| Autor: |
Hu Jiahao, Ding Jie, Ai Jianping, Li Honglin, Li Shaozhi, Ma Qingbo, Luo Lihui, Xu Xiaoling |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Nanotechnology Reviews, Vol 10, Iss 1, Pp 919-932 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2191-9097 |
| DOI: |
10.1515/ntrev-2021-0057 |
| Popis: |
In this article, the flower-like, urchin-like, and rod-like ZnOs were synthesized by a convenient atmospheric hydrothermal method. The crystalline structures, morphologies, exposed crystal faces, and specific surface areas of the as-prepared ZnO samples were analyzed. Rhodamine B (RhB) was used as the simulated pollutant to evaluate the photocatalytic performance of the ZnO nanostructures. The flower-like ZnO prepared by controlled hydrothermal method at room temperature for 2 h displayed highest specific surface area and exposed more high active {21¯1¯0}\{2\bar{1}\bar{1}0\} facets compared to the other two morphologies of ZnO. In addition, within 2 h of the photocatalytic reaction, the flower-like ZnO results in 99.3% degradation of RhB and produces the most hydroxyl radicals (˙OH) 47.83 μmol/g and superoxide anions (˙O2−{\text{O}}_{2}^{-}) 102.78 μmol/g. Due to the existence of oxygen vacancies on the surface of {21¯1¯0}\{2\bar{1}\bar{1}0\} facets, the flower-like ZnO can efficiently catalyze the production of active oxygen, leading to the improvement in the photocatalytic efficiency. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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