Ligand-Assisted Sequential Redox Degradation of Tetrabromobisphenol A Using Bimetallic Zero-Valent Iron Nanoparticles
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SCOPUS
- Title
- Ligand-Assisted Sequential Redox Degradation of Tetrabromobisphenol A Using Bimetallic Zero-Valent Iron Nanoparticles
- Authors
- Lee, Chung-Seop; Oh, Da-Som; Le, Thao Thanh; Gong, Jianyu; Chang, Yoon-Seok
- Date Issued
- 2018-12
- Publisher
- AMER CHEMICAL SOC
- Abstract
- This study presents a sequential reduction-oxidation (redox) process composed of a reduction process using bismuth-modified zerovalent iron nanoparticles (Bi/Fe-0 NPs) and a ligand-enhanced oxidation process for the complete removal of tetrabromobisphenol A (TBBPA). In the first reduction process, TBBPA was reductively degraded to bisphenol A (BPA) by Bi/Fe-0 NPs. In the subsequent oxidation process, citric acid (CA) was used to enhance the oxidation capability for degradation of BPA over Bi/Fe-0 NPs in the presence of oxygen, thereby completely degrading TBBPA. The addition of CA to oxygen-containing solution of Bi/Fe-0 NPs significantly promoted the production of reactive oxygen species (ROS) by accelerating the rate of key reactions through its ligand function, which could form an Fe(III)-citrate complex. The intermediates formed during the sequential redox treatment were identified, and the plausible degradation pathway of TBBPA was proposed. These results provide a new strategy for degradation of various recalcitrant pollutants.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/95453
- DOI
- 10.1021/acs.iecr.8b03991
- ISSN
- 0888-5885
- Article Type
- Article
- Citation
- INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, vol. 57, no. 51, page. 17329 - 17337, 2018-12
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