Ru/RuO2 Nanoparticle Composites with N-Doped Reduced Graphene Oxide as Electrocatalysts for Hydrogen and Oxygen Evolution

被引：92

作者：

Gao, Xuyun ^{[1
,2
]}

Chen, Jing ^{[1
]}

Sun, Xuzhuo ^{[1
]}

Wu, Baofan ^{[1
]}

Li, Bo ^{[1
]}

Ning, Zhichao ^{[1
]}

Li, Jun ^{[2
]}

Wang, Ning ^{[2
]}

机构：

[1] Henan Univ Technol, Coll Chem & Chem Engn, Zhengzhou 450001, Peoples R China

[2] Northwest Univ, Coll Chem & Mat Sci, Key Lab Synthet & Nat Funct Mol, Minist Educ, Xian 710069, Peoples R China

来源：

ACS APPLIED NANO MATERIALS | 2020年 / 3卷 / 12期

基金：

中国国家自然科学基金;

关键词：

bifunctional interfaces; Ru/RuO2; nanocomposite; 3D graphene; water splitting; alkaline/acidic solution; EFFICIENT ELECTROCATALYST; BIFUNCTIONAL CATALYST; HIGHLY EFFICIENT; WATER; ALLOY; ELECTROLYSIS; TRANSITION; NANOSHEETS; DESIGN; HYBRID;

D O I：

10.1021/acsanm.0c02739

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Engineering nanocomposites with interfaces was already found to be an efficient method for designing water-splitting catalysts. In this study, a rationally designed 3D Ru/RuO2@N-rGO hierarchical porous heterocatalyst containing abundant interfaces was obtained via a hydrothermal-calcining strategy for the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER). In the synthesis process, polypyrrole helped the self-assembled GO to form a hybrid aerogel network, in situ reducing the Ru salt as reductant and doping graphene as N precursor. CO2, which was in situ produced via the reaction between Na2SO4 and C, could partially or totally oxidize metal Ru to regulate the composition of Ru/RuO2 nanoparticles. Benefiting from the large surface area and a high number of bifunctional active sites coupled interfaces, the as-obtained Ru/RuO2@N-rGO heterostructure catalyst revealed high HER/OER activities in 1.0 M KOH and 0.5 M H2SO4 solutions, respectively. The present work could provide a way to engineer Ru/RuO2 nanoparticles in 3D electrocatalysts to boost HER/OER performances.

引用

页码：12269 / 12277

页数：9

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