Fabrication of BiOIO 3 nanosheets with remarkable photocatalytic oxidation removal for gaseous elemental mercury
| Autor: | Xin yuan Zhu, Qiang Wu, Xue mei Qi, Miao li Gu, Kai He, Hui min Long, Jiang Wu |
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| Rok vydání: | 2016 |
| Předmět: |
Fabrication
Chemistry General Chemical Engineering Light irradiation Elemental mercury 02 engineering and technology General Chemistry Crystal structure 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences Industrial and Manufacturing Engineering Hydrothermal circulation 0104 chemical sciences Photocatalysis Environmental Chemistry Irradiation 0210 nano-technology |
| Zdroj: | Chemical Engineering Journal. 285:11-19 |
| ISSN: | 1385-8947 |
| DOI: | 10.1016/j.cej.2015.09.055 |
| Popis: | Series of BiOIO 3 photocatalysts prepared at different pH values via a facile hydrothermal method were used to remove gaseous elemental mercury under UV and LED light irradiation. Results showed that the morphology and crystal structure of BiOIO 3 products could be controlled by the pH value of precursor. The BiOIO 3 products could be obtained only at strong acid condition. The BiOIO 3 sample with nanosheets morphology prepared at 2.03 ⩽ pH ⩽ 3.05 exhibited superior photocatalytic activity and nearly 100% of Hg 0 were removed after UV light (25 min) and LED light (100 min) irradiation. The removal efficiency of Hg 0 was higher than that of P25 (UV light, 77%, LED light, 42%) under the same condition. The photogenerated holes were the main oxidative species responsible for the oxidation removal of Hg 0 . This newly BiOIO 3 photocatalysts, with superior photocatalytic activity and good stability have potential application for the Hg 0 oxidation removal. |
| Databáze: | OpenAIRE |
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