Novel synthesis of highly ordered mesoporous Fe2O3/SiO2 nanocomposites for a room temperature VOC sensor

作者：Nguyen Van Quy^*; Tran Minh Hung; Trinh Quang Thong; Le Anh Tuan; Tran Quang Huy; Nguyen Duc Hoa

来源：Current Applied Physics, 2013, 13(8): 1581-1588.

DOI：10.1016/j.cap.2013.06.002

• Mesoporous
• SiO2/Fe2O3 nanocomposites
• QCM
• Vapour sensors
• Alcohol

The controlled synthesis of mesoporous silica and metal oxide nanocomposites with a highly ordered porous structure and large specific surface area for specific applications has been an attractive topic in the field of porous materials. Herein, we introduce a novel method for the fabrication of highly ordered mesoporous structured and large specific surface area Fe2O3/SiO2 nanocomposites, and consider their application in room temperature gas sensors. The mesoporous Fe2O3/SiO2 nanocomposites were synthesised by a two-step method, which combines the hydrothermal growth of Fe2O3 nanoparticles and the microemulsion phase of Brij 56 (C16EO10) surfactant as templates in instantly direct-templating synthesis. This synthesis method enables the fabrication of mesoporous Fe2O3/SiO2 nanocomposites without distortion of the ordered porous structure after calcination at high temperature. The synthesised materials were found to be efficient in a room temperature VOC sensor application, with good recovery.

• 出版日期2013-10