Yue Chunxiao et al 2009 J. Phys.: Conf. Ser. 188 012006 doi:10.1088/1742-6596/188/1/012006
Yue Chunxiao1,2, Yao Lanfang2, Tian Linlin2 and Fang Xueling2
Show affiliationsnSiO2-TiO2-CTAB (n is the molar ratio of Si to Ti, n = 2, 10, 20, 40, 60, 80) composite films were synthesized by sol-gel process of titanium isopropoxide (TPOT) and tetraethyl orthosilicate (TEOS) hydrolyzation using surfactant cetyltrimethyl ammonium bromide (CTAB) as the template. The microstructure of the films was investigated by Transmission electron microscopy (TEM), atomic force microscope (AFM), X-ray diffractometer (XRD) and UV- infrared spectrophotometer. The results show that Ti ions homogeneously disperse in the mesoporous SiO2 matrix forming Si-O-Ti bonding when n is greater than 20, and Ti ions disrupt the uniformity of the pores in the composite mesoporous films and reduce the structural order when n is lesser than 10. SiO2 and TiO2 of SiO2-TiO2-CTAB mesoporous films is amorphous calcined at 450°C, 600°C, 700°C, 800°C.
68.55.Ln Defects and impurities: doping, implantation, distribution, concentration, etc.
68.55.A- Nucleation and growth
61.43.Gt Powders, porous materials
81.20.Fw Sol-gel processing, precipitation
78.40.-q Absorption and reflection spectra: visible and ultraviolet
Condensed matter: electrical, magnetic and optical
Issue 1 (2009)
Yue Chunxiao et al 2009 J. Phys.: Conf. Ser. 188 012006
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