| Autor: |
Xiangwei Zhang, Chunquan Li, Ting Chen, Ye Tan, Xiaorui Liu, Fang Yuan, Shuilin Zheng, Zhiming Sun |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
International Journal of Mining Science and Technology, Vol 31, Iss 6, Pp 1169-1179 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2095-2686 |
| DOI: |
10.1016/j.ijmst.2021.11.008 |
| Popis: |
The MnFe2O4/g-C3N4/diatomite composites (Mn/G/D) were prepared via a facile precipitation-calcination method in this study. The Mn/G/D possessed higher specific surface area, lower electron-hole pairs’ recombination rate, as well as wider and stronger visible light absorption capacity. Since the synergistic effect between g-C3N4 and MnFe2O4, the photogenerated electron could transfer from g-C3N4 to MnFe2O4, which could promote the migration of electrons as well as enhance the photocatalytic activity and peroxymonosulfate (PMS) activation efficiency. Mn/G/D-5% composite displayed the excellent degradation performance of bisphenol A (BPA) with the removal efficiency of 99.9% under PMS/Vis system, which was approximately 2.47 and 63.8 times as high as that of the Mn/G/D-5%/PMS and Mn/G/D-5%/Vis system, respectively. Moreover, negative electricity derived from diatomite surface also promoted the photogenerated carriers’ migration, and the degradation rate constant was around 2.4 times higher than that of MnFe2O4/g-C3N4 (Mn/G). In addition, quenching experiments showed that both radical pathway (h+, ·OH, ·O2− and SO4·−) and non-radical pathway (1O2) were responsible for the degradation of BPA. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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