首页|Unraveling the role of NiSnPH@OOH/CC perovskite hydroxide for efficient electrocatalytic oxidation of methanol to formate

Unraveling the role of NiSnPH@OOH/CC perovskite hydroxide for efficient electrocatalytic oxidation of methanol to formate

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The sluggish kinetics of oxygen evolution reaction(OER)is the key tailback for hydrogen production from the water electrolysis.Masking OER with thermodynamically auspicious methanol oxidation reaction(MOR)can significantly boost the H2 and value-added products production.However,it is currently challenging to achieve a synergistic manipulation of product selectivity and performance for MOR electrocatalyst.Herein,we report NiSnPH@OOH/CC(CC=carbon cloth)perovskite hydroxide nanosphere as an efficient MOR electrocatalyst with high activity,stability,and selectivity towards methanol oxidation to formate.A surface amorphous layer of defect rich NiOOH was generated in operando by selective Sn leaching with stable perovskite hydroxide bulk structure,which mitigates the oxidative power and optimizes the local coordination environment of the active NiOOH sites.In situ Raman combined with electrochemical studies further confirm the key active species,NiOOH,generated in operando enhance the MOR and blocking the over oxidation of methanol to CO2.As a result,NiSnPH@OOH/CC effectively masks the OER and attains＞99％selectivity with 100％Faradic efficiency for methanol-to-formate.The results of this study show the advances of NiSnPH@OOH/CC as an efficient electrocatalyst for MOR and also suggest its potential applications for various small organic molecules oxidation.

perovskite hydroxidesmall organic moleculesnickel oxy(hydroxide)value-added productsmethanol oxidation reaction

Jing Shao、Yusheng Fang、Xiaobing Wu、Muhammad Imran Abdullah、Youkun Tao

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College of Chemistry and Environmental Engineering,Shenzhen University,Shenzhen 518060,China

School of Science,Harbin Institute of Technology,Shenzhen 518055,China

Shenzhen Government's Plan of Science and TechnologyShenzhen Government's Plan of Science and TechnologyGuangdong Basic and Applied Basic Research FoundationFeatured Innovation Project of Colleges and Universities of Guangdong ProvinceInnovation Team Project of Guangdong Colleges and UniversitiesNational Natural Science Foundation of ChinaInstrumental Analysis Center of Shenzhen University(Xili campus)Electron Microscopy Centre of Shenzhen University

20220804193203001GXWD202208111640460022021A15150107352021KTSCX3652021KCXTD00652072247

2024

10.1007/s12274-023-6078-z

纳米研究(英文版)

纳米研究(英文版)

CSTPCD
ISSN：
年,卷(期)：2024.17(4)
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