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Preparation of Ti~(3+)/N-co-doped TiO_2 by one-step hydrothermal synthesis method with high photocatalytic degradation performance under visible light

机译:可见光下光催化降解性能的一步水热合成法制备Ti〜(3 +)/ N-掺杂TiO_2

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摘要

Ti~(3+)/N-co-doped TiO_2 was successfully synthesized in situ by one-step hydrothermal method using tetrabutyl titanate (TBOT) as the titanium source and hydrazine hydrate as the reducing agent and nitrogen source. Afterward, the microstructure and physicochemical properties of the catalysts were characterized by transmission electron microscopy, X-ray diffraction, Raman spec-troscopy, X-ray photoelectron spectroscopy, UV-vis diffuse reflectance spectroscopy, and photoluminescence spectroscopy. Results indicated that nitrogen was effectively doped into the lattice of TiO_2 and Ti~(3+) was stably presented in the prepared TiO_2, which reduced the band-gap TiO_2 (2.96-2.75 eV) and enhanced photo-induced charge separation efficiency under visible light. In addition, the photocatalytic activity was evaluated by degradation of rhodamine B under xenon lamp with 420 nm filter. With the amount of hydrazine hydrate increased, the photocatalytic degradation performance of the sample increased first and then decreased. When the volume ratio of hydrazine hydrate to TBOT was 1:5, the sample showed the best photocatalytic performance.
机译:使用四丁基钛酸盐(TBOT)原位成功地合成Ti〜(3 +)/ n-掺杂TiO_2作为钛源和肼水合物作为还原剂和氮源。之后,通过透射电子显微镜,X射线衍射,拉曼规格,X射线光电子体光谱,UV-Vis弥漫反射光谱和光致发光光谱,表征催化剂的微观结构和物理化学性质。结果表明,氮气有效地掺杂到TiO_2和Ti〜(3+)的晶格中,稳定地呈现在制备的TiO_2中,其降低了带隙TiO_2(2.96-2.75eV)并在可见下提高了光诱导的电荷分离效率光。此外,通过具有420nm过滤器的氙灯下罗丹明B的降解评价光催化活性。随着肼水合物的量增加,样品的光催化降解性能升高,然后降低。当肼水合物与TBOT的体积比为1:5时,样品显示出最佳的光催化性能。

著录项

  • 来源
    《Journal of materials science》 |2021年第18期|22910-22920|共11页
  • 作者单位

    School of Materials Engineering Jinling Institute of Technology Nanjing 211169 China;

    Collaborative Innovation Institute for Nanjing Industry Jinling Institute of Technology Nanjing 211169 China;

    School of Materials Engineering Jinling Institute of Technology Nanjing 211169 China;

    School of Materials Engineering Jinling Institute of Technology Nanjing 211169 China;

    School of Materials Engineering Jinling Institute of Technology Nanjing 211169 China;

    School of Materials Engineering Jinling Institute of Technology Nanjing 211169 China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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