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Facile construction of novel organic-inorganic tetra (4-carboxyphenyl) porphyrin/Bi2MoO6 heterojunction for tetracycline degradation: Performance, degradation pathways, intermediate toxicity analysis and mechanism insight.

Authors
  • Wang, Chunchun1
  • Cai, Mingjie1
  • Liu, Yanping2
  • Yang, Fang3
  • Zhang, Huiqiu1
  • Liu, Jianshe4
  • Li, Shijie5
  • 1 Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, National Engineering Research Center for Marine Aquaculture, College of Marine Science and Technology, Zhejiang Ocean University, Zhoushan, Zhejiang Province, 316022, China. , (China)
  • 2 Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, National Engineering Research Center for Marine Aquaculture, College of Marine Science and Technology, Zhejiang Ocean University, Zhoushan, Zhejiang Province, 316022, China. Electronic address: [email protected] , (China)
  • 3 School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai, 201620, China. , (China)
  • 4 State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China. , (China)
  • 5 Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, National Engineering Research Center for Marine Aquaculture, College of Marine Science and Technology, Zhejiang Ocean University, Zhoushan, Zhejiang Province, 316022, China. Electronic address: [email protected] , (China)
Type
Published Article
Journal
Journal of Colloid and Interface Science
Publisher
Elsevier
Publication Date
Jan 01, 2022
Volume
605
Pages
727–740
Identifiers
DOI: 10.1016/j.jcis.2021.07.137
PMID: 34365309
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

Developing durable photocatalysts with highly efficient antibiotics degradation is crucial for environment purification. Herein, tetra (4-carboxyphenyl) porphyrin (TCPP) was loaded onto the surface of Bi2MoO6 microspheres to gain hierarchical organic-inorganic TCPP/Bi2MoO6 (TCPP/BMO) heterojunctions via a facile impregnation strategy. The catalytic properties of these catalysts were comprehensively investigated through the photodegradation of tetracycline hydrochloride (TC) under visible light. Among all the TCPP/BMO heterojunctions, the highest photodegradation rate constant (0.0278 min-1) was achieved with 0.25 wt% TCPP (TCPP/BMO-2), which was approximately 1.15 folds greater than that of pristine Bi2MoO6 and far superior to pure TCPP. The extremely high photocatalytic performance is attributed to the interfacial interaction between TCPP and Bi2MoO6, which favors the efficient separation of charge carriers and the enhancement of visible-light absorbance. TCPP/BMO-2 possesses high mineralization capability and good recycling performance. Photo-induced O2-, h+, and OH were mainly responsible for the degradation of TC. The degradation pathways of TC and toxicity of degradation intermediates were analyzed based on the intermediates detected by the high performance liquid chromatography-mass spectrometer (HPLC-MS) and the toxicity assessment by the quantitative structure-activity relationship (QSAR) prediction. A possible photocatalytic mechanism over TCPP/BMO is proposed. This work offers an insight in developing the porphyrin-based organic-inorganic heterojunctions for effectively remedying pharmaceutical wastewater. Copyright © 2021 Elsevier Inc. All rights reserved.

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