Bi缺陷型Bi<sub>2</sub>WO<sub>6</sub>催化剂的制备及可见光降解甲苯的性能研究

朱瑜瑜, 韩粉女, 于凉云, 张荣成, 许琦

doi:10.19817/j.cnki.issn1006-3536.2022.03.045

化工新型材料 >

2022 , Vol. 50 >Issue 3: 220 - 225

DOI: https://doi.org/10.19817/j.cnki.issn1006-3536.2022.03.045

科学研究

Bi缺陷型Bi₂WO₆催化剂的制备及可见光降解甲苯的性能研究

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1.常州大学石油化工学院,常州213100;
2.盐城工学院化学化工学院,盐城224051;
3.北京工商大学,北京100048;
4.连云港职业技术学院,连云港222006

朱瑜瑜(1995-),女,硕士研究生,主要从事半导体光催化剂的研究,E-mail:841220442@qq.com。

收稿日期: 2020-12-01

修回日期: 2022-01-12

网络出版日期: 2022-03-29

基金资助

国家自然科学基金(21802119、21906140)

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Preparation of Bi-deficient Bi₂WO₆ photocatalyst and its degradation performance of toluene under visible light

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1. School of Petrochemical Engineering,Changzhou University,Changzhou 213100;
2. School of Chemistry and Chemical Engineering,Yancheng Institute of Technology,Yancheng 224051;
3. Beijing Technology and Business University,Beijing 100048;
4. Lianyungang Technical College,Lianyungang 222006

Received date: 2020-12-01

Revised date: 2022-01-12

Online published: 2022-03-29

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摘要

利用不同浓度的H₂SO₄对水热法制备的Bi₂WO₆进行处理,通过H₂SO₄的腐蚀作用制备具有Bi缺陷型的Bi₂WO₆。探究了催化剂在可见光下对甲苯的降解效果,结果表明,相比于纯Bi₂WO₆,经1mol/L H₂SO₄处理的Bi₂WO₆表现出更好的光催化降解效果,在可见光下照射180min后对甲苯降解率达到82%。这主要是因为Bi缺陷型Bi₂WO₆在H₂SO₄强质子化能力下周围有大量的质子化—OH基团,能有效捕获光生电子,从而提高电子-空穴的分离效率。

关键词： 缺陷; Bi₂WO₆; 光催化; 甲苯

本文引用格式

朱瑜瑜, 韩粉女, 于凉云, 张荣成, 许琦 . Bi缺陷型Bi₂WO₆催化剂的制备及可见光降解甲苯的性能研究[J]. 化工新型材料, 2022 , 50(3) : 220 -225 . DOI: 10.19817/j.cnki.issn1006-3536.2022.03.045

Abstract

Bi₂WO₆ prepared by hydrothermal method were treated by H₂SO₄ with different concentrations.And Bi₂WO₆ with Bi defect was synthesized through the corrosion of H₂SO₄.The degradation activity of the catalyst to toluene was explored under visible light.The results showed that Bi₂WO₆ treated with 1M H₂SO₄ showed better photocatalytic degradation effect than pure Bi₂WO₆,and the degradation rate can reached 82% in 180min under visible light.This is mainly because Bi-deficient Bi₂WO₆ has a large number of protonated —OH groups around it under the strong protonation force of H₂SO₄,which can effectively capture photogenerated electrons and improve the separation efficiency of electron-interaction.

Key words： defect; Bi₂WO₆; photocatalysis; toluene

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