Bi9V2ClO18新型光催化剂的制备与光催化活性评价

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赵梅,李平， 汤红艳,王金金

(青岛科技大学 材料科学与工程学院，山东 青岛266042)

摘要： 以BiOCl、Bi2O3、NH4VO3为原材料，采用固相合成法制备了Bi9V2ClO18新型光催化剂，通过XRD、SEM和HRTEM对样品的物相、形貌和结晶质量进行了表征，测试了样品的紫外可见漫反射吸收光谱。结果表明：其吸收边为465 nm，禁带宽度为2.67 eV。采用罗丹明B (RhB)、亚甲基蓝 (MB)为目标污染物，测试了Bi9V2ClO18光催化剂的可见光光催化活性。在可见光下辐射9 h，RhB降解率达82%；可见光下辐射5 h，MB降解率达83%。测试结果表明：所制备Bi9V2ClO18材料是可见光响应型光催化剂，在可见光辐照下对罗丹明B和亚甲基蓝的光降解主要依赖于光催化剂的直接光降解机制。

关键词：光催化剂；Bi9V2ClO18； 罗丹明B； 亚甲基蓝； 可见光响应

中图分类号：O 64文献标志码：A

引用格式：赵梅,李平，汤红艳,等.Bi9V2ClO18新型光催化剂的制备与光催化活性评价\[J\].青岛科技大学学报（自然科学版），2017，38（3）：42-46.

ZHAO Mei, LI Ping, TANG Hongyan,et al.Preparation of Bi9V2ClO18 novel photocatalyst and its photocatalytic acitivity\[J\].Journal of Qingdao University of Science and Technology（Natural Science Edition),2017,38(3)：42-46.

Preparation of Bi9V2ClO18 Novel Photocatalyst and Its Photocatalytic Acitivity

ZHAO Mei, LI Ping, TANG Hongyan, WANG Jinjin

（College of Materials Science and Engineering, Qingdao University of Science and Technology，Qingdao 266042，China）

Abstract: Bi9V2ClO18 novel photocatalyst was prepared using BiOCl, Bi2O3 and NH4VO3 as raw materials by a solid state method. The sample was characterized by XRD, SEM and HRTEM. The ultraviolet-visible diffuse reflection spectrum was achieved and the absorption edge is about 465 nm, Eg is 2.67 eV. Using RhB and MB as the target pollutants, the visible-light-responsed photocatalytic activity of Bi9V2ClO18 was measured. Photodegradation effeciency of RhB was 82% after 9 h; photodegradation effeciency of MB was 83% after 5 h. Bi9V2ClO18 was proved as a novel visible-light-responsed photocatalystand that the photodegradation progress depends on the direct photodegradation mechanism.

Key words: photocatalyst； Bi9V2ClO18； RhB； MB； visible-light-responsed

收稿日期：2016-01-22

基金项目：国家自然科学基金项目（516724145）.

作者简介：赵梅（1974—），女，副教授.

文章编号：16726987（2017）03004205； DOI： 10.16351/j.1672-6987.2017.03.008