1. 毕业设计（论文）的内容和要求

空气质量在近些年来逐渐变差，像雾霾等现象频繁出现，严重干扰人们的生活，研究表明，长期处于低质量的空气中将产生头晕、乏力、烦闷、精神不振、注意力不集中等症状，甚至还将引发各种人体疾病。

空气中的颗粒物是指空气中充斥着的固体颗粒或者细小液滴，粒径在 1-10 μm的颗粒物称为 pm1-10，包括 pm2.5(粒径小于等于 2.5 μm)，以及粒径小于等于10 μm的pm10，而其中pm2.5又称为细颗粒物，对人体健康的危害较其他颗粒物更大，因为直径越小，进入呼吸道的部位越深，pm2.5可深入到细支气管和肺泡。

pm2.5的治理主要是采用控制源头的方法，降低其排放，但对于已经暴露在空气中的固体颗粒物的治理效果并不理想，因此制备一种高效可以降低空气中pm2.5浓度的膜材料迫在眉睫。

2. 参考文献

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3. 毕业设计（论文）进程安排

起讫日期 设计（论文）各阶段工作内容 备 注 2019.2.26-2019.3.10 熟悉课题、文献检索及阅读 2019.3.11-2019.3.17 英文文献翻译 2019.3.18-2019.4.1 开题报告，熟悉化学气相沉积操作，膜的相关表征手段 2019.4-2019.5 中期汇报 2019.6 整理数据，撰写论文