三维有序大孔复合材料H_6P_2W_(18)O_(62)/TiO_2制备与多模式光催化  

Preparation of three-dimensionally ordered macroporous composite H_6P_2W_(18)O_(62)/TiO_2 and its photocatalytic degradation under multiple modes

作　　者：齐云英[1,2] 李莉[1,2,3] 张文治[2] 柳迪[1] 王双[1] 

机构地区：[1]材料科学与工程学院齐齐哈尔大学,黑龙江齐齐哈尔161006 [2]化学与化学工程学院齐齐哈尔大学,黑龙江齐齐哈尔161006 [3]黑龙江省高校精细化工材料重点实验室,黑龙江齐齐哈尔161006

出　　处：《化学研究与应用》2016年第5期595-603,共9页Chemical Research and Application

基　　金：国家自然科学基金项目(21376126)资助;黑龙江省自然科学基金项目(B201106)资助;黑龙江省教育厅科学技术研究项目(12511592)资助;黑龙江省政府博士后经费(LBH-Z11108)资助;黑龙江省政府博士后科研启动经费(LBH-Q13172)资助;齐齐哈尔大学研究生创新计划项目(YJSCX2014-009X)资助;齐齐哈尔大学2015年大学生学术科技创新团队项目资助;齐齐哈尔大学大学生创新创业训练计划项目(201510221077)资助

摘　　要：采用聚苯乙烯(PS)微球做模板,以甲醇真空法制备的三维有序大孔材料(3DOM)TiO_2为载体,通过浸渍法将其与多酸H_6P_2W_(18)O_(62)复合制备成3DOM H_6P_2W_(18)O_(62)/TiO_2。通过傅立叶-红外光谱(FT-IR)、X射线粉末衍射(XRD)、紫外-可见漫反射吸收光谱(UV-Vis/DRS)、X射线光电子能谱(XPS)、扫描电子显微镜(SEM)和N2吸附-脱附等表征手段对所合成材料的光吸收性质、结构和晶相进行了表征,结果表明,3DOM H_6P_2W_(18)O_(62)/TiO_2复合材料中多酸仍然保留其Dawson结构,且晶型结构以TiO_2锐钛矿结构为主。为考察所合成纳米复合材料3DOM H_6P_2W_(18)O_(62)/TiO_2的光催化活性,选用甲基橙为模型分子,在紫外光、可见光和微波辅射等多模式作用下,对其进行了光催化活性的研究。结果显示,紫外光催化过程中纳米复合材料3DOM H_6P_2W_(18)O_(62)/TiO_2的活性最高,且在可见光、微波作用下3DOM H_6P_2W_(18)O_(62)/TiO_2对染料均具有一定的降解效果。Three-dimensionally ordered macroporous composite 3DOM H6 P2 W18 O62/TiO2 was prepared by the impregnation method methanol combined with polystyrene(PS)latex sphere templating technique and 3DOM TiO2 synthezed by methanol vacuum method as the canier. The phase structures,chemical composition,optical absorption properties and surface physicochemical properties were well-characterized via Fourier transform infrared spectrum(FT-IR),X-ray diffraction(XRD),UV-vis diffuse reflex spectrum(Uv-vis/DRS),X-ray photoelectron spectroscopy(XPS),Scanning electron microscopy(SEM)and N2 adsorption-desorption tests. The results showed that the primary Dawson structures remained intact in the composites,simultaneously;3DOM H6P2W18O62/TiO2 had anatase crystalline structure. The photocatalytic activities of the synthesized composite 3DOM H6P2W18O62/TiO2 were studied by the methyl orange as model molecule under multi-mode photocatalytic degradation including ultraviolet light,visible light and microwave radio. Results showed that 3DOM H6P2W18O62/TiO2 showed the best photocatalytic performance under the UV irradiation,moreover, which exhibited superior photocatalytic degradation for dyes under microwave-assisted and visible photocatalytic degradation.

关 键 词：聚苯乙烯 甲醇真空法 三维有序大孔材料 H6P2W18O62/TiO2 光催化 

分 类 号：O644[理学—物理化学]