Novel synthesis of highly ordered mesoporous Fe2O3/SiO2 nanocomposites for a room temperature VOC sensor |
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| Authors: | Nguyen Van Quy Tran Minh Hung Trinh Quang Thong Le Anh Tuan Tran Quang Huy Nguyen Duc Hoa |
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| Affiliation: | 1. International Training Institute for Materials Science, Hanoi University of Science and Technology (HUST), No. 1, Dai Co Viet Road, Hai Ba Trung, Hanoi, Viet Nam;2. School of Engineering Physics, Hanoi University of Science and Technology, No. 1, Dai Co Viet Road, Hai Ba Trung, Hanoi, Viet Nam;3. Advanced Institute of Science and Technology, Hanoi University of Science and Technology, No. 1, Dai Co Viet Road, Hai Ba Trung, Hanoi, Viet Nam;4. Laboratory of Ultrastructure and Bionanotechnology, National Institute of Hygiene of Epidemiology, No. 1, Yersin Street, Hai Ba Trung, Hanoi, Viet Nam |
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| Abstract: | 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. |
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| Keywords: | Mesoporous QCM Vapour sensors Alcohol |
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