Mesoporous carbon nitride – silica composites by a combined sol – gel / thermal condensation approach and their application as photocatalysts †

Content Provider	Semantic Scholar
Author	Kailasam, Kamalakannan Epping, Jan Dirk Thomas, Arne Losse, Sebastian Junge, Henrik
Copyright Year	2011
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.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://depositonce.tu-berlin.de/bitstream/11303/5716/1/c1ee02165f.pdf
Language	English
Access Restriction	Open
Subject Keyword	Carbon Dioxide Carbon Tetrachloride Carbon cycle Carbon-Carbon Lyases Chromosome Condensation Clinical Use Template Cyanamide Gene regulatory network Graphite Hydrogen Large Liquid substance Nanocomposite Nanocomposites Noise shaping Semiconductor Semiconductors Silica Gel Silicon Dioxide Sol-gel Stacking cyanogen electrode metal oxide
Content Type	Text
Resource Type	Article