凹凸棒/Bi<sub>2</sub>WO<sub>6</sub>光催化复合材料的制备及性能

崔家民; 杨艳青; 靳虎芳; 邓钏; 张卫珂

doi:10.13801/j.cnki.fhclxb.20181203.001

凹凸棒/Bi₂WO₆光催化复合材料的制备及性能

太原理工大学环境科学与工程学院, 太原 030024

基金项目: 山西省高等学校科技创新研究项目（163140105-S）

详细信息

通讯作者:
张卫珂,副教授,硕士生导师,研究方向为纳米材料的合成与应用,E-mail:zhangweike@tyut.edu.cn

中图分类号: TB333
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出版历程
- 收稿日期: 2018-09-02
- 刊出日期: 2019-09-14

Preparation and performance of attapulgite/Bi₂WO₆ photocatalytic composite

College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China

摘要

摘要: 由于Bi₂WO₆半导体具有无毒、强氧化性、强可见光响应等特点，呈现出优异的光催化活性。然而，Bi₂WO₆具有比表面小和吸附能力差的缺点限制了其实际应用。利用凹凸棒黏土的强吸附性，通过调节水热反应温度和时间、凹凸棒黏土与Bi₂WO₆的质量比及前驱体溶液的pH值等条件制备凹凸棒/Bi₂WO₆光催化复合材料，并对其进行XRD、SEM、N₂吸附-解吸和紫外-可见漫反射光谱（UV-vis DRS）等表征测试。研究表明，在180℃水热反应18 h、凹凸棒黏土与Bi₂WO₆的质量比为6%、凹凸棒/Bi₂WO₆光催化复合材料前驱体溶液的初始pH=1时，凹凸棒/Bi₂WO₆光催化复合材料具有3D纳米球状分层结构，且在可见光下对罗丹明B具有较好的光催化性能。
- Bi₂WO₆ /
- 凹凸棒黏土 /
- 复合材料 /
- 水热反应 /
- 光催化
Abstract: The Bi₂WO₆ semiconductor possesses excellent photocatalytic performance due to its nontoxicity, strong oxidizing power and visible-light responsiveness. However, the small specific surface area and poor adsorption capacity limit its practical applications. The taking advantage of strong adsorption abilities of attapulgite clay to prepare attapulgite/Bi₂WO₆ photocatalytic composite by adjusting the temperature and time of hydrothermal reaction, the mass ratio, and the pH value of the precursor solution. The as-prepared photocatalyst was characterized by XRD, SEM, N₂ adsorption-desorption measurements and UV-visible diffused reflectance spectra (UV-vis DRS). The results show that the attapulgite/Bi₂WO₆ photocatalytic composite has 3D nanospheres hierarchical structure and exhibit a better photocatalytic activity for Rhodamine B under visible light while it is prepared under hydrothermal reaction at 180℃ for 18 h, the mass ratio of attapulgite clay to Bi₂WO₆ is 6%, and the initial pH=1 for the precursor solution of attapulgite/Bi₂WO₆ photocatalytic composite.
- Bi₂WO₆ /
- attapulgite clay /
- composite /
- hydrothermal reaction /
- photocatalytic

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