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阿特拉津是一种持久性含氯有机污染物,难以生物降解,因此有必要开发高效技术清除环境中残留的阿特拉津.近来纳米铁材料的发展为降解阿特拉津提供了一种可供选择的新方法,但降解过程中纳米铁活性逐渐减弱的问题仍需改进.本论文研究了铜离子(Cu~(2+))存在条件下Fe@Fe_2O_3纳米线活化分子氧降解阿特拉津的过程,并探讨了Cu~(2+)的作用机理.研究结果表明,少量Cu~(2+)的存在就可以显著促使Fe@Fe_2O_3生成溶解态Fe(Ⅱ),从而有助于分子氧活化并产生更多·OH等活性氧物种.在降解过程中,阿特拉津首先被氧化,进而发生脱氯上羟基反应、侧链氧化以及脱侧链反应.
Atrazine is a persistent chlorine-containing organic pollutant that is difficult to biodegrade, so it is necessary to develop efficient techniques to remove the residual atrazine in the environment.More recently, the development of nano-iron materials to provide a However, there is still a need for improvement in the degradation of the activity of the nano-iron during the degradation process.In this paper, the degradation of activated oxygen molecules by Fe @ Fe_2O_3 nanowires in the presence of copper ions (Cu 2+) The mechanism of Cu 2+ was discussed. The results showed that the presence of a small amount of Cu 2+ could significantly promote the formation of Fe (Ⅱ) by Fe @ Fe_2O_3, At the molecular oxygen activation and produce more · OH and other reactive oxygen species in the degradation process, atrazine was first oxidized, and then dechlorination hydroxyl reaction, side chain oxidation and de-side chain reaction.