In situ preparation of multi-wall carbon nanotubes/Au composites for oxygen electroreduction

Na Li; Zhenghua Tang; Likai Wang; Qiannan Wang; Wei Yan; Hongyu Yang; Shaowei Chen; Changhong Wang

doi:10.1039/C6RA16533H

In situ preparation of multi-wall carbon nanotubes/Au composites for oxygen electroreduction

Na Li,^a^b Zhenghua Tang,*^a^c Likai Wang,^a Qiannan Wang,^a Wei Yan,^a Hongyu Yang,^a Shaowei Chen^a^d and Changhong Wang*^b

Author affiliations

* Corresponding authors

^a New Energy Research Institute, School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, P. R. China
E-mail: zhht@scut.edu.cn

^b School of Materials and Energy, Guangdong University of Technology, Guangzhou, P. R. China
E-mail: wangchh@gdut.edu.cn

^c Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, China

^d Department of Chemistry and Biochemistry, University of California, 1156 High Street, Santa Cruz, USA

Abstract

Multi-wall carbon nanotubes (CNTs)/Au nanocomposites have been prepared by the in situ reduction approach. The as-prepared hybrid materials were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). The composition of the nanocomposites was fine tuned by varying the mass ratio of Au-to-CNTs. Among a series of samples tested, hybrid materials with a Au/carbon nanotubes (Au/CNTs) ratio = 1 : 2 demonstrated the best activity towards oxygen reduction reaction (ORR), as most positive onset potential, largest kinetic current density, highest amount of electron transfer and lowest H₂O₂ yields were obtained. Notably, the Au/CNTs also exhibited remarkable long-term durability higher than commercial Pt/C.

Supplementary files

Publication details

The article was received on 27 Jun 2016, accepted on 16 Sep 2016 and first published on 19 Sep 2016

Article type: Paper

DOI: 10.1039/C6RA16533H

Citation: RSC Adv., 2016,6, 91209-91215

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In situ preparation of multi-wall carbon nanotubes/Au composites for oxygen electroreduction

N. Li, Z. Tang, L. Wang, Q. Wang, W. Yan, H. Yang, S. Chen and C. Wang, RSC Adv., 2016, 6, 91209
DOI: 10.1039/C6RA16533H
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In situ preparation of multi-wall carbon nanotubes/Au composites for oxygen electroreduction

Abstract

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In situ preparation of multi-wall carbon nanotubes/Au composites for oxygen electroreduction

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