Photocatalytic activities of AgSbO3 under visible light irradiation
Photocatalytic activities of AgSbO3 under visible light irradiation
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DOI：
10.1016/j.cattod.2007.10.094
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发表时间：
2008-02-29
期刊：
影响因子：
5.3
通讯作者：
Ye, Jinhua
中科院分区：
文献类型：
--
作者：
Kako, Tetsuya;Kikugawa, Naoki;Ye, Jinhua
采用传统的固相反应法制备了一种新型可见光催化剂AgSbO 3。该氧化物属于焦绿石-烧绿石结构，可以吸收波长高达约480 nm的可见光。从能带结构计算中发现，价带顶由Ag 4d和O 2 p杂化轨道组成，导带底主要由Ag 5s和Sb 5s轨道组成。光催化活性进行了评价使用O-2从硝酸银水溶液和分解的气态2-丙醇在可见光照射下。发现AgSbO_3在可见光照射下具有比WO_3更高的析氧活性，异丙醇可被AgSbO_3矿化。(c)2007 Elsevier B. V.保留所有权利。
A novel visible light sensitive photocatalyst, AgSbO3 was prepared by a conventional solid-state reaction method. This oxide belonging to a cubic-pyrochlore structure can absorb visible light with wavelength up to about 480 nm. From the band structure calculation, we found that the top of the valence band consists of the hybridized Ag 4d and O 2p orbitals and the bottom of the conduction band mainly consists of the Ag 5s and the Sb 5s orbitals. Photocatalytic activities were evaluated using O-2 evolution from an aqueous silver nitrate solution and decomposition of gaseous 2-propanol under visible light irradiation. We found that AgSbO3 shows a higher O-2 evolution activity than WO3 and 2-propanol call be mineralized by the AgSbO3 photocatalysis under visible light irradiation. (c) 2007 Elsevier B.V. All rights reserved.