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Syntheses of Nymphaea-like BiOCl with oxygen vacancies for effective removal of tetracycline hydrochloride

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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.

Graphical abstract: Syntheses of Nymphaea-like BiOCl with oxygen vacancies for effective removal of tetracycline hydrochloride

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Supplementary files

Article information


Submitted
19 Mar 2020
Accepted
01 May 2020
First published
01 May 2020

CrystEngComm, 2020, Advance Article
Article type
Paper

Syntheses of Nymphaea-like BiOCl with oxygen vacancies for effective removal of tetracycline hydrochloride

W. Hou, J. Yang, H. Xu, D. Li, Z. Zou and D. Xia, CrystEngComm, 2020, Advance Article , DOI: 10.1039/D0CE00417K

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