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Degradation of tetracycline in a schorl/H2O2 system: Proposed mechanism and intermediates
Chemosphere ( IF 8.1 ) Pub Date : 2018-03-20 , DOI: 10.1016/j.chemosphere.2018.03.116
Yihan Zhang , Jing Shi , Zhengwen Xu , Yue Chen , Duanmei Song

Schorl could perform as an extremely promising catalyst for decomposing tetracycline hydrochloride (TC) due to its high degradation efficiency, low cost, chemical stability, easy recovery and repeatable utilization. Comparisons of TC degradation indifferent systems showed that schorl/H2O2 system exhibited the optimum pollutant elimination and TOC removal efficiencies. Kinetics and possible mechanisms of TC degradation were clarified. The

OH generated on the schorl surface and O2radical dot/HO2radical dot were the main reactive species responsible for TC oxidation. Six possible intermediates were identified, and possible transform mechanisms and pathways were explored. Active radicals were inclined to attack the Cdouble bond; length as m-dashC double bond, dimethylamino and phenolic moieties of TC molecular. The principal intermediate products were generated through N-demethylation, oxidation and rearrangement.


中文翻译:

schorl / H 2 O 2系统中四环素的降解:建议的机理和中间体

由于Schorl具有较高的降解效率,低成本,化学稳定性,易于回收和可重复利用的特性,因此它可以作为分解四环素盐酸盐(TC)的极有希望的催化剂。TC降解不同系统的比较表明,schorl / H 2 O 2系统表现出最佳的污染物去除和TOC去除效率。阐明了TC降解的动力学和可能的机理。这

OH的金红石表面和O上产生2 -激进点/ HO 2激进点是负责TC氧化的主要反应物种。确定了六个可能的中间体,并探讨了可能的转化机制和途径。活跃的激进分子倾向于攻击C双键  长度为m-破折号TC分子的C双键,二甲氨基和酚部分。主要的中间产物是通过N-去甲基化,氧化和重排生成的。
更新日期:2018-03-20
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