Synthesis and electrocatalytic mechanism of ultrafine MFe2O4 (M: Co, Ni, and Zn) nanocrystallites: M/Fe synergetic effects on electrochemical detection for Cu(II) and hydrogen evolution reaction performances

2021 ◽  
Author(s):  
Changchun Fan ◽  
Xingwu Zhai ◽  
Long Chen ◽  
Shanglong Peng ◽  
rong jiang ◽  
...  
Keyword(s):  
Metal Ions ◽  
Hydrogen Evolution ◽  
Electrochemical Detection ◽  
Hydrogen Evolution Reaction ◽  
Synergetic Effect ◽  
Vital Importance ◽  
Synergetic Effects ◽  
Electrocatalytic Mechanism ◽  
Spinel Oxides ◽  
Potential Applications

Binary spinel oxides with synergetic effect between metal ions in electronic microstructures have attracted significantly attentions due to their vital importance for both fundamental studies and potential applications. Herein, we...

Synergetic Effect of Ni2P and MXene Enhances Catalytic Activity in the Hydrogen Evolution Reaction

2021 ◽  
Vol 60 (3) ◽  
pp. 1604-1611
Author(s):  
Zepeng Lv ◽  
Meng Wang ◽  
Dong Liu ◽  
Kailiang Jian ◽  
Run Zhang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Synergetic Effect

Synergetic Effect of Graphene Oxide and Metal Organic Framework Nanocomposites as Electrocatalysts for Hydrogen Evolution Reaction

2020 ◽  
pp. 23-54
Author(s):  
Mogwasha D. Makhafola ◽  
Mpitloane J. Hato ◽  
Kabelo E. Ramohlola ◽  
Phuti S. Ramaripa ◽  
Thabiso C. Maponya ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Metal Organic Framework ◽  
Synergetic Effect ◽  
Metal Organic ◽  
Organic Framework

scholarly journals Fabrication of Hybrid Catalyst ZnO Nanorod/α-Fe2O3 Composites for Hydrogen Evolution Reaction

Crystals ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 356
Author(s):  
Kasimayan Uma ◽  
Elavarasan Muniranthinam ◽  
Siewhui Chong ◽  
Thomas C.-K Yang ◽  
Ja-Hon Lin
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Photoelectron Spectroscopy ◽  
Electrochemical Impedance ◽  
Nickel Foam ◽  
Zno Nanorods ◽  
Synergetic Effect ◽  
Zno Nanorod ◽  
Fe2o3 Nanoparticles ◽  
X Ray

This report presents the synthesis of ZnO nanorod/α-Fe2O3 composites by the hydrothermal method with different weight percentages of α-Fe2O3 nanoparticles. The as-synthesized nanorod composites were characterized by different techniques, such as X-ray diffraction (XRD), Fourier transform-infrared (FT-IR), field emission scanning electron microscopy (FE-SEM), electrochemical impedance spectroscopy (EIS), and X-ray photoelectron spectroscopy (XPS). From our results, it was found that the ZnO/α-Fe2O3 (3 wt%) nanorod composites exhibit a higher hydrogen evolution reaction (HER) activity when compared to other composites. The synergetic effect between ZnO and (3 wt%) of α-Fe2O3 nanocomposites resulted in a low onset potential of −125 mV, which can effectively produce more H2 than pure ZnO. The H2 production rate over the composite of ZnO/α-Fe2O3 (3 wt%) clearly shows a significant improvement in the photocatalytic activity in the heterojunction of the ZnO nanorods and α-Fe2O3 nanoparticles on nickel foam.

scholarly journals Rapid Synthesis of Nickel Boride/Graphene by Microwave Thermal Shock and its Application in Hydrogen Evolution Reaction

2022 ◽  
Vol 2160 (1) ◽  
pp. 012007
Author(s):  
Shuai Wang ◽  
Rui Zhao ◽  
Weidong Xue
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Current Density ◽  
Synergetic Effect ◽  
Specific Area ◽  
Clean Energy ◽  
Alkaline Media ◽  
Promising Candidate ◽  
Active Centre ◽  
Metal Borides

Abstract The urgent demand for sustainable and clean energy has promoted the development of water splitting. Herein, metal borides assisted synthesis of graphene-based material (Ni-B/G) has been carried out by facile and fast microwave heating method and applied to hydrogen evolution reaction (HER) in alkaline solution. The Ni-B combining with 2D graphene give rise to highly efficient HER performance with low overpotential of 187 mV at current density of 10 mA cm−2. In addition, it exhibits good stability and retains 76% of current density after continuous oxygen release. The excellent performance is ascribed to the synergetic effect of Ni-B and graphene. The Ni-B not only acts as initiator to adsorb microwave energy but also works as active centre of catalyst. The high conductivity and large specific area of graphene offer accessible contact between electrolyte and intermediates. Therefore, Ni-B/G indicates a promising candidate for HER in alkaline media.

scholarly journals Hydrogen evolution reaction at the interfaces of two-dimensional lateral heterostructures: a first-principles study

RSC Advances ◽  
2020 ◽  
Vol 10 (63) ◽  
pp. 38484-38489
Author(s):  
Huimin Hu ◽  
Jin-Ho Choi
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
First Principles ◽  
2D Materials ◽  
Two Dimensional ◽  
First Principles Study ◽  
Synergetic Effects

Owing to the synergetic effects of different two-dimensional (2D) materials, 2D heterostructures have recently attracted much attention in the field of catalysis.

Designed Borophene/TMDs Hybrid Catalysts for Enhanced Hydrogen Evolution Reaction

2021 ◽  
Author(s):  
Yuxing Lin ◽  
Mingxin Yu ◽  
Xiaoyan Li ◽  
weicheng gao ◽  
Licheng Wang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Electronic Properties ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Two Dimensional ◽  
Hybrid Catalysts ◽  
Potential Applications

Interlayer charge transfer in heterostructures plays an important role in tuning the electronic properties, which opens a new avenue for potential applications of two-dimensional nanomaterials. In this work, the hydrogen evolution...

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