| AgBr/TiO_2复合催化剂:双注法制备及其可见光催化性能 |
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| 引用本文： | 曹静,林海莉,贾丽,陈士夫.AgBr/TiO_2复合催化剂:双注法制备及其可见光催化性能[J].影像科学与光化学,2009,27(6):462-468. |
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| 作者姓名： | 曹静 林海莉 贾丽 陈士夫 |
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| 作者单位： | 淮北煤炭师范学院,化学与材料科学学院,安徽,淮北,235000 |
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| 基金项目： | 国家自然科学基金，安徽省"含能材料"省级重点实验室科研基金 |
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| 摘 要： | 以TiO2为载体,采用双注法合成了AgBr/TiO2复合光催化剂.利用X射线衍射仪(XRD)、紫外可见分光光度计(UV-Vis)和扫描电子显微镜(SEM)对AgBr/TiO2的结构、光吸收、形貌进行了表征.研究了AgBr/TiO2在可见光下对甲基橙和丁基罗丹明B的光催化活性.结果表明,与TiO2相比,AgBr/TiO2的光吸收范围拓展到400—600nm波段,并且随着AgBr负载量的增加,AgBr/TiO2的可见光吸收强度增强;当AgBr与TiO2的摩尔比为0.25时,AgBr/TiO2具有最大催化活性;在相同条件下,AgBr/TiO2对丁基罗丹明B的降解效果优于甲基橙.
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| 关 键 词： | AgBr/TiO2 双注法 可见光催化性能 甲基橙 |
AgBr/TiO2 Composite Catalyst: Preparation by Double-Jet Method and Visible Light Photocatalytic Property |
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| CAO Jing,LIN Hai-li,JIA Li,CHEN Shi-fu.AgBr/TiO2 Composite Catalyst: Preparation by Double-Jet Method and Visible Light Photocatalytic Property[J].Imaging Science and Photochemistry,2009,27(6):462-468. |
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| Authors: | CAO Jing LIN Hai-li JIA Li CHEN Shi-fu |
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| Abstract: | AgBr/TiO_2 composite photocatalyst was prepared by double-jet method using TiO_2 as sub-strate. The structure, light absorption and microscopy of AgBr/TiO_2 were respectively measured by X-ray diffraction (XRD), ultraviolet visible spectroscopy (UV-Vis) and scanning electron mi-croscopy (SEM). The photocatalytic activity of AgBr/TiO_2 for degradation of methyl orange (MO) and butyl rhodamine B (b-RhB) was studied under visible light irradiation. The results showed that the light absorption of AgBr/TiO_2 was broadened to 400-600 nm compared to TiO_2. With increas-ing the content of AgBr in AgBr/TiO_2, the light absorption intensity increased. AgBr/TiO_2 showed maximal photocatalytic activity when the molar ratio of AgBr to TiO_2 was 0.25. In addition, degra-dation efficiency of b-RhB with AgBr/TiO_2was higher than that of MO under the same condition. |
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| Keywords: | AgBr/TiO2 |
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