TiO_(2)/三聚氰胺海绵的制备与光催化性能

Preparation and photocatalytic properties of TiO_(2)/melamine sponge monolith

针对纳米光催化材料在使用中难以回收的问题,以三聚氰胺海绵(MS)为载体和骨架,采用水热法制备了TiO_(2)/MS(TM)整体型光催化复合材料。通过XRD、FT-IR、SEM、UV-Vis DRS等分析手段对材料进行表征,研究水热时间对TM光催化性能的影响。结果表明:水热时间为16 h,TM的结构完整,TiO_(2)负载牢固;对亚甲基蓝(MB)在120 min光照后的降解率达99.3%,重复使用具有较高的稳定性。TiO_(2)与MS的有效结合,增强了TiO_(2)的分散程度和光照利用率,提高了TM的光催化性能,有利于回收光催化材料。

Due to the nano-photocatalysts are difficult to recycle in application,TiO_(2)/melamine sponge monolith(TM)photocatalysts composite were successfully prepared by hydrothermal method using melamine sponge(MS)as the carrier and framework.The TMs were characterized by XRD,FT-IR,SEM,UV-Vis DRS and other analytical methods.The effect of hydrothermal time on the photocatalytic performance of TM was studied.The results show that the TM has integrated structure and TiO_(2) is firmly attached when the hydrothermal time is 16 h.The degradation rate of methylene blue(MB)after 120 min irriadiation reaches 99.3%.TM has a high stability of repeated use.The effective combination of TiO_(2) and MS enhances the dispersion and light utilization rate of TiO_(2),thereby improving the photocatalytic performance of TM and facilitating recycling.