摘要
采用溶胶-凝胶法,正硅酸乙酯(TEOS)和钛酸丁酯(TBT)为硅源和钛源,以离子液体1-丁基-3-甲基咪唑溴盐([HMIM]Br)为模板剂,常压干燥制备了块状TiO2-SiO2复合气凝胶。通过SEM、TEM、XRD、FT-IR及N2吸附-脱附法对复合气凝胶的结构进行了表征,并对其光催化性能进行相关研究。制备的n(Ti)∶n(Si)∶n(ILs)=2∶1∶0.5的TiO2-SiO2复合气凝胶具有多孔结构,其孔径为3.216nm,孔体积为0.418cm3/g,比表面积为519.4m2/g,且对罗丹明B的光降解性能明显高于P25。
The block TiO2-SiO2 composite aerogels were prepared with tetraethyl orthosilicate and tetraethyl titanate as Si resource and Ti resource by Sol-Gel method and using [HMIM]Br as a template. The microstructure of the composite aerogels was characterized by SEM, TEM, XRD, FT-IR and N2 adsorption-desorption measurement. The results indicated that the TiOz-SiO2 composite aerogels obtained at n(Ti) : n(Si) : n(ILs) = 2 : 1 : 0.5 exhibited a porous structure, in which the pore size and pore volume are 3. 216 nm and 0. 418 cm3 /g and the specific surface area is 519.4 m2/g. The photocatalytic degradation ratio of rhodamine B is higher than that of P25.
出处
《大连工业大学学报》
CAS
北大核心
2013年第1期43-46,共4页
Journal of Dalian Polytechnic University
作者简介
李艳春(1985-),男,硕士研究生
通信作者:于春玲(1966-),女,副教授.