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

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.

Reaction Paths in Concurrence: The Electrochemical Hydrogen Reaction on GaAs(111)A- and GaAs(110)-Surfaces A Quantumchemical Approach

2001 ◽  
Vol 215 (4) ◽  
Author(s):  
C. Engler ◽  
A. Hofmann
Keyword(s):  
Reaction Mechanism ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Reaction Paths ◽  
Semiconductor Electrodes ◽  
Step Mechanism

We have performed quantumchemical investigations towards a further explanation of the reaction mechanism of the hydrogen evolution reaction on semiconductor electrodes (continuation of Z. Phys. Chem. 210 (1999) 95). Details of the two-step-mechanism via H

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