Anchoring and space-confinement effects to form ultrafine Ru nanoclusters for efficient hydrogen generation

2018 ◽  
Vol 6 (28) ◽  
pp. 13859-13866 ◽  
Author(s):  
Jian Yang ◽  
Heng Guo ◽  
Shulin Chen ◽  
Yulan Li ◽  
Chao Cai ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Hydrogen Generation ◽  
Low Cost ◽  
Confinement Effects ◽  
Highly Efficient

Developing highly efficient, durable, and low-cost catalysts for the hydrogen evolution reaction (HER) is an eternal pursuit for scientists to replace Pt-based catalysts.

NiFePd/UiO-66 nanocomposites as highly efficient catalysts to accelerate hydrogen evolution from hydrous hydrazine

2019 ◽  
Vol 6 (10) ◽  
pp. 2727-2735 ◽  
Author(s):  
Xue Song ◽  
Pan Yang ◽  
Jingchuan Wang ◽  
Xiaochong Zhao ◽  
Yuanlin Zhou ◽  
...  
Keyword(s):  
Hydrazine Hydrate ◽  
Hydrogen Evolution ◽  
Hydrogen Generation ◽  
Low Cost ◽  
Efficient Catalyst ◽  
Highly Efficient ◽  
High Efficient ◽  
Nano Catalysts

NiFe nano-catalysts modified by the dopant of Pd were reducted on UiO-66 by NaBH4, which have been used as a low cost and high efficient catalyst with outstanding activity and durability for hydrogen generation from the decomposition of hydrazine hydrate.

scholarly journals Fabrication of Robust Hydrogen Evolution Reaction Electrocatalyst Using Ag2Se by Vacuum Evaporation

Nanomaterials ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1460
Author(s):  
Sajjad Hussain ◽  
Jinwoong Chae ◽  
Kamran Akbar ◽  
Dhanasekaran Vikraman ◽  
Linh Truong ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
First Principles ◽  
Hydrogen Adsorption ◽  
Hydrogen Generation ◽  
Low Cost ◽  
First Principles Calculations ◽  
Electrochemical Surface Area ◽  
Complex Catalyst ◽  
Catalyst Synthesis

Much research has been done on reliable and low-cost electrocatalysts for hydrogen generation by water splitting. In this study, we synthesized thin films of silver selenide (Ag2Se) using a simple thermal evaporation route and demonstrated their electrocatalytic hydrogen evolution reaction (HER) activity. The Ag2Se catalysts show improved electrochemical surface area and good HER electrocatalytic behavior (367 mV overpotential @ 10 mA·cm−2, exchange current density: ~1.02 × 10−3 mA·cm−2, and Tafel slope: 53 mV·dec−1) in an acidic medium). The reliability was checked in 0.5 M sulfuric acid over 20 h. Our first-principles calculations show the optimal energy of hydrogen adsorption, which is consistent with experimental results. The works could be further extended for finding a new catalyst by associating the selenide, sulfide or telluride-based materials without complex catalyst synthesis procedures.

scholarly journals Enhanced Hydrogen Evolution Reaction in Surface Functionalized MoS2 Monolayers

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 70
Author(s):  
Sangyeon Pak ◽  
Jungmoon Lim ◽  
John Hong ◽  
SeungNam Cha
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Hydrogen Generation ◽  
Low Cost ◽  
Transition Metal Dichalcogenides ◽  
Underlying Mechanism ◽  
Mos2 Monolayer ◽  
N Doping ◽  
Metal Dichalcogenides ◽  
Mos2 Monolayers

Monolayered, semiconducting MoS2 and their transition metal dichalcogenides (TMDCs) families are promising and low-cost materials for hydrogen generation through electrolytes (HER, hydrogen evolution reaction) due to their high activities and electrochemical stability during the reaction. However, there is still a lack of understanding in identifying the underlying mechanism responsible for improving the electrocatalytic properties of theses monolayers. In this work, we investigated the significance of controlling carrier densities in a MoS2 monolayer and in turn the corresponding electrocatalytic behaviors in relation to the energy band structure of MoS2. Surface functionalization was employed to achieve p-doping and n-doping in the MoS2 monolayer that led to MoS2 electrochemical devices with different catalytic performances. Specifically, the electron-rich MoS2 surface showed lower overpotential and Tafel slope compared to the MoS2 with surface functional groups that contributed to p-doping. We attributed such enhancement to the increase in the carrier density and the corresponding Fermi level that accelerated HER and charge transfer kinetics. These findings are of high importance in designing electrocatalysts based on two-dimensional TMDCs.

Construction of self-supporting Ni2P-WO3 heterostructure for highly efficient hydrogen evolution under both caustic and acidic conditions

2021 ◽  
Author(s):  
Benzhi Wang ◽  
Lixia Wang ◽  
Yongteng Qian ◽  
Yuting Yang ◽  
Tayirjan Taylor Isimjan ◽  
...  
Keyword(s):  
Energy Conversion ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Low Cost ◽  
Sustainable Energy ◽  
Significant Challenge ◽  
Highly Efficient ◽  
Construction Of Self ◽  
Energy Conversion Systems ◽  
Acidic Conditions

The development of low-cost and highly efficient hydrogen evolution reaction (HER) catalysts remains a significant challenge for the advancement of sustainable energy conversion systems. Herein, we have reported the successful...

Alloy-Strain-Output Induced Lattice Dislocation in Ni3FeN/Ni3Fe Ultrathin Nanosheets for Highly Efficient Overall Water Splitting

2021 ◽  
Author(s):  
Zijian Li ◽  
Haeseong Jang ◽  
Danni Qin ◽  
Xiaoli Jiang ◽  
Xuqiang Ji ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Microstructure Evolution ◽  
Low Cost ◽  
Lattice Dislocation ◽  
Ultrathin Nanosheets ◽  
Highly Efficient ◽  
Partial Lattice

Designing highly efficient, stable and low-cost bifunctional electrocatalysts based on in-situ microstructure evolution, especially achieving partial lattice dislocation on highly crystalline texture, to catalyze hydrogen evolution reaction (HER) and oxygen...

scholarly journals Evaluation of different Ni–semiconductor composites as electrodes for enhanced hydrogen evolution reaction

2020 ◽  
Vol 4 (8) ◽  
pp. 3963-3970
Author(s):  
Melisa J. Gómez ◽  
Victoria Benavente-Llorente ◽  
Andrew Hainer ◽  
Gabriela I. Lacconi ◽  
Juan C. Scaiano ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Hydrogen Generation ◽  
Low Cost ◽  
Steel Plates ◽  
Over Time

A series of Ni–semiconductor composites are electrodeposited onto low-cost stainless-steel plates and used as electrodes for hydrogen generation from water; showing superb electrocatalytic activity over time.

RuP2-based hybrids derived from MOFs: highly efficient pH-universal electrocatalysts for hydrogen evolution reaction

2021 ◽  
Author(s):  
Ji-Sen Li ◽  
Meng-Jie Huang ◽  
Yu-Wei Zhou ◽  
Xiao-Nan Chen ◽  
Shuang Yang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Rational Design ◽  
Low Cost ◽  
Highly Efficient ◽  
First Time

Rational design of efficient, low-cost, and durable electrocatalysts for hydrogen evolution reaction (HER) in various pH media is highly desirable but remains challenging. Herein, for the first time, we present...

Hierarchical Cu2S hollow nanowire arrays for highly efficient hydrogen evolution reaction

2021 ◽  
Author(s):  
Ning Xie ◽  
Dong-Dong Ma ◽  
Yu-Lin Wu ◽  
Xintao Wu ◽  
Qi-Long Zhu
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Low Cost ◽  
Nanowire Arrays ◽  
Highly Efficient ◽  
Highly Active ◽  
Earth Abundant

Exploiting the highly active and low-cost electrocatalysts based on earth-abundant elements for hydrogen evolution reaction (HER) is an extremely desired but challenging task. Herein, we present a facile and economical...

Mutually beneficial Co3O4@MoS2 heterostructures as a highly efficient bifunctional catalyst for electrochemical overall water splitting

2018 ◽  
Vol 6 (5) ◽  
pp. 2067-2072 ◽  
Author(s):  
Jia Liu ◽  
Jinsong Wang ◽  
Bao Zhang ◽  
Yunjun Ruan ◽  
Houzhao Wan ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Low Cost ◽  
Bifunctional Catalyst ◽  
Highly Efficient ◽  
Overall Water Splitting ◽  
Bifunctional Electrocatalysts

Designing low-cost and highly efficient bifunctional electrocatalysts for compatible integration with the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) for overall water splitting is critical but challenging.

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