Citation: 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[J]. Acta Physico-Chimica Sinica, ;2015, 31(2): 302-308. doi: 10.3866/PKU.WHXB201412031 shu

Preparation of Pt/TiO₂ Nanofibers and Their Electrocatalytic Activity towards Methanol Oxidation

1.
College of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China

Received Date: 18 September 2014
Available Online: 3 December 2014
Fund Project: 国家重点基础研究发展规划项目(973) (2013CB932902) (973) (2013CB932902) 国家自然科学基金(21173042) (21173042) 江苏省科技成果转化专项基金(BA2014069) (BA2014069)江苏省工业支撑项目(BE20130118)资助 (BE20130118)

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.
- Electrospinning,
- TiO₂ nanofiber,
- Pt nanoparticle,
- Methanol,
- Catalytic oxidation
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Preparation of Pt/TiO2 Nanofibers and Their Electrocatalytic Activity towards Methanol Oxidation

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Preparation of Pt/TiO₂ Nanofibers and Their Electrocatalytic Activity towards Methanol Oxidation