Preparation method and application of aerogel material

The invention discloses a preparation method of a TiO2/SnIn4S8/chitosan aerogel photocatalyst and an application of the TiO2/SnIn4S8/chitosan aerogel photocatalyst. TiO2/SnIn4S8 is taken as a material matrix, chitosan is taken as a structural framework, and the aerogel photocatalyst with an oriented pore channel structure is prepared by an oriented freezing method, so that the problem that a powder material is difficult to recover is solved, tetracycline can be effectively degraded and Cr (VI) can be effectively reduced under visible light, and the aerogel photocatalyst has good stability and repeatability and is suitable for industrial production. The method has a good prospect in actual water environment application. 本发明公开了一种TiO2/SnIn4S8/壳聚糖气凝胶光催化剂的制备及其应用。以TiO2/SnIn4S8为材料基体，以壳聚糖为结构框架，通过取向冷冻的方法制备一种具有取向孔道结构的气凝胶光催化剂，解决了粉体材料难回收的问题，并在可见光下能有效的降解四环素和还原Cr(Ⅵ)，并具有良好的稳定性和重复性，在实际水体环境应用中具有良好的前景。