Facile synthesis of ultrathin two-dimensional nanosheets-constructed MCo2O4 (M = Ni, Cu, Zn) nanotubes for efficient photocatalytic oxygen evolution

Nanoscale ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 3871-3876 ◽  
Author(s):  
Erli Ding ◽  
Ali Li ◽  
Hanwen Liu ◽  
Weisheng Liu ◽  
Fengjuan Chen ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Oxygen Evolution ◽  
Water Oxidation ◽  
Oxidation Reaction ◽  
High Photocatalytic Activity ◽  
Two Dimensional ◽  
Facile Synthesis

A simple and versatile approach was developed to synthesize hierarchical nanosheets-constructed MCo2O4 (M = Ni, Cu, Zn) nanotubes. The resultant nanotubes exhibited high photocatalytic activity toward water oxidation reaction.

CoOx/UiO-66 and NiO/UiO-66 Heterostructures with UiO-66 Frameworks for Enhanced Oxygen Evolution Reactions

2021 ◽  
Author(s):  
Guangjin Zhang ◽  
Victor Charles ◽  
Yong Yang ◽  
Menglei Yuan ◽  
Jitao Zhang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Water Oxidation ◽  
Oxidation Reaction ◽  
Widespread Application ◽  
Coupled Process

Water oxidation reaction involves a four electron-proton coupled process that is kinetically sluggish and has hindered the widespread application of water-splitting technology. Metal-MOF-coupled heterostructures serve as good OER electrocatalysts due...

scholarly journals On Photocatalytic Activity of Systems of Titania/(Fe (II, III))-Type in Aqueous Suspensions

2018 ◽  
Vol 17 (6) ◽  
pp. 521-527
Author(s):  
V. A. Gorbunova ◽  
L. M. Sliapniova
Keyword(s):  
Photocatalytic Activity ◽  
Oxidation Reaction ◽  
High Photocatalytic Activity ◽  
Organic Dye ◽  
Iron Ions ◽  
Physico Chemical ◽  
Photocatalytic System ◽  
Initial Suspension ◽  
Hydrolysis Of ◽  
Chemical Water

. The photocatalytic activity of three systems, promising for chemical water purification technologies, was experimentally compared, based on a combination of titanium dioxide/(Fe(II, III)), applying to the model oxidation reaction of methylorange organic dye in an aqueous medium. Herewith the cases of photocatalytic systems were investigated, which are based on: a) titania hydrosol obtained by hydrolysis of titanium isobutylate; b) a similar hydrosol with addition of Fe(III) ions; c) suspension of ilmenite powder based on FeTiO3. As a result of the investigation, the increase of the rate of destruction of methylorange by more than two times was found in the system with the introduction of a small amount of iron ions into initial suspension of the TiO2 hydrosol (at the obtaining a medium with the Fe3+ concentration up to 3.7 × 10–5 M). In the photocatalytic system, based on the suspension of pretreated (with suphation and calcination) ilmenite powder, enough high photocatalytic activity (the degree of methylorange decomposition up to 77 %) was measured but at a higher exposure than for the case of systems based on the TiO2 hydrosol. For the photocatalytic systems of the type being investigated, a possible mechanism of increasing their oxidative activity was briefly considered, which requires an additional physico-chemical analysis.

Promoting the urea oxidation and water oxidation through interface construction on CeO2 @CoFe2O4 heterostructure

2021 ◽  
Author(s):  
Zhixin Dai ◽  
Xiaoqiang Du ◽  
Yanhong Wang ◽  
Xinghua Han ◽  
Xiaoshuang Zhang
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Oxidation Reaction ◽  
Spinel Ferrites

Spinel ferrites are considered as practical and promising oxygen evolution reaction (OER) and urea oxidation reaction (UOR) electrocatalysts because of their advantages in adsorption and activation of electrocatalytic substances. CeO2...

NixCu1−x/CuO/Ni(OH)2 as highly active and stable electrocatalysts for oxygen evolution reaction

2021 ◽  
Vol 45 (39) ◽  
pp. 18482-18490
Author(s):  
Xiaoqiang Wu ◽  
Chaoyou Yong ◽  
Xuguang An ◽  
Qingquan Kong ◽  
Weitang Yao ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Small Molecule ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Oxidation Reaction ◽  
Cost Effective ◽  
Oxidation Reactions ◽  
Energy Applications ◽  
Highly Active ◽  
Cu Alloy

Ni–Cu alloy-based nanomaterials are representative cost-effective materials that have been widely used as highly active and stable electrocatalysts for electrochemical energy applications, such as the water oxidation reaction, the methanol/ethanol reaction and many other small molecule oxidation reactions.

Boosting the electrochemical water oxidation reaction of hierarchical nanoarrays through NiFe-oxides/Ag heterointerfaces

2018 ◽  
Vol 54 (72) ◽  
pp. 10187-10190 ◽  
Author(s):  
Bin Zhu ◽  
Qi Hu ◽  
Xiufang Liu ◽  
Guomin Li ◽  
Liangdong Fan ◽  
...  
Keyword(s):  
High Activity ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Oxidation Reaction

The heterointerfaces between metallic Ag and NiFe-oxides on hierarchical arrays are found to possess high activity for the alkaline oxygen evolution reaction.

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