate. It is shown that the Ni-PbO2-anode possesses the highest electrocatalytic activity: the destruction rate of 2,4-D on it increases in 1.5 times in comparison with nonmodified lead dioxide. The COD of a 0.4 mM solution of 2,4-D, determined by the dichromate method, is 90.0 mg dm-3 which is 94 % of the theoretical value.

scholarly journals Understanding the effect of the high hydrophobicity of the laser-prepared Ti/SnO2-Sb-La2O3 anode on its electrocatalytic properties

2021 ◽  
Author(s):  
Géssica de Oliveria Santiago Santos ◽  
Aline Dória ◽  
Caio Vinícius da Silva Almeida ◽  
Marilia Pupo ◽  
Ronaldo Santos da Silva ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Electrochemical Oxidation ◽  
Electrocatalytic Activity ◽  
Electrocatalytic Properties

SnO2-based materials have attracted much attention in the electrochemical oxidation field due to their high electrocatalytic activity. However, efforts are still required to improve its physical and electrochemical properties. Here...

Enhanced electrochemical oxidation of phenol using a hydrophobic TiO2-NTs/SnO2-Sb-PTFE electrode prepared by pulse electrodeposition

RSC Advances ◽  
2015 ◽  
Vol 5 (41) ◽  
pp. 32245-32255 ◽  
Author(s):  
Weiyi Wu ◽  
Zhao-Hong Huang ◽  
Teik-Thye Lim
Keyword(s):  
Electrochemical Oxidation ◽  
Oxygen Evolution ◽  
Electrocatalytic Activity ◽  
Surface Hydrophobicity ◽  
Pulse Electrodeposition ◽  
Oxidation Of Phenol ◽  
Tio2 Nts

Novel TiO2-NTs/SnO2-Sb-PTFE electrodes were fabricated by pulse electrodeposition with higher oxygen evolution potential, improved surface hydrophobicity and enhanced electrocatalytic activity.

Electrochemical oxidation of estrogens as a method for CYP19A1 (aromatase) electrocatalytic activity determination

2020 ◽  
Vol 333 ◽  
pp. 135539
Author(s):  
Alexey V. Kuzikov ◽  
Rami A. Masamrekh ◽  
Tatiana A. Filippova ◽  
Yaraslau I. Haurychenka ◽  
Andrei A. Gilep ◽  
...  
Keyword(s):  
Electrochemical Oxidation ◽  
Electrocatalytic Activity ◽  
Activity Determination

Enhanced Electrocatalytic Activity of Ni-B-Graphene Electrode for Direct Methanol Fuel Cell Applications

2012 ◽  
Vol 608-609 ◽  
pp. 929-933
Author(s):  
Yuxi Cai ◽  
Yong Jiang Hou ◽  
Jie Guo
Keyword(s):  
Electrochemical Oxidation ◽  
Electrocatalytic Activity ◽  
Structural Effect ◽  
Cyclic Voltammograms ◽  
High Catalytic Activity ◽  
Oxidation Activity ◽  
Graphene Electrode ◽  
Oxidation Of Methanol ◽  
Direct Methanol ◽  
Methanol Fuel Cell

Ni-B-graphene catalysts with high catalytic activity towards the electrochemical oxidation of methanol in alkaline solution have been prepared. Cyclic voltammograms of methanol oxidation shows, the Ni-B-graphene electrode exhibited much higher electrocatalytic activity than the Ni-B/C electrode obtained via direct deposited Ni onto the surface of the graphite. The higher activity could be due to the structural effect of graphene. The graphene can not only make an electroless deposition stable, but also facilitate the formation of more efficient Ni hydroxides and metallic Ni on the electrode surface, which is the key to improving the electrochemical oxidation activity.

A crystalline–amorphous Ni–Ni(OH)2 core–shell catalyst for the alkaline hydrogen evolution reaction

2020 ◽  
Vol 8 (44) ◽  
pp. 23323-23329
Author(s):  
Jing Hu ◽  
Siwei Li ◽  
Yuzhi Li ◽  
Jing Wang ◽  
Yunchen Du ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Core Shell ◽  
Alkaline Conditions

Crystalline–amorphous Ni–Ni(OH)2 core–shell assembled nanosheets exhibit outstanding electrocatalytic activity and stability for hydrogen evolution under alkaline conditions.

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