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載鉑二氧化鈦納米管電極的制備及電催化性能
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TiO2-NTs/Pt Electrodes Prepared by Hydrothermal Method andElectrocatalytic Performance
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    摘要:

    用水熱法在二氧化鈦納米管上負載納米鉑微粒，制備出大比表面積、高表面原子數(shù)的載鉑二氧化鈦納米管電極。 SEM和XRD分析證明納米管上已負載20~30 nm的鉑微粒。循環(huán)伏安測試結(jié)果表明：不含染料的體系中，載鉑二氧化鈦納米管電極在0.13 V處的氧化峰電流密度為Pt片電極的10倍；含染料的體系中，載鉑二氧化鈦納米管電極上對酸性大紅GR的氧化峰電流密度達到Pt片電極上的4.2倍。對酸性大紅GR的降解實驗表明，載鉑二氧化鈦納米管電極催化活性高、降解快速高效

    Abstract:

    Highly ordered TiO2 nanotubes (TiO2-NTs) were grown from Ti substrate. More load sites for specified metal were provided by this nanotube structure. TiO2-NTs/Pt electrodes for electrocatalytic oxidation were prepared through hydrothermal reaction between TiO2 nanotubes and H2PtCl6·6H2O. Characterization of the electrodes by scanning electron microscope (SEM) and X-ray diffraction (XRD) illustrates that Pt nanoparticles with an average size of 20-30 nm are dispersed on the surface or in the pore of TiO2 nanotube. The results of cyclic voltammetry (CV) show that in the system without dyes the current density at the oxidation peak of 0.13 V of TiO2-NTs/Pt electrodes is 9 times greater than that of Pt bulk electrode; while in the system with dyes, the oxidation peak current density of the TiO2-NTs/Pt electrodes to acid scarlet GR is 4.2 times that of Pt bulk electrodes. The results of degradation to acid scarlet GR show that TiO2-NTs/Pt electrodes possess high catalytic activity and high-efficiency degradation ability

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譚 超,李義久,廖強強,程如梅,王作華.載鉑二氧化鈦納米管電極的制備及電催化性能[J].稀有金屬材料與工程,2011,40(3):551~554.[Tan Chao, Li Yijiu, Liao Qiangqiang, Cheng Rumei, Wang Zuohua. TiO2-NTs/Pt Electrodes Prepared by Hydrothermal Method andElectrocatalytic Performance[J]. Rare Metal Materials and Engineering,2011,40(3):551~554.]
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  • 收稿日期:2010-03-21
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