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Preparation and photocatalytic application of a S, Nd double doped nano-TiO2 photocatalyst

机译：S，Nd双掺杂纳米TiO2光催化剂的制备和光催化应用

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摘要

Nowadays, water pollution is getting more and more severe in society, and recently the rational use of photocatalytic technology to treat sewage has become a hot spot for research. Because of the low-cost and environmental friendliness of nano-TiO2, it has attracted widespread attention. In this paper, we dope sulfur and neodymium into nano-titanium dioxide via a sol-gel method. The synthesized S, Nd-codoped-TiO2 was characterized via transmission electron microscopy, scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, EDS and N-2 adsorption-desorption isotherms. Then the real-life dye reactive red (X-3B) was used as the target degradant to compare the levels of practicality of single-doped and double-doped photocatalysts. The results showed that the photocatalytic activity of S, Nd-codoped-TiO2 was significantly higher than that of Nd-TiO2. The double-doped photocatalyst was transformed from anatase to rutile, and the bandgap was reduced considerably. The responding ability to visible light also increased, so S, Nd-codoped-TiO2 has obvious advantages and has better degradation efficiency for the target degradation products. Under xenon lamp irradiation and pH = 4 conditions, the degradation of reactive red using the new catalyst reached 93.2%. The new catalyst has high practicality and also indicates a new direction for wastewater treatment.
机译：如今，水污染在社会中越来越严重，最近，光催化技术来治疗污水的合理用途已成为研究的热点。由于纳米TiO2的低成本和环境友好性，它引起了广泛的关注。本文通过溶胶 - 凝胶法将硫和钕掺入纳米二氧化钛中。通过透射电子显微镜，扫描电子显微镜，X射线光电子体光谱，EDS和N-2吸附 - 解吸等温，其特征在于，通过透射电子显微镜，扫描电子显微镜，X射线光电子能谱，EDS和N-2吸附 - 解吸等温。然后使用现实染料反应性红色（X-3B）作为靶降解剂，以比较单掺杂和双掺杂光催化剂的实用性水平。结果表明，S，Nd-Codoped-TiO2的光催化活性显着高于Nd-TiO2。将双掺杂的光催化剂从锐钛矿转化为金红石，并且带隙显着降低。可见光的响应能力也增加，所以S，ND-Codoped-TiO2具有明显的优点，并具有更好的目标降解产品的降解效率。在氙灯照射和pH = 4条件下，使用新催化剂的反应性红色的降解达到93.2％。新型催化剂具有很高的实用性，并且还表明了废水处理的新方向。

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  • 来源
    《RSC Advances》 |2018年第64期|共9页
  • 作者

    Wang Shuo; Bai Liming; Ao Xinling;

  • 作者单位

    Qiqihar Univ Coll Chem &

    Chem Engn Qiqihar 161006 Heilongjiang Peoples R China;

    Qiqihar Univ Coll Chem &

    Chem Engn Qiqihar 161006 Heilongjiang Peoples R China;

    Qiqihar Univ Coll Chem &

    Chem Engn Qiqihar 161006 Heilongjiang Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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