Porous NiMoO4−x/MoO2 hybrids as highly effective electrocatalysts for the water splitting reaction

2018 ◽  
Vol 6 (26) ◽  
pp. 12361-12369 ◽  
Author(s):  
Zhe Zhang ◽  
Xingxing Ma ◽  
Jilin Tang
Keyword(s):  
Water Splitting ◽  
Atomic Level ◽  
Highly Active ◽  
Highly Effective

NiMoO4−x/MoO2 hybrids with highly active Mo5+ species and atomic-level coupled nanointerfaces were synthesized as highly effective electrocatalysts for the water splitting reaction.

One-pot pyrolysis synthesis of highly active Ru/RuOX nanoclusters for water splitting

Nano Research ◽  
2021 ◽  
Author(s):  
Fengyuan Zhu ◽  
Jiangyan Xue ◽  
Lingjian Zeng ◽  
Jingrui Shang ◽  
Shuanglong Lu ◽  
...  
Keyword(s):  
Water Splitting ◽  
One Pot ◽  
Highly Active ◽  
Pyrolysis Synthesis

Cathodic Corrosion Activated Fe-based Nanoglass as Highly-Active and -Stable Oxygen Evolution Catalyst for Water Splitting

2021 ◽  
Author(s):  
Kaiyao Wu ◽  
Fei Chu ◽  
Yuying Meng ◽  
Kaveh Edalati ◽  
Qingsheng Gao ◽  
...  
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Amorphous Alloys ◽  
Precious Metal ◽  
Active Sites ◽  
Metal Free ◽  
Highly Active ◽  
Stable Oxygen ◽  
Surface Active

Transition metal-based amorphous alloys have attracted increasing attention as precious-metal-free electrocatalysts for oxygen evolution reaction (OER) of water splitting due to their high macro-conductivity and abundant surface active sites. However,...

scholarly journals Sequential cocatalyst decoration on BaTaO2N towards highly-active Z-scheme water splitting

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Zheng Wang ◽  
Ying Luo ◽  
Takashi Hisatomi ◽  
Junie Jhon M. Vequizo ◽  
Sayaka Suzuki ◽  
...  
Keyword(s):  
Energy Conversion ◽  
Water Splitting ◽  
Energy Conversion Efficiency ◽  
Hydrogen Energy ◽  
Apparent Quantum Yield ◽  
Intimate Contact ◽  
Single Crystalline ◽  
Highly Active ◽  
Uniform Dispersion ◽  
Solar Hydrogen Production

AbstractOxynitride photocatalysts hold promise for renewable solar hydrogen production via water splitting owing to their intense visible light absorption. Cocatalyst loading is essential for activation of such oxynitride photocatalysts. However, cocatalyst nanoparticles form aggregates and exhibit weak interaction with photocatalysts, which prevents eliciting their intrinsic photocatalytic performance. Here, we demonstrate efficient utilization of photoexcited electrons in a single-crystalline particulate BaTaO2N photocatalyst prepared with the assistance of RbCl flux for H2 evolution reactions via sequential decoration of Pt cocatalyst by impregnation-reduction followed by site-selective photodeposition. The Pt-loaded BaTaO2N photocatalyst evolves H2 over 100 times more efficiently than before, with an apparent quantum yield of 6.8% at the wavelength of 420 nm, from a methanol aqueous solution, and a solar-to-hydrogen energy conversion efficiency of 0.24% in Z-scheme water splitting. Enabling uniform dispersion and intimate contact of cocatalyst nanoparticles on single-crystalline narrow-bandgap particulate photocatalysts is a key to efficient solar-to-chemical energy conversion.

Co/Cu-modified NiO film grown on nickel foam as a highly active and stable electrocatalyst for overall water splitting

2020 ◽  
Vol 49 (6) ◽  
pp. 1776-1784 ◽  
Author(s):  
Zhengang Guo ◽  
Xiaofeng Wang ◽  
Yangqin Gao ◽  
Zhifeng Liu
Keyword(s):  
Water Splitting ◽  
Nickel Foam ◽  
Low Cost ◽  
Overall Water Splitting ◽  
Highly Active ◽  
Development And Utilization

The development and utilization of low-cost and efficient electrocatalysts for overall water splitting is of great significance for future energy supplies.

Colloidal synthesis of monodisperse trimetallic IrNiFe nanoparticles as highly active bifunctional electrocatalysts for acidic overall water splitting

2017 ◽  
Vol 5 (47) ◽  
pp. 24836-24841 ◽  
Author(s):  
Luhong Fu ◽  
Gongzhen Cheng ◽  
Wei Luo
Keyword(s):  
Synergistic Effect ◽  
Size Distribution ◽  
Water Splitting ◽  
Average Diameter ◽  
Colloidal Synthesis ◽  
Synthetic Method ◽  
Alloy Nanoparticles ◽  
Narrow Size Distribution ◽  
Acidic Media ◽  
Highly Active

Monodisperse IrNiFe alloy nanoparticles with an average diameter of 2.2 nm have been synthesized by a colloidal synthetic method. By taking advantage of the synergistic effect between Ir, Ni and Fe and the ultrasmall NPs with narrow size distribution, the as-synthesized IrNiFe catalyst exhibits superior HER/OER performances in acidic media.

scholarly journals Electrodeposition of Pt-Decorated Ni(OH)2/CeO2 Hybrid as Superior Bifunctional Electrocatalyst for Water Splitting

Research ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Huanhuan Liu ◽  
Zhenhua Yan ◽  
Xiang Chen ◽  
Jinhan Li ◽  
Le Zhang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Cell Voltage ◽  
Water Electrolysis ◽  
Active Species ◽  
Water Dissociation ◽  
Electronic Interaction ◽  
Bifunctional Electrocatalyst ◽  
Highly Active ◽  
A Cell ◽  
Promising Application

The facile synthesis of highly active and stable bifunctional electrocatalysts to catalyze water splitting is attractive but challenging. Herein, we report the electrodeposition of Pt-decorated Ni(OH)2/CeO2 (PNC) hybrid as an efficient and robust bifunctional electrocatalyst. The graphite-supported PNC catalyst delivers superior hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) activities over the benchmark Pt/C and RuO2, respectively. For overall water electrolysis, the PNC hybrid only requires a cell voltage of 1.45 V at 10 mA cm−2 and sustains over 85 h at 1000 mA cm−2. The remarkable HER/OER performances are attributed to the superhydrophilicity and multiple effects of PNC, in which Ni(OH)2 and CeO2 accelerate HER on Pt due to promoted water dissociation and strong electronic interaction, while the electron-pulling Ce cations facilitate the generation of high-valence Ni OER-active species. These results suggest the promising application of PNC for H2 production from water electrolysis.

Direct synthesis of nitrogen-rich carbon sheets via polybenzoxazine as highly active electrocatalyst for water splitting

2018 ◽  
Vol 43 (29) ◽  
pp. 13266-13275 ◽  
Author(s):  
Periyasamy Thirukumaran ◽  
Raji Atchudan ◽  
Rukmanikrishnan Balasubramanian ◽  
Asrafali Shakila Parveen ◽  
Seong-Cheol Kim
Keyword(s):  
Water Splitting ◽  
Direct Synthesis ◽  
Highly Active
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