负载型AgBr/CaWO4催化剂的制备及其可见光催化活性

影像科学与光化学 , 2010, 28(5): 368-375.

负载型AgBr/CaWO4催化剂的制备及其可见光催化活性

林海莉 ^1, , 曹静 ^2, , 罗邦德 ^3, , 鞠廷勇 ^4, , 陈士夫 ^5,

1.淮北师范大学,化学与材料科学学院,安徽,淮北,235000

2.淮北师范大学,化学与材料科学学院,安徽,淮北,235000

3.淮北师范大学,化学与材料科学学院,安徽,淮北,235000

4.淮北师范大学,化学与材料科学学院,安徽,淮北,235000

5.淮北师范大学,化学与材料科学学院,安徽,淮北,235000

基金项目: 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)

关键词：可见光催化 , 甲基橙 , AgBr/CaWO4光催化剂

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

采用化学取代的方式将AgBr负载到CaWO4载体上形成新型的AgBr/CaWO4复合结构光催化剂.利用XRD、SEM和UV-Vis对AgBr/CaWO4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/CaWO4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/CaWO4催化剂对甲基橙的催化活性增强,均趋向于最大值.

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