Photocatalytic reduction of CO2 into CO over nanostructure Bi2S3 quantum dots/g-C3N4 composites with Z-scheme mechanism
| Autor: | Yu-fang Miao, Rui-tang Guo, Jun-ying Tang, Zai-guo Fu, Zhong-yi Wang, Xu Shi, Jing-wen Gu, Hao Qin, Peng-yao Jia, Xing-yu Liu, Wei-guo Pan |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Nanostructure Recombination rate General Physics and Astronomy 02 engineering and technology Surfaces and Interfaces General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Catalysis Reduction (complexity) Quantum dot Yield (chemistry) Photocatalysis Composite material 0210 nano-technology Absorption (electromagnetic radiation) |
| Zdroj: | Applied Surface Science. 500:144059 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2019.144059 |
| Popis: | Bi2S3 quantum dots (QDs) /g-C3N4 composites with various Bi2S3 QDs contents were synthesized by hydrothermal reaction method and used in CO2 photocatalytic reduction, which demonstrated much higher photocatalytic activity than pristine g-C3N4. Experimental results indicated that the 20 wt% Bi2S3 QDs/g-C3N4 showed a remarkable photocatalytic activity, which was 4 times the CO yield of that pure g-C3N4. The SEM and TEM results indicated that Bi2S3 QDs had uniformly covered the catalysts surface, which could effectively increase the absorption of visible-light and promote the separation of photogenerated carriers, thereby decrease the recombination rate of photogenerated electron-hole pairs and enhance the performance of photocatalytic reduction. |
| Databáze: | OpenAIRE |
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