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,^ab Zhenghua Tang,*^ac Likai Wang,^a Qiannan Wang,^a Wei Yan,^a Hongyu Yang,^a Shaowei Chen^ad and Changhong Wang*^b

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* 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, California 95064, 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.

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DOI: https://doi.org/10.1039/C6RA16533H
Article type: Paper
Submitted: 27 Jun 2016
Accepted: 16 Sep 2016
First published: 19 Sep 2016

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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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