负载型AgBr/CaWO4催化剂的制备及其可见光催化活性

doi:10.7517/j.issn.1674-0475.2010.05.368

影像科学与光化学 ›› 2010, Vol. 28 ›› Issue (5): 368-375.DOI: 10.7517/j.issn.1674-0475.2010.05.368

负载型AgBr/CaWO₄催化剂的制备及其可见光催化活性

林海莉, 曹静, 罗邦德, 鞠廷勇, 陈士夫

淮北师范大学, 化学与材料科学学院, 安徽, 淮北, 235000

收稿日期:2010-03-25 修回日期:2010-05-11 出版日期:2010-09-23 发布日期:2010-09-23
通讯作者: 曹静,E-mail:caojing@mail.ipc.ac.cn.
基金资助:
国家自然科学基金(20973071);安徽省教育厅自然科学基金(KJ2008B100ZC);安徽省“含能材料”省级重点实验室科研基金(KLEM2009013)资助项目

Preparation and Visible Light Photocatalytic Activity of Supported AgBr/CaWO₄ Catalyst

LIN Hai-li, CAO Jing, LUO Bang-de, JU Ting-yong, CHEN Shi-fu

School of Chemistry and Material Science, Huaibei Normal University, Huaibei 235000, Anhui, P. R. China

Received:2010-03-25 Revised:2010-05-11 Online:2010-09-23 Published:2010-09-23

摘要/Abstract

摘要： 采用化学取代的方式将AgBr负载到Ca WO₄载体上形成新型的AgBr/Ca WO₄复合结构光催化剂.利用XRD、SEM和UV-Vis对AgBr/Ca WO₄催化剂进行了表征.在可见光条件下(500 W、λ>420 nm)研究了AgBr的负载量、催化剂用量对甲基橙(MO)溶液的催化降解性能.结果表明,AgBr/Ca WO₄在可见光下表现出良好的催化活性,甲基橙溶液的降解遵从假一级动力学方程.AgBr的负载量和催化剂用量分别增加时,AgBr/Ca WO₄催化剂对甲基橙的催化活性增强,均趋向于最大值.

关键词: 可见光催化, 甲基橙, AgBr/CaWO₄光催化剂

Abstract: Novel AgBr/CaWO₄ composite catalyst was synthesized by loading AgBr on CaWO₄ substrate via ion exchange method.AgBr/CaWO₄ was characterized by XRD,SEM and UV-Vis technology.The effect of loaded amount of AgBr and AgBr/CaWO₄ amount on the degradation efficiency of methyl orange(MO) was studied under visible light irradiation condition(500 W,λ>;420 nm).The results showed that AgBr/CaWO₄ displayed good photocatalytic activity and the degradation process of MO solution obeyed the pseudo-first-order kinetics equation.The photocatalytic activity of AgBr/CaWO₄ for MO increased and tended to a maximal value with increasing the AgBr loaded amount,as well as AgBr/CaWO₄ amount.

Key words: visible light photocatalysis, methyl orange, AgBr/CaWO₄ photocatalyst

中图分类号:

林海莉, 曹静, 罗邦德, 鞠廷勇, 陈士夫. 负载型AgBr/CaWO₄催化剂的制备及其可见光催化活性[J]. 影像科学与光化学, 2010, 28(5): 368-375.

LIN Hai-li, CAO Jing, LUO Bang-de, JU Ting-yong, CHEN Shi-fu. Preparation and Visible Light Photocatalytic Activity of Supported AgBr/CaWO₄ Catalyst[J]. Imaging Science and Photochemistry, 2010, 28(5): 368-375.

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负载型AgBr/CaWO₄催化剂的制备及其可见光催化活性

Preparation and Visible Light Photocatalytic Activity of Supported AgBr/CaWO₄ Catalyst

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