Tailoring the d-band center by borophene subunits in chromic diboride toward the hydrogen evolution reaction

2021 ◽  
Author(s):  
Yanli Chen ◽  
Jiashi Rong ◽  
Zizhun Wang ◽  
Qiang Tao ◽  
Quan Gan ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Transition Metal ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Band Center ◽  
Metal Diborides ◽  
Transition Metal Diborides

Transition metal diborides (TMdBs AlB2-type P6/mmm) electrocatalyst arouse much attention towards hydrogen evolution reaction (HER), because of MoB2 (P6/mmm) exhibits superior catalytic activity. While the deep reason of activity in...

Transition metal doping activated basal-plane catalytic activity of two-dimensional 1T’-ReS2 for hydrogen evolution reaction: a first-principles calculation study

Nanoscale ◽  
2019 ◽  
Vol 11 (21) ◽  
pp. 10402-10409 ◽  
Author(s):  
Jing Pan ◽  
Rui Wang ◽  
Xiaoyong Xu ◽  
Jingguo Hu ◽  
Liang Ma
Keyword(s):  
Catalytic Activity ◽  
Transition Metal ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
First Principles ◽  
Basal Plane ◽  
First Principles Calculation ◽  
Transition Metal Doping ◽  
Two Dimensional ◽  
Cr Doping

Non-noble transition metals Mo and Cr doping greatly enhances the basal-plane catalytic activity of two-dimensional 1T′-ReS2 for hydrogen evolution reaction as comparable with those of Pt-doping.

scholarly journals Basal-Plane Catalytic Activity of Layered Metallic Transition Metal Ditellurides for the Hydrogen Evolution Reaction

2020 ◽  
Vol 10 (9) ◽  
pp. 3087 ◽  
Author(s):  
Hagyeong Kwon ◽  
Dongyeon Bae ◽  
Hyeyoung Jun ◽  
Byungdo Ji ◽  
Dongyeun Won ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Transition Metal ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Basal Plane ◽  
Transition Metal Dichalcogenides ◽  
Charge Transfer Resistance ◽  
Transfer Resistance ◽  
Metal Dichalcogenides ◽  
Turn Over Frequency

We report the electrochemical hydrogen evolution reaction (HER) of two-dimensional metallic transition metal dichalcogenides (TMDs). TMTe2 (TM: Mo, W, and V) single crystals were synthesized and characterized by optical microscopy, X-ray diffraction, and electrochemical measurements. We found that TMTe2 acts as a HER-active catalyst due to the inherent catalytic activity of its basal planes. Among the three metallic TMTe2, VTe2 shows the best HER performance with an overpotential of 441 mV and a Tafel slope of 70 mV/dec. It is 668 mV and 137 mV/dec for MoTe2 and 692 mV and 169 mV/dec for WTe2. Even though VTe2 has the lowest values in the exchange current density, the active site density, and turn-over-frequency (TOF) among the three TMTe2, the lowest charge transfer resistance (RCT) of VTe2 seems to be critical to achieving the best HER performance. First-principles calculations revealed that the basal-plane-active HER performance of metallic TMDs can be further enhanced with some Te vacancies. Our study paves the way to further study of the inherent catalytic activity of metallic 2D materials for active hydrogen production.

Electrocatalytic performance of ultrasmall Mo2C affected by different transition metal dopants in hydrogen evolution reaction

Nanoscale ◽  
2018 ◽  
Vol 10 (13) ◽  
pp. 6080-6087 ◽  
Author(s):  
Feiyang Yu ◽  
Ya Gao ◽  
Zhongling Lang ◽  
Yuanyuan Ma ◽  
Liying Yin ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Transition Metal ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electrocatalytic Performance

A series of nanoscale TM-Mo2C@C electrocatalysts with similar size, morphology, and TM/Mo component ratios were prepared, revealing the effects of various TM dopants on catalytic activity of the Mo2C for HER.

Embedding tetrahedral 3d transition metal TM4 clusters into the cavity of two-dimensional graphdiyne to construct highly efficient and nonprecious electrocatalysts for hydrogen evolution reaction

2020 ◽  
Vol 22 (6) ◽  
pp. 3254-3263 ◽  
Author(s):  
Ruiqi Ku ◽  
Guangtao Yu ◽  
Jing Gao ◽  
Xuri Huang ◽  
Wei Chen
Keyword(s):  
Catalytic Activity ◽  
Transition Metal ◽  
Hydrogen Evolution ◽  
Structural Stability ◽  
Hydrogen Evolution Reaction ◽  
High Catalytic Activity ◽  
Two Dimensional ◽  
Composite Nanostructures ◽  
Highly Efficient ◽  
High Structural Stability

Coupled with the high structural stability and good conductivity, all the new 2D composite nanostructures TM4@GDY (TM = Sc, Ti, Mn, Fe, Co, Ni and Cu) can uniformly exhibit considerably high catalytic activity for hydrogen evolution reaction.

Transition metal modification and carbon vacancy promoted Cr2CO2(MXenes): a new opportunity for a highly active catalyst for the hydrogen evolution reaction

2018 ◽  
Vol 6 (42) ◽  
pp. 20956-20965 ◽  
Author(s):  
Yu-Wen Cheng ◽  
Jian-Hong Dai ◽  
Yu-Min Zhang ◽  
Yan Song
Keyword(s):  
Catalytic Activity ◽  
Transition Metal ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Active Catalyst ◽  
Carbon Vacancy ◽  
Highly Active

Transition metal (TM) modification and carbon vacancy engineering promoted the hydrogen evolution reaction (HER) catalytic activity of Cr2CO2.

Catalytic activity for the hydrogen evolution reaction of edges in Janus monolayer MoXY (X/Y = S, Se, and Te)

2018 ◽  
Vol 20 (46) ◽  
pp. 29423-29429 ◽  
Author(s):  
Wenwu Shi ◽  
Kaimin Fan ◽  
Zhiguo Wang
Keyword(s):  
Catalytic Activity ◽  
Transition Metal ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Noble Metals ◽  
Low Cost ◽  
Transition Metal Dichalcogenides ◽  
Metal Dichalcogenides

Monolayer transition metal dichalcogenides (TMDs) have been regarded as the most promising low-cost alternatives to noble metals as catalysts for the hydrogen evolution reaction (HER).

Engineering Sulfur Vacancies into Fe9S10 Nanosheet Arrays for Efficient Alkaline Hydrogen Evolution

Nanoscale ◽  
2021 ◽  
Author(s):  
Wenjun He ◽  
Jianing Cheng ◽  
Yaohui Gao ◽  
Caichi Liu ◽  
Jianling Zhao ◽  
...  
Keyword(s):  
Transition Metal ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Metal Sulfides ◽  
Transition Metal Sulfides ◽  
Nanosheet Arrays ◽  
Excellent Activity ◽  
Earth Abundant ◽  
Iron Based

The development of earth-abundant transition metal sulfides electrocatalysts with excellent activity and stability toward alkaline hydrogen evolution reaction (HER) is critical but challenging. Iron-based sulfides are favored due to their...

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