Direct synthesis of a photoactive inorganic-organic mesostructured hybrid material and its application as a photocatalyst.
Chemphyschem
; 10(7): 1084-9, 2009 May 11.
Article
em En
| MEDLINE
| ID: mdl-19229898
ABSTRACT
A photoactive, hexagonally structured mesoporous material (Tyl-MCM41) is produced through co-hydrolysis of SiO(2) and a trialkoxysilane-functionalized trityl cation as photoactive species. The formation of the corresponding triphenylmethanol precursor in the material is confirmed by spectroscopic techniques. The hybrid material has an ordered structure with a narrow pore size distribution typical of ordered mesoporous MCM-41-type materials. The triarylcarbinol molecules incorporated into this hybrid structure (Triphol-MCM41) generate trityl cations under acidic conditions, which are photoactive and able to promote the photosensitized dimerization of 1,3-cyclohexadiene in a heterogeneous solid-liquid system. The material is stable and can be recycled without loss of the photochemical activity.
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MEDLINE
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En
Ano de publicação:
2009
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Article