(Phen)_(2.5)HPW/WO_3复合空心微球的制备及光催化性能  

Preparation and Photocatalytic Performance of(Phen)_(2.5)HPW/WO_3 Composite Hollow Microspheres

作　　者：张志红[1] 赵秀峰[1] 张立忠[1] 

机构地区：[1]昌吉学院化学与应用化学系,新疆昌吉831100

出　　处：《分子催化》2011年第2期152-156,共5页Journal of Molecular Catalysis(China)

基　　金：新疆教育厅重点项目(20081018190126812)

摘　　要：通过磷钨酸H3PW12O40(HPW)和邻菲啰啉C12H8N2(Phen)的溶液反应,合成了杂多化合物(C12H8N2)2.5H3PW12O40((Phen)2.5HPW),以WO3空心微球为载体,负载杂多化合物(Phen)2.5HPW,制备了(Phen)2.5HPW/WO3复合空心微球.用等离子体原子发射光谱(ICP-AES)、元素分析(EA)、热重-差热分析(TG-DTA)、傅里叶变换红外光谱(FTIR)、扫描电子显微镜(SEM)、紫外-可见漫反射吸收光谱(UV-vis DRS)对样品进行了表征.在高压汞灯照射下,研究了杂多化合物(Phen)2.5HPW、WO3空心微球和(Phen)2.5HPW/WO3复合空心微球对甲基橙水溶液的光催化降解活性,结果表明,(Phen)2.5HPW/WO3复合空心微球的光催化活性高于单独的杂多化合物(Phen)2.5HPW和WO3空心微球,催化剂易于回收,光催化性能稳定.Heteropoly compound（C12H8N2）2.5 H3PW12O40（（Phen）2.5HPW） was synthesized via a solution reaction between phosphotungstic acid（HPW） and Phenanthroline（Phen）,and（Phen）2.5HPW/WO3 composite hollow microspheres were prepared with WO3 hollow microspheres dipping in Phenanthroline and phosphotungstic acid solution subsequently.Inductively coupled plasma atomic emission spectroscopy（ICP-AES）,elemental analysis（EA）,thermogravimetry-differential thermal analysis（TG-DTA）,Fourier transform infrared spectroscopy（FTIR）,scanning electron microscopy（SEM）,and UV-vis diffuse reflectance spectroscopy（UV-vis DRS） were used for characterization.Photocatalytic performance of the heteropoly compound（Phen）2.5HPW,WO3 hollow microspheres and（Phen）2.5HPW/WO3 composite hollow microspheres were tested by photocatalytic decomposition of methyl orange aqueous solution upon irradiation of high pressure mercury lamp,respectively.The results showed that the activity of（Phen）2.5HPW/WO3 composite hollow microspheres was higher than that of（Phen）2.5HPW and WO3 hollow microspheres respectively,and deactivation of（Phen）2.5HPW/WO3 composite hollow microspheres was negligible when the catalyst was separated for recycling applications.

关 键 词：杂多化合物 WO3 复合空心微球 光催化 

分 类 号：O611.4[理学—无机化学] X703.1[理学—化学]