Mesoporous molecular sieve TiO2MCM-41 was successfully synthesized in this investigation using tetrabutyl titanate as a precursor in supercritical carbon dioxide.Titanium precursor was transported and thus dispersed uniformly into the MCM-41 molecular sieve,which was confirmed by structural characterizations of X-ray powder diffraction and FT-IR analysis.Methyl Orange was selected as a simulation pollutant to evaluate the decolorization ability of as-synthesized photocatalyst and satisfactory results were f...