| Autor: |
Sun, Jiayu1 (AUTHOR), Li, Bihan2 (AUTHOR), Wang, Qi1 (AUTHOR), Zhang, Ping1 (AUTHOR), Zhang, Yulei1 (AUTHOR), Gao, Li3 (AUTHOR), Li, Xiaochen1 (AUTHOR) lixiaochen02@163.com |
| Předmět: |
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| Zdroj: |
Environmental Technology. Nov 2021, Vol. 42 Issue 26, p4104-4114. 11p. |
| Abstrakt: |
In this study, a highly efficient and stable phosphorus-doped Tungsten trioxide (P-WO3) photocatalyst was successfully synthesized using a combination of hydrothermal and post-calcination method. The microstructures, morphologies and optical properties of the obtained WO3 and P-WO3 samples were characterized. The results showed that P was uniformly doped into the WO3 lattice in a pentavalent-oxidation state (P5+). The charge carrier traps were also formed, which could accept the photoelectrons. Furthermore, the band gap energy was reduced from 2.4 to 2.33 ev. The photocatalytic performance of the obtained P-WO3 samples with different P concentrations were then tested by photocatalytic degradation of methyl blue (MB). It was found that the 6%-P-WO3 sample exhibited the highest photocatalytic activity, with 96% of MB being able to be degraded within 120 min, which was more than four times higher than that of the pure WO3. The practicality of the prepared P-WO3 was also evaluated using samples from two domestic wastewater treatment plants. The P-WO3 had a high photodegradation performance in treating low concentration of organic matters from real wastewater. The photocatalysis of P-WO3 could be mainly initiated by the production of hydroxyl radical (·OH) and photogenerated hole (h+). [ABSTRACT FROM AUTHOR] |
| Databáze: |
GreenFILE |
| Externí odkaz: |
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