https://scholars.lib.ntu.edu.tw/handle/123456789/561270
標題: | Fe<sup>2+</sup>/HClO Reaction Produces Fe<sup>IV</sup>O<sup>2+</sup>: An Enhanced Advanced Oxidation Process | 作者: | Liang, S. Zhu, L. Hua, J. Duan, W. Yang, P.-T. Wang, S.-L. Wei, C. Liu, C. Feng, C. SHAN-LI WANG |
公開日期: | 2020 | 卷: | 54 | 期: | 10 | 起(迄)頁: | 6406-6414 | 來源出版物: | Environmental Science and Technology | 摘要: | The reaction between Fe2+ and HClO constitutes a promising advanced oxidation process (AOP) for removing pollutants from wastewater, and â¢OH has been considered the dominant reactive oxidant despite limited evidence for this. Herein, we demonstrate that the Fe2+/HClO reaction enables the production of FeIVO2+ rather than â¢OH in acid medium, a finding that is strongly supported by multiple lines of evidence. Both X-ray absorption near-edge structure spectroscopic tests and Mössbauer spectroscopic tests confirmed the appearance of FeIVO2+ as the reactive intermediate in the reaction between Fe2+ and HClO. The determination of FeIVO2+ generation was also derived from the methyl phenyl sulfoxide (PMSO)-based probe experiments with respect to the formation of PMSO2 without â¢OH adducts and the density functional theory studies according to the lower energy barrier for producing FeIVO2+ compared with â¢OH. A dual-anode electrolytic system was established for the in situ generation of Fe2+ and HClO that allows the production of FeIVO2+. The system exhibits an enhanced capacity for oxidizing a model pollutant (e.g., phosphite) from industrial wastewater, making it an attractive and promising AOP for the abatement of aqueous contaminants. © 2020 American Chemical Society. |
URI: | https://www.scopus.com/inward/record.url?eid=2-s2.0-85084915239&partnerID=40&md5=f5cf8e575f60c3f0d2f56f285d95202f https://scholars.lib.ntu.edu.tw/handle/123456789/561270 |
DOI: | 10.1021/acs.est.0c00218 | SDG/關鍵字: | Absorption spectroscopy; Chlorine compounds; Density functional theory; Iodine compounds; Iron compounds; Pollution; Reaction intermediates; X ray absorption; X ray absorption near edge structure spectroscopy; Advanced oxidation process; Advanced Oxidation Processes; Density functional theory studies; Electrolytic system; Industrial wastewaters; Lower energy barriers; Reactive intermediate; X ray absorption near edge structure; Vanadium compounds; ferrous ion; hydroxyl group; hypochlorous acid; magnetite; phosphite; sulfoxide; oxidizing agent; electrode; energy efficiency; industrial waste; iron; oxidation; pollutant removal; reaction kinetics; wastewater treatment; aqueous solution; Article; controlled study; density functional theory; electrolysis; energy; Mossbauer spectroscopy; oxidation; waste water; water pollutant; X ray absorption near edge structure spectroscopy; oxidation reduction reaction; Oxidants; Oxidation-Reduction; Spectroscopy, Mossbauer |
顯示於: | 農業化學系 |
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