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Molecules 2015, 20(12), 21881-21895; doi:10.3390/molecules201219812

Nanocasting of Periodic Mesoporous Materials as an Effective Strategy to Prepare Mixed Phases of Titania

Department of Chemistry, University of South Dakota, 414 E. Clark Street, Vermillion, 57069 SD, USA
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Author to whom correspondence should be addressed.
Academic Editors: Jimmy C. Yu and Wing-Kei Ho
Received: 17 November 2015 / Revised: 1 December 2015 / Accepted: 3 December 2015 / Published: 8 December 2015
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Abstract

Mesoporous titanium dioxide materials were prepared using a nanocasting technique involving silica SBA-15 as the hard-template. At an optimal loading of titanium precursor, the hexagonal periodic array of pores in SBA-15 was retained. The phases of titanium dioxide could be easily varied by the number of impregnation cycles and the nature of titanium alkoxide employed. Low number of impregnation cycles produced mixed phases of anatase and TiO2(B). The mesoporous TiO2 materials were tested for solar hydrogen production, and the material consisting of 98% anatase and 2% TiO2(B) exhibited the highest yield of hydrogen from the photocatalytic splitting of water. The periodicity of the pores was an important factor that influenced the photocatalytic activity. This study indicates that mixed phases of titania containing ordered array of pores can be prepared by using the nanocasting strategy. View Full-Text
Keywords: nanocasting; hard-template; titanium dioxide; TiO2; mesoporous; periodic; hexagonal; TiO2(B); hydrogen production; water-splitting nanocasting; hard-template; titanium dioxide; TiO2; mesoporous; periodic; hexagonal; TiO2(B); hydrogen production; water-splitting
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Mahoney, L.; Rasalingam, S.; Wu, C.-M.; Koodali, R.T. Nanocasting of Periodic Mesoporous Materials as an Effective Strategy to Prepare Mixed Phases of Titania. Molecules 2015, 20, 21881-21895.

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