Photocatalytic degradation of unsymmetrical dimethylhydrazine on TiO/SBA-15 under 185/254 nm vacuum-ultraviolet.

In this work, TiO/SBA-15 was synthesized an hydrothermal method and was used for vacuum-ultraviolet (VUV) photocatalytic degradation of unsymmetrical dimethylhydrazine (UDMH) for the first time. Compared with photocatalysis under UV irradiation, VUV photocatalysis exhibited higher photodegradation efficiency due to the synergetic effect of direct photolysis, indirect photooxidation and photocatalytic oxidation. The synthesized TiO/SBA-15 catalysts exhibited ordered mesoporous structure and anatase phase TiO.