Two-dimensional MOS2 for hydrogen evolution reaction catalysis: The electronic structure regulation

Nano Research ◽  
2020 ◽  
Author(s):  
Shuwen Niu ◽  
Jinyan Cai ◽  
Gongming Wang
Keyword(s):  
Electronic Structure ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Two Dimensional ◽  
Structure Regulation

scholarly journals Electronic Structure Regulation on the Ultra-thin MOF-derived NiSe2/NiS2@NC Heterojunction for Promoting the Hydrogen Evolution Reaction

2022 ◽  
Author(s):  
Kebin Lu ◽  
Jianpeng Sun ◽  
Chuanhai Jiang ◽  
Huakai Xu ◽  
Fangna Dai ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Transition Metal ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Low Cost ◽  
Narrow Bandgap ◽  
Structure Regulation ◽  
Metal Selenides

Transition metal selenides (TMSes) is considered a promising electrocatalyst for hydrogen evolution reaction (HER) due to narrow bandgap, unique morphology and low cost. Herein, using Ni-MOF as precursor, NiSe2/NiS2@NC electrocatalyst...

Defect engineering in two-dimensional electrocatalysts for hydrogen evolution

Nanoscale ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 4283-4294 ◽  
Author(s):  
Junfeng Xie ◽  
Xueying Yang ◽  
Yi Xie
Keyword(s):  
Electronic Structure ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Active Sites ◽  
Active Species ◽  
Multiple Roles ◽  
Two Dimensional ◽  
Defect Engineering

Defect engineering could provide rich active sites, optimized electronic structure and intimate anchoring of active species, displaying multiple roles in promoting the electrocatalytic hydrogen evolution reaction.

scholarly journals Ordered clustering of single atomic Te vacancies in atomically thin PtTe2 promotes hydrogen evolution catalysis

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xinzhe Li ◽  
Yiyun Fang ◽  
Jun Wang ◽  
Hanyan Fang ◽  
Shibo Xi ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Thermal Treatment ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Active Sites ◽  
Catalytic Properties ◽  
Reactive Intermediates ◽  
Two Dimensional ◽  
Binding Strength ◽  
Highly Active

AbstractExposing and stabilizing undercoordinated platinum (Pt) sites and therefore optimizing their adsorption to reactive intermediates offers a desirable strategy to develop highly efficient Pt-based electrocatalysts. However, preparation of atomically controllable Pt-based model catalysts to understand the correlation between electronic structure, adsorption energy, and catalytic properties of atomic Pt sites is still challenging. Herein we report the atomically thin two-dimensional PtTe2 nanosheets with well-dispersed single atomic Te vacancies (Te-SAVs) and atomically well-defined undercoordinated Pt sites as a model electrocatalyst. A controlled thermal treatment drives the migration of the Te-SAVs to form thermodynamically stabilized, ordered Te-SAV clusters, which decreases both the density of states of undercoordinated Pt sites around the Fermi level and the interacting orbital volume of Pt sites. As a result, the binding strength of atomically defined Pt active sites to H intermediates is effectively reduced, which renders PtTe2 nanosheets highly active and stable in hydrogen evolution reaction.

Electronic structure engineering of single atomic Ru by Ru nanoparticles to enable enhanced activity for alkaline water reduction

2019 ◽  
Vol 7 (33) ◽  
pp. 19531-19538 ◽  
Author(s):  
Qi Hu ◽  
Guomin Li ◽  
Xiaowan Huang ◽  
Ziyu Wang ◽  
Hengpan Yang ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electronic Structures ◽  
Alkaline Water ◽  
Water Reduction ◽  
Ru Nanoparticles ◽  
Enhanced Activity ◽  
Structure Engineering

The electronic structures of single atomic Ru (SA-Ru) were suitably optimized by nearby Ru NPs for boosting the hydrogen evolution reaction (HER) over SA-Ru.

scholarly journals Modulating electronic structure of metal-organic frameworks by introducing atomically dispersed Ru for efficient hydrogen evolution

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yamei Sun ◽  
Ziqian Xue ◽  
Qinglin Liu ◽  
Yaling Jia ◽  
Yinle Li ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Density Functional ◽  
Metal Organic Frameworks ◽  
Catalyst Design ◽  
Single Atom ◽  
Hydrogen Energy ◽  
Structure Of Metal ◽  
Metal Organic

AbstractDeveloping high-performance electrocatalysts toward hydrogen evolution reaction is important for clean and sustainable hydrogen energy, yet still challenging. Herein, we report a single-atom strategy to construct excellent metal-organic frameworks (MOFs) hydrogen evolution reaction electrocatalyst (NiRu0.13-BDC) by introducing atomically dispersed Ru. Significantly, the obtained NiRu0.13-BDC exhibits outstanding hydrogen evolution activity in all pH, especially with a low overpotential of 36 mV at a current density of 10 mA cm−2 in 1 M phosphate buffered saline solution, which is comparable to commercial Pt/C. X-ray absorption fine structures and the density functional theory calculations reveal that introducing Ru single-atom can modulate electronic structure of metal center in the MOF, leading to the optimization of binding strength for H2O and H*, and the enhancement of HER performance. This work establishes single-atom strategy as an efficient approach to modulate electronic structure of MOFs for catalyst design.

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