Issue 50, 2016
From the journal:

RSC Advances

Synthesis of hollow PtAg alloy nanospheres with excellent electrocatalytic performances towards methanol and formic acid oxidations†

Fulin Zheng,a   Sin-Yee Luk,a   Tsz-Lung Kwong ORCID logo a  and  Ka-Fu Yung*a  

* Corresponding authors

a Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
E-mail: bckfyung@polyu.edu.hk
Fax: +852 2364 9932
Tel: +852 3400 8863

Abstract

Hollow PtAg alloy nanospheres were synthesized via galvanic replacement reaction between silver nanoparticles and K2PtCl4 at 60 °C. Their morphology, composition and structure were characterized by UV-vis, XRD, TEM, HRTEM, SAED, EDX and XPS. It was found that the shell thickness and roughness could be controlled by varying the amount of Pt precursor solutions. Compared with commercially available Pt black, the PtAg showed higher catalytic activity and higher CO tolerance towards the electro-oxidations of methanol and formic acid, which make them a prominent catalyst for DMFCs and DFAFCs.

Graphical abstract: Synthesis of hollow PtAg alloy nanospheres with excellent electrocatalytic performances towards methanol and formic acid oxidations

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Article information

DOI
https://doi.org/10.1039/C6RA06398E
Article type
Communication
Submitted
10 Mar 2016
Accepted
26 Apr 2016
First published
26 Apr 2016
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2016,6, 44902-44907

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Synthesis of hollow PtAg alloy nanospheres with excellent electrocatalytic performances towards methanol and formic acid oxidations

F. Zheng, S. Luk, T. Kwong and K. Yung, RSC Adv., 2016, 6, 44902 DOI: 10.1039/C6RA06398E

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