Adsorption-driven photocatalytic activity of mesoporous titanium dioxide.
Titanium dioxide with a mesoporous structure, when photoactivated in water, demonstrates an unprecedented photocatalytic activity, driven strongly by an adsorption degree of molecules onto the catalyst surface, which promotes a preferential conversion of a well-adsorbed molecule. This catalyzes a selective transformation of a well-adsorbed molecule into a less-adsorbed molecule, so-labeled "stick-and-leave" transformation, which promotes a direct hydroxylation of benzene to phenol, one of the most difficult synthetic reactions, with very high selectivity (>80%) and using water as a source of oxidant.
Shiraishi
Yasuhiro
Y
Research Center for Solar Energy Chemistry, and Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, Toyonaka 560-8531, Japan.
Saito
Naoya
N
Hirai
Takayuki
T
D000327:Adsorption; D001555:Benzene Derivatives / Q000138:chemical synthesis / Q000737:chemistry; D002384:Catalysis; D004578:Electron Spin Resonance Spectroscopy / Q000379:methods; D015394:Molecular Structure; D010316:Particle Size; D010777:Photochemistry; D016062:Porosity; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*
D001555:Benzene Derivatives; C009495:titanium dioxide; D014025:Titanium