摘要
采用溶胶-凝胶再结合程序升温溶剂热一步法制备了纳米复合光催化材料Ag-H6P2W18O62/TiO2,并采用傅立叶-红外光谱(FT-IR)、等离子原子反射光谱(ICP-AES)、氮气吸附-脱附测定和透射电子显微镜(TEM)等测试方法对Ag-H6P2W18O62/TiO2合成材料的物理化学性质进行了表征。结果表明,复合材料中母体多酸的基本结构未发生明显变化,其Ag以单质形式存在,且显示为介孔材料。在微波场作用下,复合材料Ag-H6P2W18O62/TiO2对甲基橙的降解表现了较高的催化活性。
The nano-composite material Ag-H6P2W18O62/TiO2 in this study was prepared by sol-gel method combined with temperature-programmed hydrothermal treatment. The phase structures, chemical composition, opticalabsorption properties and surface physicochemical properties were characterized via FTIR, ICP-AES, XRD, nitrogen adsorption/desorption and TEM. The results showed the basic structure of polyoxometaltes in the composites has been basicly matained. The composites Ag-H6P2W18O62/TiO2 are periodical mesoporous materials, and the silver species existing in the nano-composite Ag-H6P2W18O62/TiO2 was metallic Ag. The photocatalytic activities of the as-prepared material were studied by the microwave assisted photodegradation of methyl orange. The results showed that the photocatalytic activitiy of Ag-H6P2W18O62/TiO2 for methyl orange was higher.
出处
《齐齐哈尔大学学报（自然科学版）》
2012年第4期5-8,共4页
Journal of Qiqihar University(Natural Science Edition)
关键词
溶胶-凝胶
杂多酸
微波
光催化
甲基橙
sol-gel
heteropolyacid
microwave
photocatalysis
methyl orange
