Intrinsically Synergistic Active Centers Coupled with Surface Metal Doping To Facilitate Alkaline Hydrogen Evolution Reaction

2019 ◽  
Vol 123 (39) ◽  
pp. 24220-24224 ◽  
Author(s):  
Hua-Fu Zhong ◽  
Hui Yin ◽  
Deng-Xue Zhang ◽  
Li-Yong Gan ◽  
Ping Wang
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Active Centers ◽  
Metal Doping ◽  
Surface Metal

scholarly journals Catalytic Behavior of Molybdenum Sulfide for the Hydrogen Evolution Reaction as a Function of Crystallinity and Particle Size Using Carbon Multiwall Nanotubes as Substrates

2020 ◽  
Vol 234 (5) ◽  
pp. 1021-1043 ◽  
Author(s):  
Diana Stellmach ◽  
Fanxing Xi ◽  
Ulrike Bloeck ◽  
Peter Bogdanoff ◽  
Sebastian Fiechter
Keyword(s):  
Carbon Nanotubes ◽  
Particle Size ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Active Sites ◽  
Molybdenum Sulfide ◽  
Active Centers ◽  
Catalytically Active ◽  
Multi Walled Carbon Nanotubes ◽  
Different Diameters

AbstractMolybdenum sulfide is of interest as a noble metal-free catalyst for the hydrogen evolution reaction (HER). In crystallized form, it shows a typical stacking of planar S–Mo–S layers whereas the catalytically active centers are situated on the edges of these entities characterized by non-saturated bonds of the molybdenum atoms. In this study, 2H-MoS2 is investigated as HER catalyst as a function of particle size using powder electrodes of different grain sizes and morphology. HER was also determined as a function of growth defects (bending of layers) and as a function of active sites employing MoS2 nanoparticles (NP). To study the influence of the substrate on the perfection of the transition metal disulfide, MoS2 nanosheets were deposited on multi-walled carbon nanotubes (MWCNTs) of different diameters. Highest activity was found for MoS2 nanosheets deposited on MWCNTs with a diameter smaller than 8 nm. At diameters larger than 10 nm, a wrapping of the nanotubes by partially bended stacks of S–Mo–S layers occurs, while at diameters smaller than 10 nm, individual MoS2 nanosheets of 3–5 S–Mo–S stacks of 3–4 nm in height and 10–20 nm in lateral extension surround the carbon nanotubes in form of hexagonal cylinders. The ratio of catalytically active non-van-der-Waals and hexagonal basal planes was determined electrochemically by electro-oxidation and correlated with HER activity.

Accelerated Hydrogen Evolution Reaction in CoS2 by Transition-Metal Doping

2018 ◽  
Vol 3 (4) ◽  
pp. 779-786 ◽  
Author(s):  
Jingyan Zhang ◽  
Yuchan Liu ◽  
Changqi Sun ◽  
Pinxian Xi ◽  
Shanglong Peng ◽  
...  
Keyword(s):  
Transition Metal ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Transition Metal Doping ◽  
Metal Doping

Synergistic engineering of MoS2 via dual-metal doping strategy towards hydrogen evolution reaction

2020 ◽  
Vol 529 ◽  
pp. 147117
Author(s):  
Dongchen Han ◽  
Zhaoyan Luo ◽  
Yang Li ◽  
Nanxing Gao ◽  
Junjie Ge ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Metal Doping ◽  
Dual Metal

scholarly journals Active site manipulation in MoS2 cluster electrocatalysts by transition metal doping

Nanoscale ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 4459-4472 ◽  
Author(s):  
Jo J. L. Humphrey ◽  
Rasmus Kronberg ◽  
Rongsheng Cai ◽  
Kari Laasonen ◽  
Richard E. Palmer ◽  
...  
Keyword(s):  
Transition Metal ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Active Site ◽  
Electrocatalytic Activity ◽  
Transition Metal Doping ◽  
Metal Doping ◽  
Atomistic Modelling

Combining precision cluster synthesis with atomistic modelling uncovers fundamental differences in the influence of transition metal dopants on the electrocatalytic activity of MoS2 towards the hydrogen evolution reaction.

Effects of Metal-Doping on Hydrogen Evolution Reaction Catalyzed by MAu24 and M2Au36 Nanoclusters (M = Pt, Pd)

2018 ◽  
Vol 10 (51) ◽  
pp. 44645-44653 ◽  
Author(s):  
Woojun Choi ◽  
Guoxiang Hu ◽  
Kyuju Kwak ◽  
Minseok Kim ◽  
De-en Jiang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Metal Doping

Few-Layered MoN-MnO Heterostructures with Interfacial-O Synergistic Active Centers Boosting Electrocatalytic Hydrogen Evolution

2021 ◽  
Author(s):  
Fei Lin ◽  
Hongye Qin ◽  
Tongzhou Wang ◽  
Lei Yang ◽  
Xuejie Cao ◽  
...  
Keyword(s):  
Metal Oxides ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
100Th Anniversary ◽  
Active Centers ◽  
Promising Strategy

Dedicated to the 100th anniversary of Chemistry at Nankai University Coupled with metal oxides in heterostructured catalysts have been regarded as promising strategy for promoting hydrogen evolution reaction (HER). However,...

Sign in / Sign up

Export Citation Format

Share Document