Ultrafine cable-like WC/W2C heterojunction nanowires covered by graphitic carbon towards highly efficient electrocatalytic hydrogen evolution

2018 ◽  
Vol 6 (31) ◽  
pp. 15395-15403 ◽  
Author(s):  
Lu-Nan Zhang ◽  
Yuan-Yuan Ma ◽  
Zhong-Ling Lang ◽  
Yong-Hui Wang ◽  
Shifa Ullah Khan ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Graphitic Carbon ◽  
Highly Efficient ◽  
Wide Ph Range ◽  
Carbon Coated ◽  
Ph Range

A carbon-coated ultrafine cable-like WC/W2C heterojunction nanowire electrocatalyst exhibits remarkable HER performance in a wide pH range.

Low-ruthenium-content NiRu nanoalloys encapsulated in nitrogen-doped carbon as highly efficient and pH-universal electrocatalysts for the hydrogen evolution reaction

2018 ◽  
Vol 6 (4) ◽  
pp. 1376-1381 ◽  
Author(s):  
You Xu ◽  
Shuli Yin ◽  
Chunjie Li ◽  
Kai Deng ◽  
Hairong Xue ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Efficient Catalyst ◽  
Nitrogen Doped ◽  
Highly Efficient ◽  
Wide Ph Range ◽  
Ph Range ◽  
Nitrogen Doped Carbon

A NiRu@N–C hybrid is fabricated and tested as an efficient catalyst for the hydrogen evolution reaction in a wide pH range.

Highly efficient hydrogen evolution triggered by a multi-interfacial Ni/WC hybrid electrocatalyst

2018 ◽  
Vol 11 (8) ◽  
pp. 2114-2123 ◽  
Author(s):  
Yuan-Yuan Ma ◽  
Zhong-Ling Lang ◽  
Li-Kai Yan ◽  
Yong-Hui Wang ◽  
Hua-Qiao Tan ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Hydrogen Evolution ◽  
Transfer Processes ◽  
Highly Efficient ◽  
Mass Transfer Processes ◽  
Wide Ph Range ◽  
Ph Range

A multi-interfacial Ni/WC@NC electrocatalyst exhibits highly efficient HER performance over a wide pH range via synergistic electron and mass transfer processes.

Salt-templated synthesis of defect-rich MoN nanosheets for boosted hydrogen evolution reaction

2017 ◽  
Vol 5 (46) ◽  
pp. 24193-24198 ◽  
Author(s):  
Jie Xiong ◽  
Weiwei Cai ◽  
Weijia Shi ◽  
Xinlei Zhang ◽  
Jing Li ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Templated Synthesis ◽  
Highly Efficient ◽  
Template Process ◽  
Wide Ph Range ◽  
Ph Range

The ultra-stable highly efficient HER over a wide pH range on defect-rich MoN nanosheets synthesized using a modified salt-template process.

scholarly journals Low-cost and highly efficient CoMoS4/NiMoS4-based electrocatalysts for hydrogen evolution reactions over a wide pH range

2016 ◽  
Vol 213 ◽  
pp. 236-243 ◽  
Author(s):  
Li Shao ◽  
Xing Qian ◽  
Xiaoying Wang ◽  
Hongmei Li ◽  
Rucai Yan ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Low Cost ◽  
Highly Efficient ◽  
Wide Ph Range ◽  
Hydrogen Evolution Reactions ◽  
Ph Range

scholarly journals Band Engineering and Morphology Control of Oxygen-Incorporated Graphitic Carbon Nitride Porous Nanosheets for Highly Efficient Photocatalytic Hydrogen Evolution

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Yunyan Wu ◽  
Pan Xiong ◽  
Jianchun Wu ◽  
Zengliang Huang ◽  
Jingwen Sun ◽  
...  
Keyword(s):  
Surface Area ◽  
Hydrogen Evolution ◽  
Carbon Nitride ◽  
Separation Efficiency ◽  
Physical Adsorption ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Photocatalytic Hydrogen Evolution ◽  
Band Engineering ◽  
Highly Efficient

AbstractGraphitic carbon nitride (g-C3N4)-based photocatalysts have shown great potential in the splitting of water. However, the intrinsic drawbacks of g-C3N4, such as low surface area, poor diffusion, and charge separation efficiency, remain as the bottleneck to achieve highly efficient hydrogen evolution. Here, a hollow oxygen-incorporated g-C3N4 nanosheet (OCN) with an improved surface area of 148.5 m2 g−1 is fabricated by the multiple thermal treatments under the N2/O2 atmosphere, wherein the C–O bonds are formed through two ways of physical adsorption and doping. The physical characterization and theoretical calculation indicate that the O-adsorption can promote the generation of defects, leading to the formation of hollow morphology, while the O-doping results in reduced band gap of g-C3N4. The optimized OCN shows an excellent photocatalytic hydrogen evolution activity of 3519.6 μmol g−1 h−1 for ~ 20 h, which is over four times higher than that of g-C3N4 (850.1 μmol g−1 h−1) and outperforms most of the reported g-C3N4 catalysts.

scholarly journals Defect-Rich Heterogeneous MoS2/rGO/NiS Nanocomposite for Efficient pH-Universal Hydrogen Evolution

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 662 ◽  
Author(s):  
Guangsheng Liu ◽  
Kunyapat Thummavichai ◽  
Xuefeng Lv ◽  
Wenting Chen ◽  
Tingjun Lin ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Active Sites ◽  
Reduced Graphene ◽  
Heterogeneous Interfaces ◽  
Wide Ph Range ◽  
Ph Range ◽  
A Current ◽  
Poor Stability

Molybdenum disulfide (MoS2) has been universally demonstrated to be an effective electrocatalytic catalyst for hydrogen evolution reaction (HER). However, the low conductivity, few active sites and poor stability of MoS2-based electrocatalysts hinder its hydrogen evolution performance in a wide pH range. The introduction of other metal phases and carbon materials can create rich interfaces and defects to enhance the activity and stability of the catalyst. Herein, a new defect-rich heterogeneous ternary nanocomposite consisted of MoS2, NiS and reduced graphene oxide (rGO) are synthesized using ultrathin αNi(OH)2 nanowires as the nickel source. The MoS2/rGO/NiS-5 of optimal formulation in 0.5 M H2SO4, 1.0 M KOH and 1.0 M PBS only requires 152, 169 and 209 mV of overpotential to achieve a current density of 10 mA cm−2 (denoted as η10), respectively. The excellent HER performance of the MoS2/rGO/NiS-5 electrocatalyst can be ascribed to the synergistic effect of abundant heterogeneous interfaces in MoS2/rGO/NiS, expanded interlayer spacings, and the addition of high conductivity graphene oxide. The method reported here can provide a new idea for catalyst with Ni-Mo heterojunction, pH-universal and inexpensive hydrogen evolution reaction electrocatalyst.

Carbon-coated MoS2nanosheets as highly efficient electrocatalysts for the hydrogen evolution reaction

2015 ◽  
Vol 27 (4) ◽  
pp. 045402 ◽  
Author(s):  
Shuo Dou ◽  
Jianghong Wu ◽  
Li Tao ◽  
Anli Shen ◽  
Jia Huo ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Highly Efficient ◽  
Carbon Coated
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