掺杂WO_3的SiO_2/TiO_2的溶胶热液合成及光催化性能  

Sol-Hydrothermal Synthesis and Photocatalytic Activity of WO_3 Doped SiO_2/TiO_2 Nanocomposites

作　　者：李银辉[1] 殷德宏[1] 陈赞[1] 王金渠[1] 

机构地区：[1]大连理工大学吸附与无机膜研究所精细化工国家重点实验室,辽宁大连116012

出　　处：《影像科学与光化学》2008年第5期349-357,共9页Imaging Science and Photochemistry

摘　　要：采用溶胶-热液合成法制备了掺杂WO3的SiO2/TiO2复合光催化剂,用X射线衍射、红外光谱、Zeta电位分析、BET和透射电镜对样品进行了表征,并以甲基橙降解评价了其光催化性能.结果表明:改性后的光催化剂表现出较高的光催化性能,WO3和SiO2不仅增加了锐钛矿TiO2的稳定性,并阻止了TiO2晶粒的聚集生长.WO3 doped SiO2/TiO2 nano-particles were synthesized by sol-hydrothermal method and characterized by X-ray diffraction, Fourier transform infrared spectroscopy （FT-IR）, Zeta potential, BET, and transmission electron microscopy. The photocatalytic activity was evaluated by photocatalytic degradation of methyl orange under UV light irradiation. The modified photocatalyst shows high photocatalytie activity. It was found that WO3 and SiO2 increased the stability of anatase TiO2, and inhibited the grain aggregation and growth.

关 键 词：溶胶-热液法 二氧化钛 氧化硅 氧化钨 甲基橙 光催化降解 

分 类 号：O643.36[理学—物理化学]