5月20日晚，公司大气污染控制及催化方向课题组的研究生同学进行了本学期第三次的学术交流活动，活动由2017级研究生贾冰阳主持，到场指导的老师有徐成华老师和刘盛余老师。

在学术交流活动中，贾冰阳同学汇报的内容是：介绍纳米零价铁这种纳米材料的特点，以及用于土壤修复可行性和优势，同时针对在实验过程中选择分散剂/稳定剂所面对的难题与老师和同学进行讨论，并且对后期零价纳米铁如何运用于土壤修复的工程方式做了设想；研一员工廖松介绍一篇文献，主要针对几种不同的氧化剂（Fenton试剂、过硫酸钠、硫酸二氢钾）对土壤中的有机污染物（多环芳烃）进行阐述，同学和老师们针对作者的实验方案，以及几种方法的运用成本进行讨论，受益匪浅。

本次学术交流活动中，老师和同学们各抒己见，提出问题的同时，也为实验研究的开展提供了新思路，对于同学们之后的科研工作具有指导意义。

最后感谢各位老师到场指导及各位同学汇报交流和到场聆听！

On the evening of May 20th, the second academic communication activity of air pollution control and catalysis is held by graduate students in this semester. Jia bingyang, a second-year master，hosted this event with the guidance of the Professor Xu and Professor Liu.

In the seminar, Jia bingyang reported the topic: the idea about studying NZVI (nanometer zero-valent iron) the characteristics of nanomaterials, and the feasibility and advantage used in soil restoration, at the same time to choose stabilizers in the experimental process of facing problems to discuss with teachers and classmates, and applied a vision how NZVI applied to soil restoration engineering; Liao song, a first-year graduate student, introduced a paper in which several different oxidants (Fenton reagent, sodium persulfate, potassium dihydrogen sulfate) were used to describe the organic pollutants (PAHs) in soil. Students and teachers discussed the author's experimental scheme and the application costs of several methods, which benefited a lot.

At the communication meeting, teachers and students expressed their own opinions, put forward problems as well, which provided new thoughts for following scientific research and had certain directive significance for our future experiments.

Finally, thanks for attendance and guidance from teachers as well as each student’s report and listening.