scholarly journals Transition Metal Chalcogenides for the Electrocatalysis of Water

2020 ◽  
Author(s):  
Chi-Ang Tseng ◽  
Chuan-Pei Lee
Keyword(s):  
Transition Metal ◽  
Vapor Phase ◽  
Hydrogen Evolution Reaction ◽  
Solvothermal Synthesis ◽  
Chemical Vapor ◽  
Metal Chalcogenides ◽  
Preparation Methods ◽  
Transition Metal Chalcogenides ◽  
Electrochemical Water Splitting

Sustainable energy technology has received enormous attention in recent years. Specifically, electrochemical water splitting is considered to be the cleanest technique for the production of promising fuels, for example, hydrogen and oxygen, where transition metal (di)chalcogenides (TMCs) as electrocatalysts for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) have been a growing interest. In this chapter, the typical preparation methods of TMCs such as chemical vapor phase deposition (CVD) and solvothermal synthesis are introduced. Then, several TMC materials for catalyzing HER and OER are reviewed. Most importantly, this chapter also introduced some in situ approaches to realize the mechanism of electrocatalytic behavior toward HER and OER. Finally, the conclusion and futuristic prospects of TMCs in HER and OER are discussed.

In situ photo-assisted deposition and photocatalysis of ZnIn2S4/transition metal chalcogenides for enhanced degradation and hydrogen evolution under visible light

2016 ◽  
Vol 45 (2) ◽  
pp. 552-560 ◽  
Author(s):  
Wei Yang Lim ◽  
Minghui Hong ◽  
Ghim Wei Ho
Keyword(s):  
Hydrogen Production ◽  
Transition Metal ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Metal Chalcogenides ◽  
Co Catalyst ◽  
Photocatalytic Hydrogen Production ◽  
Transition Metal Chalcogenides ◽  
Enhanced Degradation

In-situ aqueous photo-assisted deposition of transition metal chalcogenides co-catalyst has shown to infiltrate hierarchical host ZnIn2S4 photocatalyst for efficient photocatalytic hydrogen production and degradation under visible light.

scholarly journals Interface Engineering of Heterogeneous Transition Metal Chalcogenides for Electrocatalytic Hydrogen Evolution

2022 ◽  
Author(s):  
Ruru Song ◽  
Deyu Li ◽  
Yafeng Xu ◽  
Junfeng Gao ◽  
Lu Wang ◽  
...  
Keyword(s):  
Transition Metal ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Active Sites ◽  
Metal Chalcogenides ◽  
Interface Engineering ◽  
Transition Metal Chalcogenides

MoS2 and MoSe2 are recognized as the promising electrocatalysts for hydrogen evolution reaction (HER), but the active sites are mainly located on the edge, limiting their electrochemical efficiency. Here we...

scholarly journals Tunable electronic structure of two-dimensional transition metal chalcogenides for optoelectronic applications

Nanophotonics ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 1675-1694 ◽  
Author(s):  
Yumei Jing ◽  
Baoze Liu ◽  
Xukun Zhu ◽  
Fangping Ouyang ◽  
Jian Sun ◽  
...  
Keyword(s):  
Transition Metal ◽  
Transition Metal Dichalcogenides ◽  
Optoelectronic Devices ◽  
Metal Chalcogenides ◽  
Two Dimensional ◽  
Metal Dichalcogenides ◽  
Transition Metal Chalcogenides ◽  
Optoelectronic Applications ◽  
Chemical Strategies

AbstractDiffering from its bulk counterparts, atomically thin two-dimensional transition metal dichalcogenides that show strong interaction with light are considered as new candidates for optoelectronic devices. Either physical or chemical strategies can be utilized to effectively tune the intrinsic electronic structures for adopting optoelectronic applications. This review will focus on the different tuning strategies that include its physics principles, in situ experimental techniques, and its application of various optoelectronic devices.

Roles of salts in the chemical vapor deposition synthesis of two-dimensional transition metal chalcogenides

2020 ◽  
Vol 49 (30) ◽  
pp. 10319-10327 ◽  
Author(s):  
Chunyu Xie ◽  
Pengfei Yang ◽  
Yahuan Huan ◽  
Fangfang Cui ◽  
Yanfeng Zhang
Keyword(s):  
Chemical Vapor Deposition ◽  
Transition Metal ◽  
Vapor Deposition ◽  
Transition Metal Dichalcogenides ◽  
Chemical Vapor ◽  
Metal Chalcogenides ◽  
Two Dimensional ◽  
Metal Dichalcogenides ◽  
Transition Metal Chalcogenides

This Frontier highlights the roles of added salts in the chemical vapor deposition synthesis of two-dimensional transition metal dichalcogenides.

scholarly journals Facile Synthesis of N-Doped WS2 Nanosheets as an Efficient and Stable Electrocatalyst for Hydrogen Evolution Reaction in Acidic Media

Catalysts ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1238 ◽  
Author(s):  
Arpan Kumar Nayak ◽  
Enhbayar Enhtuwshin ◽  
So Jung Kim ◽  
HyukSu Han
Keyword(s):  
Transition Metal ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Active Sites ◽  
Chemical Agent ◽  
Metal Chalcogenides ◽  
Practical Applications ◽  
Transition Metal Chalcogenides ◽  
Acidic Conditions ◽  
Ws2 Nanosheets

Transition metal chalcogenides have been widely studied as a promising electrocatalyst for the hydrogen evolution reaction (HER) in acidic conditions. Among various transition metal chalcogenides, tungsten disulfide (WS2) is a distinguishable candidate due to abundant active sites and good electrical properties. Herein, we report a facile and selective synthetic method to synthesize WS2 with an intriguing two-dimensional nanostructure by using cysteine (C3H7NO2S) as a chemical agent. In addition, nitrogen can be incorporated during chemical synthesis from cysteine, which may be helpful for enhancing the HER. The electrocatalytic activity of N-doped WS2 exhibits a promising HER in acidic conditions, which are not only higher than W18O49 nanowires and hex-WO3 nanowires, but also comparable to the benchmark Pt/C. Moreover, excellent electrocatalytic stability is also demonstrated for acidic HER during long-term tests, thus highlighting its potential use of practical applications as an electrolyzer.

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