TiO_2-SnO_2复合氧化物微球的低温水热一步法合成及紫外屏蔽性能  

UV-shielding Properties of TiO_2-SnO_2 Composite Oxide Microspheres Synthesizd via One-step Hydrothermal Method at Low Temperature

作　　者：王元瑞[1,2] 周兵[1] 王子忱[1] 赵旭[1] 

机构地区：[1]吉林大学化学学院,长春130021 [2]长春工业大学化学工程学院,长春130012

出　　处：《高等学校化学学报》2012年第10期2146-2151,共6页Chemical Journal of Chinese Universities

基　　金：吉林省教育厅"十一五"科学技术研究项目(批准号:吉教科合字[2008]第111号)资助

摘　　要：以硫酸钛、四氯化锡和尿素为原料,采用低温水热法一步合成了TiO2-SnO2复合氧化物.采用X射线衍射(XRD)、扫描电子显微镜/能量色散X射线谱仪(SEM/EDAX)及紫外-可见光谱(UV-Vis)对产物的结构与性能进行表征分析,考察了反应条件对产物晶体结构和形貌的影响.结果表明,在静止反应条件下Ti4+/Sn4+摩尔比为6～8时,可以获得尺寸均一的金红石结构TiO2-SnO2复合氧化物微球,其平均粒径为2μm.产物的紫外吸收性能优于同种方法制备的纯TiO2、SnO2及商品P25。Using Ti（SO4） 2, SnCI4 and urea as raw materials, TiO2-SnO2 composite oxide powders with sphe- rical morphology were synthesized by one-step low temperature hydrothermal method in aqueous solutions. The influences of reaction conditions on the structure of the products were investigated. The obtained samples were characterized by X-ray diffraction （XRD）, scanning electron mieroscopy （SEM）, energy dispersive X-ray analysis（EDAX） and UV-Vis spectrometry. The results reveal that uniformly dispersed composite oxides with rutile structure are obtained with average diameters of 2 μm when the Ti4＋/Sn4＋ molar ratio is in the range of 6--8 without stirring, the UV absorption of the product is stronger than that of anatase TiO2 , SnO2 and com- modity P25.

关 键 词：金红石 TiO2-SnO2复合氧化物 紫外屏蔽 尿素 低温水热法 

分 类 号：O614[理学—无机化学]