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193250 
Journal Article 
Synthesis and characterization of mesoporous silica films encapsulating titanium dioxide particles: Photodegradation of 2,4-dichlorophenol 
Adams, WA; Bakker, MG; Macias, T; Jefcoat, IA 
2004 
Yes 
Journal of Hazardous Materials
ISSN: 0304-3894
EISSN: 1873-3336 
112 
3 
253-259 
English 
Degussa P-25 TiO2 encapsulated in a SBA-15 mesoporous thin film silica matrix prepared using a block copolymer templating method. The film structure was characterized using small angle X-ray diffraction (XRD), variable angle spectroscopic ellipsometry (VASE), and polarized light microscopy. The photoactivity of the films was assessed using HPLC and UV-vis spectroscopy to study the photodegradation of 2,4-dichlorophenol, an industrial pollutant, in water under 350 nm irradiation. The unoptimized film was found to be approximately half as photoactive as an equivalent dispersion of TiO2.