Electroreduction of Acetochlor at Silver Cathodes in Aqueous Media
Electroreduction of Acetochlor at Silver Cathodes in Aqueous Media
复制标题
乙草胺在水介质中银阴极的电还原
DOI：
10.1149/1945-7111/ac13d6
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发表时间：
2021
影响因子：
3.9
通讯作者：
Baker, Lane A.
中科院分区：
文献类型：
--
作者：
Couto Petro, Ana G.;Scherschel, Nicholas F.;Baker, Lane A.
我们报告乙草胺在水介质中的银阴极的电还原，以提供有关的见解，作为一个实际应用的卤代有机污染物的修复。采用循环伏安法测定乙草胺在水中的电化学行为，作为pH值的函数。采用电解作为本体还原的手段，同时考虑恒电位（CPE）和恒电流电解（CCE）。CPE提供高选择性，并且优选用于机理分析，然而，完全还原需要长的电解时间。相比之下，CCE被发现提供了一种替代快速电还原乙草胺，与警告，电流密度必须仔细选择，以保持对竞争反应（例如，质子还原）的选择性。此外，还探讨了细胞构型（分裂与未分裂）的影响。最后，一个未分割的平行板流动池，在单程，用于流动CCE。为获得最佳结果，考虑了施加电流、流速和极间间隙的影响。
We report electroreduction of acetochlor at silver cathodes in aqueous media to provide insight related to electroreduction as a practical application for remediation of haloorganic pollutants. Cyclic voltammetry was used to determine the electrochemical behavior of acetochlor in water as a function of pH. Electrolysis was employed as a means for bulk reduction, with both constant-potential (CPE) and constant-current electrolysis (CCE) considered. CPE offers high selectivity and is preferred for mechanistic analysis, however, long electrolysis times are required for complete reduction. In contrast, CCE was found to provide an alternative for fast electroreduction of acetochlor, with the caveat that current densities must be chosen carefully, to retain selectivity against competing reactions (eg, proton reduction). In addition, the effect of cell configuration (divided vs undivided) was explored. Finally, an undivided parallel-plate flow cell, in single pass, was employed for flow CCE. The effect of applied current, flow rate, and interelectrode gap were considered for optimal results.