A　series　of　TiO2/SiO2　supported　oxides　were　prepared　by　surface　reaction　of　silica　with　an　acetone　solution　of　Ti　(i-OC3H7)nCl4-n,　where　n　=　0-2,　under　N2　atmosphere.　Results　of　chemical　analysis,　XRD,　XPS,　Raman,　and　UV-VIS　DRS　showed　that　two　types　of　Ti　species,　small　particles　of　anatase-type　TiO2　and　noncrystalline　TiOx　species,　are　molecularly　dispersed　on　the　silica　surface.　Compared　with　the　TiO2　bulk,　a　blue-shift　in　the　bandgap　adsorption　edge　of　TiO2/SiO2　was　observed　due　to　the　quantum　size　effects.　At　higher　TiO2　loadings,　the　bandgap　energy　and　LMCT　transition　(O2-&rarrTi4+)　of　Ti　atoms　decreases,　which　may　be　associated　with　the　polymerization　of　the　surface　Ti　atoms.　When　M(Pd,　Cu,　Ni)　deposited　on　TiO2/SiO2,　the　adsorption　spectra　expand　to　visible　light　region　and　the　bandgap　adsorption　edge　red　shift　with　respect　to　TiO2/SiO2,　which　depends　on　the　interaction　between　M　and　TiO2　through　overlapping　Mnd　with　02p　orbital.　Similarly,　as　for　the　incorporation　of　MoO3　on　TiO2/SiO2,　the　photon　adsorption　property　for　visible　light　can　be　improved　relatively,　and　the　bandgap　energy　and　the　bandgap　adsorption　edge　is　more　related　to　the　coupled　action　between　MoO3　and　TiO2.