Microwave-assisted solvothermal preparation of nitrogen and sulfur co-doped reduced graphene oxide and graphene quantum dots hybrids for highly efficient oxygen reduction

被引：78

作者：

Luo, Zhimin ^{[1
]}

Yang, Dongliang ^{[1
]}

Qi, Guangqin ^{[1
]}

Shang, Jingzhi ^{[3
]}

Yang, Huanping ^{[4
]}

Wang, Yanlong ^{[3
]}

Yuwen, Lihui ^{[1
]}

Yu, Ting ^{[3
]}

Huang, Wei ^{[1
,2
]}

Wang, Lianhui ^{[1
]}

机构：

[1] Nanjing Univ Posts & Telecommun, Jiangsu Key Lab Organ Elect & Informat Displays, Inst Adv Mat, Nanjing 210023, Jiangsu, Peoples R China

[2] Nanjing Tech Univ, Inst Adv Mat, Jiangsu Singapore Joint Res Ctr Organ Bioelect &, Nanjing 211816, Jiangsu, Peoples R China

[3] Nanyang Technol Univ, Div Phys & Appl Phys, Sch Phys & Math Sci, Singapore 637371, Singapore

[4] Zhejiang Univ Sci & Technol, Dept Sci, Hangzhou 310023, Zhejiang, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2014年 / 2卷 / 48期

基金：

中国国家自然科学基金; 新加坡国家研究基金会;

关键词：

METAL-FREE ELECTROCATALYST; CARBON NANOTUBES; ELECTROCHEMICAL AVENUE; FUNCTIONAL-GROUPS; CATALYST SUPPORT; FUEL-CELLS; NANOCRYSTALS; PERFORMANCE; ELECTRODE; POLYMER;

D O I：

10.1039/c4ta05096g

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A facile solvothermal method assisted by microwave irradiation was developed for preparing nitrogen and sulfur co-doped reduced graphene oxide functionalized with fluorescent graphene quantum dots (N,S-RGO/GQDs). Graphene quantum dots (GQDs) show high fluorescence and excitation-dependent fluorescent properties. The resultant N, S-RGO/GQDs hybrids as a kind of metal-free electrocatalyst were demonstrated to have good catalytic properties with long-term operational stability and tolerance to the crossover effects of methanol for oxygen reduction via a four-electron pathway in alkaline solution. This research not only develops a low-cost, economic and scalable approach for preparing a metal-free electrocatalyst for the oxygen reduction reaction (ORR), but also produces nitrogen and sulfur co-doped graphene quantum dots (N,S-GQDs) with high fluorescent characteristics.

引用

页码：20605 / 20611

页数：7

共 44 条

[41] Wet chemical synthesis of nitrogen-doped graphene towards oxygen reduction electrocatalysts without high-temperateure pyrolysis [J].