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采用低温水热法成功制备了层状的K4Nb6O17半导体光催化材料。考虑到水热合成的K4Nb6O17表面多羟基(Nb—OH)和端氧(Nb O,Nb—O-)的特点,采用Ag(en)2+配合物前驱体法制备了高度均匀分散的Ag/K4Nb6O17异质结光催化剂,光催化性能评价结果表明,半导体K4Nb6O17表面负载极少量的Ag,其光催化降解甲基橙活性便得到大幅度提高,Ag的最佳负载量为0.5 at%。综合XRD,FTIR,UV-VisDRS,XRF和TEM表征结果,对Ag/K4Nb6O17异质结光催化剂的作用机制进行了较详细地阐述并获得如下结论:(1)K4Nb6O17提供了降解有机染料分子的电子和空穴;(...
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光谱学与光谱分析
ISSN: 1000-0593
CN: 11-2200/O4
Year: 2010
Issue: 10
Volume: 30
Page: 2636-2640
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JCR@2023
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 9
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