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Main Title: Mesoporous carbon nitride-silica composites by a combined sol-gel/thermal condensation approach and their application as photocatalysts
Author(s): Kailasam, Kamalakannan
Epping, Jan Dirk
Thomas, Arne
Losse, Sebastian
Junge, Henrik
Type: Article
Language Code: en
Abstract: Mesoporous carbon nitrides, silicas and their composites have been prepared by a combined sol–gel and thermal condensation approach. Precursors for the carbon nitride (cyanamide) and silica (TEOS) are mixed and condensed simultaneously. After condensation and heat treatment it is observed that the carbon nitride and silica formed highly interpenetrating mesophases which leads either to the formation of mesoporous carbon nitride or silica after selective removal of one of the phases. Importantly, the carbon nitride preserves its graphitic stacking even in the spatial confinement introduced by the surrounding silica phase. As both precursors are liquids this approach allows convenient shaping into thin and thick films or monoliths of mesoporous carbon nitrides. Enhanced photocatalytic activity is observed for the production of hydrogen from water when these mesoporous carbon nitrides are applied as photocatalyst in comparison to the bulk, but also to other mesoporous carbon nitrides, prepared by the reported two-step, hard templating approach.
Issue Date: 2011
Date Available: 29-Jun-2016
DDC Class: 690 Hausbau, Bauhandwerk
Sponsor/Funder: BMBF, 03IS2071D, Light2Hydrogen
Journal Title: Energy & environmental science
Publisher: Royal Society of Chemistry
Publisher Place: Cambridge
Volume: 4
Issue: 11
Publisher DOI: 10.1039/c1ee02165f
Page Start: 4668
Page End: 4674
EISSN: 1754-5692
Notes: Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
Appears in Collections:Inst. Chemie » Publications

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