摘要
采用两步溶胶-凝胶法制备了TiO2/SiO2纳米介孔复合薄膜,经X-射线衍射(XRD)、傅立叶变换红外光谱(FTIR)和透射及扫描电子显微镜(TEM,SEM)表征,显示介孔复合薄膜中锐钛矿型TiO2纳米粒子均匀分散在SiO2介孔基底中,经光催化降解氨气的试验,结果表明该介孔复合薄膜的光催化活性比普通的TiO2粒子有较大的提高。
Nanosized composite films of TiO2/SiO2 were fabricated by a two-step solgel method. A series of characterizations of X-ray diffraction （XRD）, Fourier transform infrared （FTIR） spectra and transmission electron microscopy （TEM） revealed that anatase nanoparticles dispersed homogeneously in the matrix of porous silica film. Thus prepared nanocomposite films exhibited higher efficiency than the conventional counterparts in the photoc atalytic degradation of gaseous ammonia under the same conditions.
出处
《安全与环境工程》
CAS
2009年第2期40-43,47,共5页
Safety and Environmental Engineering
基金
国家科技部科技支撑计划专题项目(2006BAK01B03-1)资助
