Issue 35, 2018, Issue in Progress
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RSC Advances

Effect of thiophene S on the enhanced ORR electrocatalytic performance of sulfur-doped graphene quantum dot/reduced graphene oxide nanocomposites†

Fei Li,‡a   Lang Sun,‡a   Yi Luo,a   Ming Li,*a   Yongjie Xu,a   Guanghui Hu,a   Xinyu Lia  and  Liang Wang ORCID logo *b  

* Corresponding authors

a College of Science, Guilin University of Technology, Guilin 541004, P. R. China
E-mail: liming928@163.com

b Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, P. R. China
E-mail: wangl@shu.edu.cn

Abstract

In this study, a novel and simple hydrothermal method was developed to synthesize sulfur-doped graphene quantum dots (S-GQDs) with a diameter of 1–6 nm and S-GQD/reduced graphene oxide hybrids. The results indicated that an increase in the sulfur content led to superior ORR electrocatalytic activity. Moreover, it is found that thiophene S plays a significant role in the electrocatalytic activity. In addition, the average electron transfer number depends on the content of thiophene S. It is believed that the proposed synthesis strategy is a general and effective method for designing high-performance metal-free electrocatalytic materials.

Graphical abstract: Effect of thiophene S on the enhanced ORR electrocatalytic performance of sulfur-doped graphene quantum dot/reduced graphene oxide nanocomposites

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Article information

DOI
https://doi.org/10.1039/C8RA02040J
Article type
Paper
Submitted
08 Mar 2018
Accepted
13 May 2018
First published
29 May 2018
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2018,8, 19635-19641

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Effect of thiophene S on the enhanced ORR electrocatalytic performance of sulfur-doped graphene quantum dot/reduced graphene oxide nanocomposites

F. Li, L. Sun, Y. Luo, M. Li, Y. Xu, G. Hu, X. Li and L. Wang, RSC Adv., 2018, 8, 19635 DOI: 10.1039/C8RA02040J

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