Co2+-Doped BiOBrxCl1-x hierarchical microspheres display enhanced visible-light photocatalytic performance in the degradation of rhodamine B and antibiotics and the inactivation of E. coli

Er-Chieh Cho; Cai-Wan Chang-Jian; Jen-Hsien Huang; Guang-Yu Lee; Wei-Hung Hung; Ming-Yen Sung; Kuen-Chan Lee; Huei Chu Weng; Wei-Lin Syu; Yu-Sheng Hsiao; Chih-Ping Chen

doi:10.1016/j.jhazmat.2020.123457

Co²⁺-Doped BiOBr_xCl_1-x hierarchical microspheres display enhanced visible-light photocatalytic performance in the degradation of rhodamine B and antibiotics and the inactivation of E. coli

J Hazard Mater. 2021 Jan 15:402:123457. doi: 10.1016/j.jhazmat.2020.123457. Epub 2020 Jul 13.

Authors

Affiliations

¹ School of Pharmacy, College of Pharmacy, Taipei Medical University, 250 Wuxing Street, Taipei City, 110, Taiwan.
² Department of Mechanical and Automation Engineering, I-Shou University, No. 1, Sec. 1, Syuecheng Road, Dashu District, Kaohsiung City 84001, Taiwan.
³ Department of Green Material Technology, Green Technology Research Institute, CPC Corporation, No. 2, Zuonan Road, Nanzi District, Kaohsiung City, 81126, Taiwan.
⁴ Department of Science Education, National Taipei University of Education, No. 134, Sec. 2, Heping E. Road, Da-an District, Taipei City, 106, Taiwan.
⁵ Department of Science Education, National Taipei University of Education, No. 134, Sec. 2, Heping E. Road, Da-an District, Taipei City, 106, Taiwan; PhD Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, 250 Wuxing Street, Taipei City, 110, Taiwan. Electronic address: [email protected].
⁶ Department of Mechanical Engineering, Chung Yuan Christian University, No. 200, Chungpei Rd, Chungli District, Taoyuan City, 32023, Taiwan. Electronic address: [email protected].
⁷ Department of Materials Engineering, Ming Chi University of Technology, 84 Gungjuan Road, Taishan District, New Taipei City, 24301, Taiwan.
⁸ Department of Materials Engineering, Ming Chi University of Technology, 84 Gungjuan Road, Taishan District, New Taipei City, 24301, Taiwan; Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan. Electronic address: [email protected].
⁹ Department of Materials Engineering, Ming Chi University of Technology, 84 Gungjuan Road, Taishan District, New Taipei City, 24301, Taiwan. Electronic address: [email protected].

PMID: 32712357
DOI: 10.1016/j.jhazmat.2020.123457

Abstract

In this article, we have synthesized Co²⁺-doped BiOBr_xCl_1-x hierarchical nanostructured microspheres, featuring different degrees of Co²⁺ doping, displaying excellent photocatalytic performance. X-ray diffraction and Raman spectroscopy indicated that the Co²⁺ ions were successfully doped into the BiOBr_xCl_1-x nanocrystals. The photodegradation rate of rhodamine B mediated by a doped BiOBr_xCl_1-x was 150 % greater than that of the non-doped BiOBr. We ascribe the improved photocatalytic capability of the Co²⁺-doped BiOBr_xCl_1-x to a combination of its superior degree of light absorption, more efficient carrier separation, and faster interfacial charge migration. The major active species involved in the photodegradation of RhB also has been investigated. Moreover, the doped BiOBr_xCl_1-x possessed excellent cellular biocompatibility and displayed remarkable performance in the photocatalytic bacterial inactivation.

Keywords: Antibiotic; BiOBr; Doping; E. coli bacteria; Photocatalyst.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Anti-Bacterial Agents* / pharmacology
Bismuth*
Catalysis
Escherichia coli*
Microspheres*
Rhodamines

Substances

Anti-Bacterial Agents
Rhodamines
rhodamine B
bismuth oxybromide
Bismuth