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Syntheses of Nymphaea-like BiOCl with oxygen vacancies for effective removal of tetracycline hydrochloride.
- Source :
-
CrystEngComm . 6/21/2020, Vol. 22 Issue 23, p3956-3964. 9p. - Publication Year :
- 2020
-
Abstract
- Nymphaea-like BiOCl with oxygen vacancies (OVs) was successfully prepared by adjusting the pH of the precursor and using aspartic acid as a surfactant. The as-fabricated samples were investigated by the XRD, SEM, TEM, BET, DRS, PL and SPV techniques. The results reveal that the morphology of the as-prepared samples was self-assembled by thinner nanosheets. Moreover, the sample prepared at pH = 4 can remove 80% of tetracycline hydrochloride (TC, 10 mg L−1) in 1 h. This outstanding photocatalytic performance is attributed to the shorter migration distance of photo-induced carriers due to the thinner nanosheets and the high separation efficiency of photo-generated electron–hole pairs induced by OVs. Furthermore, the dominant free radicals in the present system were identified by trapping experiments and ESR methods. This work provides a new ideal to augment the photocatalytic activity of BiOCl through morphology control and defect engineering. [ABSTRACT FROM AUTHOR]
- Subjects :
- *TETRACYCLINE
*ASPARTIC acid
*FREE radicals
*OXYGEN
*SURFACE active agents
Subjects
Details
- Language :
- English
- ISSN :
- 14668033
- Volume :
- 22
- Issue :
- 23
- Database :
- Academic Search Index
- Journal :
- CrystEngComm
- Publication Type :
- Academic Journal
- Accession number :
- 143787104
- Full Text :
- https://doi.org/10.1039/d0ce00417k