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.

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 PbO2 modified with TiO2-NTs composite materials with enhanced OER electrocatalytic activity for Zn electrowinning

RSC Advances ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 6146-6158
Author(s):  
Chen Chen ◽  
Xuanbing Wang ◽  
Ruidong Xu ◽  
Ying Zhang ◽  
Suyang Feng ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Composite Materials ◽  
Oxygen Evolution ◽  
Electrocatalytic Activity ◽  
High Energy ◽  
High Oxygen ◽  
Tio2 Nts ◽  
High Energy Consumption

The high oxygen evolution overpotential of the Pb–Ag anode is one of the main reasons for the high energy consumption in Zn electrowinning.

Hierarchically porous FeNi3@FeNi layered double hydroxide nanostructures: One-step fast electrodeposition and highly efficient electrocatalytic performances for overall water splitting

2021 ◽  
Author(s):  
Zihao Liu ◽  
Shifeng Li ◽  
Fangfang Wang ◽  
Mingxia Li ◽  
Yonghong Ni
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Hierarchically Porous ◽  
One Step ◽  
Double Hydroxide

FeNi-layered double hydroxide (LDH) is thought to be an excellent electrocatalyst for oxygen evolution reaction (OER), but it always shows extremely poor electrocatalytic activity toward hydrogen evolution reaction (HER) in...

Ce-doped Ni-S nanosheets on Ni foam supported NiMoO4 micropillars: Fast electrodeposition, improved electrocatalytic activity and ultralong durability for oxygen evolution reaction in various electrolytes

2021 ◽  
Author(s):  
Fangfang Wang ◽  
Zihao Liu ◽  
Kuanjian Zhang ◽  
Qingqing Zha ◽  
Yonghong Ni
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Ni Foam

Developing active, durable, and inexpensive electrocatalysts for oxygen evolution reaction (OER) is drawing increased interest. Here, a mild hydrothermal-electrodeposition two-step route is designed for preparation of Ce-doped Ni-S@NiMoO4 micropillars composites...

Variation of Electrocatalytic Activity of Isostructural Oxides Sr2LaFeMnO7 and Sr2LaCoMnO7 for Hydrogen and Oxygen-Evolution Reactions

2021 ◽  
Author(s):  
Chandana C.W. Kananke-Gamage ◽  
Farshid Ramezanipour
Keyword(s):  
Magnetic Properties ◽  
Transition Metal ◽  
Charge Transport ◽  
Oxygen Evolution ◽  
Electrocatalytic Activity ◽  
Electronic Configuration

The effect of the electronic configuration of transition metal on electrocatalytic activity, charge transport, and magnetic properties is demonstrated through investigation of Sr2LaFeMnO7 and Sr2LaCoMnO7. The two compounds are isostructural...

Cross-Linked Co3O4 Nanowalls Synthesized by Electrochemical Oxidation of Metallic Cobalt Layer for Oxygen Evolution

2012 ◽  
Vol 1 (2) ◽  
pp. H8-H10 ◽  
Author(s):  
N. Zhang ◽  
Y. Fan ◽  
H. Fan ◽  
H. Shao ◽  
J. Wang ◽  
...  
Keyword(s):  
Electrochemical Oxidation ◽  
Oxygen Evolution ◽  
Metallic Cobalt ◽  
Cobalt Layer

scholarly journals Preparation of Polyaniline Nanofibers And Experimental Study On Their Electrochemical Properties And Conductivity

2021 ◽  
Author(s):  
Uihoa chg
Keyword(s):  
Oxygen Evolution ◽  
Electrocatalytic Activity ◽  
Fiber Length ◽  
Performance Test ◽  
Chemical Oxidation ◽  
Carbon Paper ◽  
Chlorine Evolution ◽  
Polyaniline Nanofibers ◽  
Nano Powder ◽  
Polyaniline Nanofiber

Abstract Among nano polyaniline materials, polyaniline nanofibers are the most important. The low conductivity and poor processability have become the biggest obstacles to the application of polyaniline as a practical material. The excellent characteristics of new polyaniline nanofiber materials can just overcome the shortcomings of Polyaniline in forming and processing. In this study, a new polyaniline nanofiber was prepared by chemical oxidation, its structure was characterized, the mechanism of improving its conductivity was studied, and its superior electrocatalytic activity was evaluated by Electrochemical performance test. The results show that the diameter of polyaniline nanofibers is 20nm ~ 50nm and the fiber length is 2µm ~ 5µm. The structure is uniform and the conductivity can reach 13.5 S/cm. he electrocatalytic activity of polyaniline nanofibers for oxygen evolution and chlorine evolution was systematically tested. It was found that the electrocatalytic activity of polyaniline nanofibers for oxygen evolution was higher than that of polyaniline nanofibers. The electrocatalytic activity of carbon paper electrode prepared by β-PbO2 nano powder is superior to that of traditional chlorine evolution anode Ti/RuO2.

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