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首页> 外文期刊>Applied Surface Science >Fabrication, characterization and photoelectrochemical properties of Fe_2O_3 modified TiO_2 nanotube arrays
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Fabrication, characterization and photoelectrochemical properties of Fe_2O_3 modified TiO_2 nanotube arrays

机译：Fe_2O_3修饰的TiO_2纳米管阵列的制备，表征及光电化学性能

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摘要

TiO_2 nanotube (NT) arrays modified by Fe_2O_3 with high sensibility in the visible spectrum were first prepared by annealing anodic titania NTs pre-loaded with Fe(OH)_3 which was uniformly clung to the titania NTs using sequential chemical bath deposition (S-CBD). The photoelectrochemical performances of the as-prepared composite nanotubes were determined by measuring the photo-generated currents and voltages under illumination of UV-vis light. The titania NTs modified by Fe_2O_3 showed higher photopotential and photocurrent values than those of unmodified titania NTs. The enhanced photoelectrochemical behaviors can be attributed to the modified Fe_2O_3 which increases the probability of charge-carrier separation and extends the range of the TiO_2 photoresponse from ultraviolet (UV) to visible region due to the low band gap of 2.2 eV of Fe_2O_3.
机译：Fe_2O_3修饰的TiO_2纳米管（NT）阵列在可见光谱中具有高灵敏度，首先通过使用顺序化学浴沉积（S-CBD）对预负载有Fe（OH）_3的阳极二氧化钛NT进行退火来制备，该Fe（OH）_3均匀地附着在二氧化钛NTs上）。通过在紫外可见光照射下测量光生电流和电压来确定所制备的复合纳米管的光电化学性能。 Fe_2O_3修饰的二氧化钛NTs的光势和光电流值高于未修饰的二氧化钛NTs。增强的光电化学行为可以归因于改性的Fe_2O_3，由于Fe_2O_3的2.2 eV的低带隙，它增加了电荷载流子分离的可能性，并将TiO_2光响应的范围从紫外线（UV）扩展到可见区。

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  • 来源
    《Applied Surface Science》 |2009年第16期|7385-7388|共4页
  • 作者

    Shuyun Kuang; Lixia Yang; Shenlian Luo; Qingyun Cai;

  • 作者单位

    State Key Laboratory of Chemo/Biosensing and Chemometrics, Department of Chemistry, Hunan University, Changsha 410082, People's Republic of China;

    State Key Laboratory of Chemo/Biosensing and Chemometrics, Department of Chemistry, Hunan University, Changsha 410082, People's Republic of China;

    State Key Laboratory of Chemo/Biosensing and Chemometrics, Department of Chemistry, Hunan University, Changsha 410082, People's Republic of China;

    State Key Laboratory of Chemo/Biosensing and Chemometrics, Department of Chemistry, Hunan University, Changsha 410082, People's Republic of China;

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  • 正文语种 eng
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  • 关键词

    TiO_2 nanotube array; Fe_2O_3; visible light; water splitting; photocatalyst;

    机译：TiO_2纳米管阵列;Fe_2O_3;可见光;水分解光触媒;

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