Novel graphitic-C3N4 nanosheets: enhanced visible light photocatalytic activity and photoelectrochemical detection of methylene blue dye
| Autor: | K. Y. Li, J. Luo, Z. L. Fang, S. Xiong |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Photocurrent
Materials science Mechanical Engineering 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Photochemistry 01 natural sciences Exfoliation joint 0104 chemical sciences chemistry.chemical_compound chemistry Mechanics of Materials Rhodamine B Photocatalysis General Materials Science 0210 nano-technology Absorption (electromagnetic radiation) Melamine Pyrolysis Methylene blue |
| Zdroj: | Materials Technology. 32:391-398 |
| ISSN: | 1753-5557 1066-7857 |
| DOI: | 10.1080/10667857.2016.1262309 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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