Direct Synthesis of a Photoactive Inorganic-Organic Mesostructured Hybrid Material and its Application as a Photocatalyst

被引：2

作者：

Corma, Avelino ^{[1
]}

Navarro, Maria T. ^{[1
]}

Rey, Fernando ^{[1
]}

Ruiz, Violeta R. ^{[1
]}

Sabater, Maria J. ^{[1
]}

机构：

[1] CSIC, UPV, Inst Tecnol Quim, Valencia 46022, Spain

来源：

CHEMPHYSCHEM | 2009年 / 10卷 / 07期

关键词：

dimerization; mesoporous materials; organic-inorganic hybrid composites; photochemistry; triarylmethylium cation; CHARGE-TRANSFER PHENOMENA; PORE-SIZE ANALYSIS; MESOPOROUS SILICA; MOLECULAR-SIEVES; RADICAL CATION; PYRYLIUM-SALTS; CATALYSTS; ROUTE; FUNCTIONALIZATION; DECARBONYLATION;

D O I：

10.1002/cphc.200800724

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A photoactive, hexagonally structured mesoporous material (Tyl-MCM41) is produced through co-hydrolysis of SiO2 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-cyclohexacliene in a heterogeneous solid-liquid system. The material is stable and can be recycled without loss of the photochemical activity.

引用

页码：1084 / 1089

页数：6

共 46 条

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