Visible Light-Driven Photocatalytic Performance of N-Doped ZnO/g-C3N4 Nanocomposites
| Autor: | Hui Li, Min Li, Aidong Li, Xi-Rui Zhao, Di Wu, Wei Zhang, Haifa Zhai, Shan-Shan Wang, Jizhou Kong |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Nanochemistry Composite Nanotechnology 02 engineering and technology 010402 general chemistry 01 natural sciences X-ray photoelectron spectroscopy g-C3N4 Visible-light irradiation lcsh:TA401-492 N-doped ZnO General Materials Science High-resolution transmission electron microscopy Photocatalytic degradation Nanocomposite Nano Express Doping 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Absorption edge Chemical engineering Photocatalysis lcsh:Materials of engineering and construction. Mechanics of materials 0210 nano-technology Visible spectrum |
| Zdroj: | Nanoscale Research Letters Nanoscale Research Letters, Vol 12, Iss 1, Pp 1-10 (2017) |
| ISSN: | 1556-276X 1931-7573 |
| DOI: | 10.1186/s11671-017-2297-0 |
| Popis: | N-doped ZnO/g-C3N4 composites have been successfully prepared via a facile and cost-effective sol-gel method. The nanocomposites were systematically characterized by XRD, FE-SEM, HRTEM, FT-IR, XPS, and UV-vis DRS. The results indicated that compared with the pure N-doped ZnO, the absorption edge of binary N-doped ZnO/g-C3N4 shifted to a lower energy with increasing the visible-light absorption and improving the charge separation efficiency, which would enhance its photocatalytic activity. Compared with the pure g-C3N4, ZnO, N-doped ZnO and the composite ZnO/g-C3N4, the as-prepared N-doped ZnO/g-C3N4 exhibits a greatly enhanced photocatalytic degradation of methylene blue and phenol under visible-light irradiation. Meanwhile, N-doped ZnO/g-C3N4 possesses a high stability. Finally, a proposed mechanism for N-doped ZnO/g-C3N4 is also discussed. The improved photocatalysis can be attributed to the synergistic effect between N-doped ZnO and g-C3N4, including the energy band structure and enhanced charge separation efficiency. |
| Databáze: | OpenAIRE |
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