A novel micro/mesoporous Si/O/C/N quaternary composite aerogels were prepared for the first time and possessed efficient synergistic effect of physisorption and chemisorption. In the preparation process, a simple sol-gel method was applied to integrating nitrogen rich chitosan sol and tetraethoxysilane (TEOS) sol skillfully. The 2mm-thick Si/O/C/N composite adsorption layer was sandwiched into the acetate filter rod of control sample to form a test sample with high removal efficiency for volatile carbonyl compounds, especially for crotonaldehyde (75.9%) in mainstream cigarette smoke (MCS). The micro/mesoporous Si/O/C/N quaternary composite aerogels have brilliant prospect in the application of cigarette smoke filtration, water purification, etc.

首次制备了新型的微孔/中孔Si / O / C / N四元复合气凝胶，具有良好的物理吸附和化学吸附协同作用。在制备过程中，采用简单的溶胶-凝胶法将富氮壳聚糖溶胶和四乙氧基硅烷（TEOS）溶胶巧妙地进行了整合。将2mm厚的Si / O / C / N复合吸附层夹在对照样品的乙酸酯滤嘴棒中，以形成对挥发性羰基化合物，尤其是主流香烟烟雾中的巴豆醛（75.9％）具有高去除效率的测试样品（ MCS）。微孔/中孔Si / O / C / N四元复合气凝胶在卷烟过滤，净水等方面的应用前景广阔。