Reaction Mechanism and Strategy for Optimizing the Hydrogen Evolution Reaction on Single-Layer 1T′ WSe2 and WTe2 Based on Grand Canonical Potential Kinetics

2021 ◽  
Author(s):  
Jie Song ◽  
Soonho Kwon ◽  
Md Delowar Hossain ◽  
Sheng Chen ◽  
Zhenyu Li ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Single Layer ◽  
Grand Canonical

Unveiling a Photoinduced Hydrogen Evolution Reaction Mechanism via the Concerted Formation of Uranyl Peroxide

2020 ◽  
Vol 59 (12) ◽  
pp. 8353-8360 ◽  
Author(s):  
Enric Petrus ◽  
Mireia Segado ◽  
Nuno A. G. Bandeira ◽  
Carles Bo
Keyword(s):  
Reaction Mechanism ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction

Détermination du mécanisme de dégagement d'hydrogène sur le niobium en milieu alcalin

1977 ◽  
Vol 55 (3) ◽  
pp. 375-379 ◽  
Author(s):  
Cherubala P. Vijayan ◽  
Dominique-Louis Piron
Keyword(s):  
Reaction Mechanism ◽  
Standard Deviation ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Reaction Order ◽  
Alkaline Media ◽  
Tafel Slopes

The mechanism of the hydrogen evolution reaction on niobium is evaluated in alkaline media at 24 °C. The reaction order of zero, along with the observed Tafel slopes of 120 mV/decade (standard deviation 8 mV/dec.), indicate the Heyrovsky reaction mechanism to be applicable for the hydrogen evolution reaction. The presence of anions such as sulfate and chloride does not influence the mechanism.

Theoretical investigation on the hydrogen evolution reaction mechanism at MoS2 heterostructures: the essential role of the 1T/2H phase interface

2020 ◽  
Vol 10 (2) ◽  
pp. 458-465 ◽  
Author(s):  
Tian Zhang ◽  
Houyu Zhu ◽  
Chen Guo ◽  
Shoufu Cao ◽  
Chi-Man Lawrence Wu ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Dft Calculations ◽  
Hydrogen Evolution ◽  
Theoretical Investigation ◽  
Hydrogen Evolution Reaction ◽  
Basal Plane ◽  
Essential Role ◽  
Phase Interface

DFT calculations have been performed to study the HER mechanism at 1T/2H MoS2 heterostructures. The HER activity along the 1T/2H phase interface is comparable with those at the Mo-edge of 2H MoS2 and the basal plane of 1T MoS2.

Hydrogen evolution reaction mechanism on 2H-MoS2 electrocatalyst

2019 ◽  
Vol 498 ◽  
pp. 143869 ◽  
Author(s):  
Wang Li ◽  
Guihua Liu ◽  
Jingde Li ◽  
Yanji Wang ◽  
Luis Ricardez-Sandoval ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction

Optimizing the Volmer Step by Single-Layer Nickel Hydroxide Nanosheets in Hydrogen Evolution Reaction of Platinum

ACS Catalysis ◽  
2015 ◽  
Vol 5 (6) ◽  
pp. 3801-3806 ◽  
Author(s):  
Lei Wang ◽  
Chong Lin ◽  
Dekang Huang ◽  
Jianmei Chen ◽  
Lin Jiang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Nickel Hydroxide ◽  
Single Layer

Directly Synthesis of 1T-phase MoS2 Nanosheets with Abundance Sulfur-Vacancies through (CH3)4N+ Cations-Intercalation for Hydrogen Evolution Reaction†

2021 ◽  
Author(s):  
Hongqiang Jin ◽  
Yu Yu ◽  
Qikai Shen ◽  
Peipei Li ◽  
Jia Yu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Noble Metals ◽  
Single Layer ◽  
Mos2 Nanosheets ◽  
Molybdenum Disulphide

1T-phase molybdenum disulphide (MoS2) is considered as one of the most promising candidates to substitute noble metals in hydrogen evolution reaction (HER). Fabricating single layer 1T-phase MoS2 with abundance sulfur...

scholarly journals On the kinetics of the hydrogen evolution reaction on zinc in sulfate solutions

2001 ◽  
Vol 66 (11-12) ◽  
pp. 811-823 ◽  
Author(s):  
T. Trisovic ◽  
Lj. Gajic-Krstajic ◽  
N. Krstajic ◽  
M. Vojnovic
Keyword(s):  
Reaction Mechanism ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Active Sites ◽  
Electrochemical Impedance ◽  
Active Role ◽  
Potential Region ◽  
Sulfate Solutions ◽  
Ph Range ◽  
Kinetics Of

The kinetics and mechanism of the hydrogen evolution reaction (her) were studied on zinc in 1.0 mol dm-3 Na2SO4 at 298 K, in the pH range 4.4 - 10. It was found that a combination of classical potentiostatic steady-state voltammetry (PSV) and electrochemical impedance spectroscopy (EIS) can help to elucidate dilemmas concerning the mechanism of this reaction. Thus, over the whole potential region, the reaction path of the her on zinc cannot be presented by the classical Volmer-Tafel-Heyrovsky route. It was found that the very complex S-shape of the polarization curves could be explained by two parallel reaction mechanisms for the her. The first reaction mechanism is a consecutive combination of three steps, in which the surface zinc oxide plays an active role in the her, and second reaction mechanism is a consecutive combination of a Volmer step, followed by a Heyrovsky step. The second mechanism is dominant in the more negative potential region where the active sites for the her are metallic zinc.

Controllable desulfurization in single layer MoS2 by cationic current treatment in hydrogen evolution reaction

2020 ◽  
Vol 507 ◽  
pp. 145181 ◽  
Author(s):  
Tri Khoa Nguyen ◽  
Sangmin Jeong ◽  
Kovendhan Manavalan ◽  
Jong-Sang Youn ◽  
Cheol-Min Park ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Single Layer ◽  
Current Treatment ◽  
Cationic Current
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