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Acta Phys. Chim. Sin.  2015, Vol. 31 Issue (2): 302-308    DOI: 10.3866/PKU.WHXB201412031
ELECTROCHEMISTRY AND NEW ENERGY     
Preparation of Pt/TiO2 Nanofibers and Their Electrocatalytic Activity towards Methanol Oxidation
CHEN Hong, WANG Shi-Xian, ZHAO Wan-Long, ZHANG Neng-Neng, ZHENG Ying-Ping, SUN Yue-Ming
College of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China
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Abstract  

A Pt/TiO2 nanofiber catalyst has been prepared through the combination of an electrospinning technique with a reductive impregnation method. The compositions, morphologies and structures of the samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and energy dispersive spectroscopy (EDS). The results showed that the crystal phase of the TiO2 nanofibers was composed of anatase and rutile TiO2. Pt nanoparticles were found to be uniformly distributed on the surface of the TiO2 nanofibers with an average size of 4.0 nm. The mass fraction of Pt in the Pt/TiO2 nanofiber catalyst was about 20%. The electrocatalytic activities of the samples towards the oxidation of methanol were measured by cyclic voltammetry and chronoamperometry using a three-electrode system in an acidic solution. Compared with Pt/P25 and commercial Pt/C catalysts containing the same quality percentage of Pt nanoparticles, the Pt/TiO2 nanofiber catalyst exhibited higher catalytic activity towards the oxidation of methanol and better stability.



Key wordsElectrospinning      TiO2 nanofiber      Pt nanoparticle      Methanol      Catalytic oxidation     
Received: 18 September 2014      Published: 03 December 2014
MSC2000:  O646  
Fund:  

The project was supported by the National Program on Key Basic Research Project, China (973) (2013CB932902), National Natural Science Foundation of China (21173042), Scientific and Technological Achievements Transformation Special Foundation of Jiangsu Province, China (BA2014069), and Industrial Supporting Project Foundation of Jiangsu Province, China (BE20130118).

Corresponding Authors: ZHENG Ying-Ping, SUN Yue-Ming     E-mail: ypz_99@163.com;sun@seu.edu.cn
Cite this article:

CHEN Hong, WANG Shi-Xian, ZHAO Wan-Long, ZHANG Neng-Neng, ZHENG Ying-Ping, SUN Yue-Ming. Preparation of Pt/TiO2 Nanofibers and Their Electrocatalytic Activity towards Methanol Oxidation. Acta Phys. Chim. Sin., 2015, 31(2): 302-308.

URL:

http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/10.3866/PKU.WHXB201412031     OR     http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/Y2015/V31/I2/302

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