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首页> 外文期刊>Applied Surface Science >Synthesis and characterization of TiO_2/Fe_2O_3 core-shell nanocomposition film and their photoelectrochemical property
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Synthesis and characterization of TiO_2/Fe_2O_3 core-shell nanocomposition film and their photoelectrochemical property

机译：TiO_2 / Fe_2O_3核壳纳米复合膜的合成，表征及其光电化学性能

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摘要

TiO_2/Fe_2O_3 core-shell nanocomposition film has been fabricated via two-step method. TiO_2 nanorod arrays are synthesized by a facile hydrothermal method, and followed by Fe_2O_3 nanopartides deposited on TiO_2 nanorod arrays through an ordinary chemical bath deposition. The phase structures, morphologies, particle size, chemical compositions of the composites have been characterized by X-ray diffraction (XRD), field emission scanning electron microscope (FESEM) and ultraviolet-visible (UV-vis) spectropho-tometer. The results confirm that Fe_2O_3 nanopartides of mean size ca. 10 nm coated on the surface of TiO_2 NRs. After depositing Fe_2O_3, UV-vis absorption property is induces the shift to the visible-light range, the annealing temperature of 600℃ is the best condition for UV-vis absorption property of TiO_2/Fe_2O_3 nanocomposite film, and increasing Fe content, optical activity are enhanced one by one. The photoelectrochemical (PEC) performances of the as-prepared composite nanorods are determined by measuring the photo-generated currents under illumination of UV-vis light. The TiO_2 NRs modified by Fe_2O_3 show the photocurrent value of 1.36 mA/cm~2 at 0 V vs Ag/AgCl, which is higher than those of unmodified TiO_2 NRs.
机译：通过两步法制备了TiO_2 / Fe_2O_3核壳纳米复合膜。 TiO_2纳米棒阵列是通过简便的水热法合成的，然后通过普通的化学浴沉积法将Fe_2O_3纳米粒子沉积在TiO_2纳米棒阵列上。通过X射线衍射（XRD），场发射扫描电子显微镜（FESEM）和紫外可见（UV-vis）分光光度计对复合材料的相结构，形貌，粒度，化学组成进行了表征。结果证实，平均尺寸为ca的Fe_2O_3纳米粒子。在TiO_2 NRs的表面上涂覆10 nm。沉积Fe_2O_3后，紫外可见吸收性能引起向可见光范围的转移，退火温度为600℃是TiO_2 / Fe_2O_3纳米复合膜紫外可见吸收性能的最佳条件，并增加了Fe含量，光学活性一一增强。通过在紫外可见光照射下测量光生电流来确定所制备的复合纳米棒的光电化学（PEC）性能。 Fe_2O_3改性的TiO_2 NRs在0 V时的光电流值为1.36 mA / cm〜2，相对于Ag / AgCl，高于未改性的TiO_2 NRs。

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  • 来源
    《Applied Surface Science》 |2011年第21期|p.8778-8783|共6页
  • 作者

    Hui Zhao; Wuyou Fu; Haibin Yang; Yang Xu; Wenyan Zhao; Yanyan Zhang; Hui Chen; Qiang Jing; Xuefeng Qi; Jing Cao; Xiaoming Zhou; Yixing Li;

  • 作者单位

    State Key Laboratory of Superhard Materials, Jilin University,2699 Qianjin Street, Changchun 130012, PR China;

    State Key Laboratory of Superhard Materials, Jilin University,2699 Qianjin Street, Changchun 130012, PR China;

    State Key Laboratory of Superhard Materials, Jilin University,2699 Qianjin Street, Changchun 130012, PR China;

    State Key Laboratory of Superhard Materials, Jilin University,2699 Qianjin Street, Changchun 130012, PR China;

    State Key Laboratory of Superhard Materials, Jilin University,2699 Qianjin Street, Changchun 130012, PR China;

    State Key Laboratory of Superhard Materials, Jilin University,2699 Qianjin Street, Changchun 130012, PR China;

    State Key Laboratory of Superhard Materials, Jilin University,2699 Qianjin Street, Changchun 130012, PR China;

    State Key Laboratory of Superhard Materials, Jilin University,2699 Qianjin Street, Changchun 130012, PR China;

    State Key Laboratory of Superhard Materials, Jilin University,2699 Qianjin Street, Changchun 130012, PR China;

    State Key Laboratory of Superhard Materials, Jilin University,2699 Qianjin Street, Changchun 130012, PR China;

    State Key Laboratory of Superhard Materials, Jilin University,2699 Qianjin Street, Changchun 130012, PR China;

    State Key Laboratory of Superhard Materials, Jilin University,2699 Qianjin Street, Changchun 130012, PR China;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    tio_2 nanorod array; fe_2o_3; nanocomposition film; photoelectrochemical property;

    机译：tio_2纳米棒阵列;fe_2o_3;纳米复合膜;光电化学性能;
  • 入库时间 2022-08-18 03:07:07

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