Journal
MATERIALS TECHNOLOGY
Volume 32, Issue 7, Pages 391-398Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/10667857.2016.1262309
Keywords
Bulk-C3N4; graphitic-C3N4 nanosheets; photocatalytic activity; melamine
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Funding
- National Natural Science Foundation of P.R. China [21365012]
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The graphitic-C3N4 nanosheets were synthesised via direct pyrolysis of melamine followed by a thermal exfoliation. The structure, morphology, optical, and electronic properties were explored by comprehensive characterisation methods and the photocatalytic activities of the graphitic-C3N4 nanosheets were evaluated by the degradation of Rhodamine B under visible light irradiation. Moreover, the graphitic-C3N4 nanosheets were used to determinate the concentration of methylene blue. The results showed that graphitic-C3N4 nanosheets have the same structural feature with that of the bulk-C3N4. The enhancing photocatalytic performance of the graphitic-C3N4 nanosheets results from the more absorption and active sites, the improving separation efficiency of photogenerated electron-hole pairs. Moreover, the photocurrent intensity decreased with the increasing of methylene blue concentration, which makes graphitic-C3N4 nanosheets a promising sensor material for estimating the concentration of methylene blue.
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