NDLI: Thermally-induced desulfurization and conversion of guanidine thiocyanate into graphitic carbon nitride catalysts for hydrogen photosynthesis

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Back cover

Journal of Materials Chemistry A Vol - 2 Issue - 8

Journal of Materials Chemistry A Vol - 2 Issue - 7

Journal of Materials Chemistry A Vol - 2 Issue - 6

Journal of Materials Chemistry A Vol - 2 Issue - 5

Journal of Materials Chemistry A Vol -1

Thermally-induced desulfurization and conversion of guanidine thiocyanate into graphitic carbon nitride catalysts for hydrogen photosynthesis

Content Provider	Royal Society of Chemistry (RSC)
Author	Lin, Jinliang Wang, Xinchen Long, Baihua
Copyright Year	2014
Abstract	A cheap and easily-available organosulfur compound, guanidine thiocyanate, has been used to synthesize graphitic carbon nitride (g-C3N4) by a thermally-induced desulfurization and polymerization of the precursor. Photocatalytic activity experiments demonstrated that the g-C3N4 synthesized from guanidine thiocyanate exhibited a much higher H2 evolution rate than the reference sample prepared from dicyanamide. Further improvement in the activity was achieved by optimization of the condensation temperature. Based on X-ray photoelectron spectroscopy analysis, the samples synthesized at a high temperature of 700 °C feature a high crystallinity and a low density of surface defects, with an enhanced optical absorbance extending to the visible light region. As a result, the sample prepared at 700 °C has been found to be 7 times more reactive towards photocatalytic hydrogen evolution than the sample polymerized at the normal temperature of 550 °C. Other guanidine halides have also been applied to synthesize g-C3N4 materials, and the structure and activity of the resultant g-C3N4 were compared to the carbon nitride polymer from guanidine thiocyanate.
Starting Page	2942
Ending Page	2951
Page Count	10
File Format	HTM / HTML PDF
ISSN	20507488
Volume Number	2
Issue Number	9
Journal	Journal of Materials Chemistry A
DOI	10.1039/c3ta14339b
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Organosulfur compounds Guanidine Thiocyanate Graphitic carbon nitride Nitride Desulfurisation Polymerization Dicyanamide Mathematical optimization X-ray photoelectron spectroscopy Photoemission spectroscopy Hydrogen Polymer
Content Type	Text
Resource Type	Article
Subject	Chemistry Renewable Energy, Sustainability and the Environment Materials Science

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