Synthesis of SnS2/few layer boron nitride nanosheets composites as a novel material for visible-light-driven photocatalysis
| Autor: | Hui Li, Chen-Xu Zhang, Xiang-Feng Wu, Ying Zhang, Yang Sun, Jia-Rui Zhang, Jun-Zhang Su, Yi-Jin Wang, Fei-Fei Yang, Jun-Cheng Pan |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Diffuse reflectance infrared fourier transform 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Dielectric spectroscopy Rhodamine chemistry.chemical_compound chemistry Boron nitride Rhodamine B Photocatalysis General Materials Science Fourier transform infrared spectroscopy Composite material 0210 nano-technology Visible spectrum |
| Zdroj: | Applied Physics A. 123 |
| ISSN: | 1432-0630 0947-8396 |
| Popis: | SnS2/few layer boron nitride nanosheets composites were synthesized via a one-step hydrothermal method. The as-prepared samples were characterized by X-ray diffraction, transmission electrical microscopy, UV–vis diffuse reflectance spectroscopy, Fourier transform infrared spectroscopy, photoluminescence emission spectra and electrochemical impedance spectroscopy, respectively. Rhodamine B was adopted to evaluate the degradation efficiency of the as-prepared samples under visible light irradiation. Experimental results showed that, compared to pure SnS2, the few layer boron nitride nanosheets could improve photocatalytic activities of the samples for the degradation of Rhodamine B. With increasing the usage amount of the few layer boron nitride nanosheets, the degradation efficiency was first increased and then decreased. When the usage amount of the few layer boron nitride nanosheets was 10 wt%, it exhibited the highest degradation efficiency of 93.7% in 210 min, which was higher than 50% of pure SnS2. After it was recycled for four times, it still possessed 88.7% of degradation efficiency. This was increased by 1008.7% than pure SnS2. Moreover, it had band gap energy of 1.78 eV, obviously smaller than 2.06 eV of pure SnS2. In addition, a possible photocatalytic mechanism was also presented. |
| Databáze: | OpenAIRE |
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