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Preparation and characterization of nano-La (S, C)-TiO_2 oriented films by template hydrothermal synthesis

机译：模板水热合成法制备纳米La（S，C）-TiO_2取向薄膜

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摘要

The La (S, C)-TiO_2 oriented films with honeycomb ceramic wafers as carriers were prepared by template hydrothermal synthesis at low temperature. The effects of the hydrothermal reaction temperature, the amount of template agents and the codoping of La and S on the performances of nano-TiO_2 films were studied. The performances of the films were characterized on the XRD, UV-vis, BET, EDS and SEM. The results showed that the TiO_2 films with anatase phase were obtained when hydrothermal reaction temperature was 150 ℃ and the reaction time was 10 h, and the oriented films were obtained when the molar ratio of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) triblock copolymer (PEO-PPO-PEO (P-123)) to Ti was 0.03. The data also revealed that the specific surface area of particles in the film increased from 148 m~2/g to 240 m~2/g, the photocatalytic activity of the oriented film was improved greatly due to the codoping of La and S, and the oriented film could fully decompose methyl orange in water for 3 h.
机译：通过模板水热合成法制备了以蜂窝状陶瓷片为载体的La（S，C）-TiO_2定向薄膜。研究了水热反应温度，模板剂用量以及La和S的共掺杂对纳米TiO_2薄膜性能的影响。在XRD，UV-vis，BET，EDS和SEM上表征了膜的性能。结果表明：水热反应温度为150℃，反应时间为10 h时，可获得具有锐钛矿相的TiO_2薄膜；聚环氧乙烷与聚环氧丙烷的摩尔比为2时，可获得取向膜。 Ti的聚（环氧乙烷）三嵌段共聚物（PEO-PPO-PEO（P-123））为0.03。数据还表明，膜中颗粒的比表面积从148 m〜2 / g增加到240 m〜2 / g，由于La和S的共掺杂，大大提高了取向膜的光催化活性。取向膜可以在水中完全分解甲基橙3小时。

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  • 来源
    《Applied Surface Science》 |2009年第14期|6691-6695|共5页
  • 作者

    Kejing Xu; Guoquan Zhu;

  • 作者单位

    School of Materials Science and Engineering, Shandong University of Technology, No. 12, Zhangzhou Road, Zibo 255049, Shandong Province, PR China;

    School of Materials Science and Engineering, Shandong University of Technology, No. 12, Zhangzhou Road, Zibo 255049, Shandong Province, PR China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    hydrothermal synthesis; titanium dioxide; codoping; template agent;

    机译：水热合成二氧化钛;共掺杂;模板代理;

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