Noble-Metal-Free Electrocatalysis for Hydrogen Energy

10.1142/q0342 ◽  
2022 ◽  
Qingsheng Gao ◽  
Lichun Yang
Langmuir ◽  
2021 ◽  
Vol 37 (11) ◽  
pp. 3321-3330
Rong Liang ◽  
Yanwen Wang ◽  
Chao Qin ◽  
Xuehua Chen ◽  
Zhizhen Ye ◽  

2021 ◽  
Vol 12 (1) ◽  
Yongmeng Wu ◽  
Cuibo Liu ◽  
Changhong Wang ◽  
Yifu Yu ◽  
Yanmei Shi ◽  

AbstractElectrocatalytic alkyne semi-hydrogenation to alkenes with water as the hydrogen source using a low-cost noble-metal-free catalyst is highly desirable but challenging because of their over-hydrogenation to undesired alkanes. Here, we propose that an ideal catalyst should have the appropriate binding energy with active atomic hydrogen (H*) from water electrolysis and a weaker adsorption with an alkene, thus promoting alkyne semi-hydrogenation and avoiding over-hydrogenation. So, surface sulfur-doped and -adsorbed low-coordinated copper nanowire sponges are designedly synthesized via in situ electroreduction of copper sulfide and enable electrocatalytic alkyne semi-hydrogenation with over 99% selectivity using water as the hydrogen source, outperforming a copper counterpart without surface sulfur. Sulfur anion-hydrated cation (S2−-K+(H2O)n) networks between the surface adsorbed S2− and K+ in the KOH electrolyte boost the production of active H* from water electrolysis. And the trace doping of sulfur weakens the alkene adsorption, avoiding over-hydrogenation. Our catalyst also shows wide substrate scopes, up to 99% alkenes selectivity, good reducible groups compatibility, and easily synthesized deuterated alkenes, highlighting the promising potential of this method.

Junjie Zhu ◽  
Jónína B. Guđmundsdóttir ◽  
Ragnar Strandbakke ◽  
Kevin G. Both ◽  
Thomas Aarholt ◽  

Nano Research ◽  
2021 ◽  
Xingyang Wu ◽  
Yi Zeng ◽  
Hangchen Liu ◽  
Jiaqing Zhao ◽  
Tierui Zhang ◽  

Lunlun Gong ◽  
Peili Zhang ◽  
Guoquan Liu ◽  
Yu Shan ◽  
Mei Wang

Modification of the surface of semiconductor-based photoelectrodes with molecular redox catalysts gives a way to realize atom-efficient catalysis for photoelectrochemical (PEC) H2 and O2 evolution. However, the diversity of immobilized...

2021 ◽  
Haijiao Lu ◽  
Julie Tournet ◽  
Kamran Dastafkan ◽  
Yun Liu ◽  
Yun Hau Ng ◽  

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