CoOx nanoparticle anchored on sulfonated-graphite as efficient water oxidation catalyst

被引：60

作者：

Guan, Jingqi ^{[1
]}

Ding, Chunmei ^{[1
]}

Chen, Ruotian ^{[1
]}

Huang, Baokun ^{[1
]}

Zhang, Xianwen ^{[1
]}

Fan, Fengtao ^{[1
]}

Zhang, Fuxiang ^{[1
]}

Li, Can ^{[1
]}

机构：

[1] Chinese Acad Sci, Dalian Natl Lab Clean Energy, Dalian Inst Chem Phys, State Key Lab Catalysis,iChEM, Dalian 116023, Peoples R China

来源：

CHEMICAL SCIENCE | 2017年 / 8卷 / 09期

关键词：

HIGHLY EFFICIENT; PHOTOSYSTEM-II; HYDROGEN-PRODUCTION; RECENT PROGRESS; VISIBLE-LIGHT; COBALT; OXIDE; PHOTOCATALYST; PHOTOANODES; CHALLENGES;

D O I：

10.1039/c7sc01756a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Development of efficient, robust and earth-abundant water oxidation catalysts (WOCs) is extremely desirable for water splitting by electrolysis or photocatalysis. Herein, we report cobalt oxide nanoparticles anchored on the surface of sulfonated graphite (denoted as "CoOx@G-Ph-SN") to exhibit unexpectedly efficient water oxidation activity with a turnover frequency (TOF) of 1.2 s(-1); two or three orders of magnitude higher than most cobalt-based oxide WOCs reported so far. The CoOx@G-Ph-SN nanocomposite can be easily prepared by a soft hydrothermal route to have an average CoOx size below 2 nm. Additionally, the loading of CoOx@G-Ph-SN catalyst on the surface of a BiVO4 or Fe2O3 photoanode can boost remarkably the photoanode currents for robust photocatalytic water oxidation under visible light irradiation. Its excellent activity and photochemical stability for water oxidation suggest that this ultrasmall cobalt-based composite is a promising candidate for solar fuel production.

引用

页码：6111 / 6116

页数：6

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