Direct synthesis of a photoactive inorganic-organic mesostructured hybrid material and its application as a photocatalyst.
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.
Corma
Avelino
A
Instituto de Tecnología Química UPV-CSIC, Avenida Los Naranjos s/n, 46022, Valencia, Spain. acorma@itq.upv.es
Navarro
Maria T
MT
Rey
Fernando
F
Ruiz
Violeta R
VR
Sabater
Maria J
MJ