水热法制备仿生TiO_(2)及其光催化性能研究

Preparation of biomimetic TiO_(2) by hydrothermal method and its photocatalytic performance

利用芋头茎作为生物模板,通过水热法制备得到具有特殊形态的纳米二氧化钛。通过考察钛酸四丁酯的浓度、油浴时间、油浴温度、煅烧温度、煅烧时间,以二氧化钛催化剂在664nm波长下,对亚甲基蓝的降解率作为指标。结果表明:钛酸四丁酯的最佳浓度0.33mol/L、油浴时间5h、油浴温度为150℃、煅烧温度400℃和煅烧时间5h条件下制备的仿生二氧化钛催化剂的催化性能较好,90min内降解率高达98.91%。

Using taro stem as a biological template,nano-titanium dioxide with special morphology was prepared by hydrothermal method.By examining the concentration of tetrabutyl titanate,oil bath time,oil bath temperature,calcination temperature and calcination time,the degradation rate of methylene blue by titanium dioxide catalyst at a wavelength of 664nm was taken as an index.The results showed that the biomimetic titanium dioxide catalyst prepared under the optimal conditions of tetrabutyl titanate concentration of 0.33mol/L,oil bath time of 5h,oil bath temperature of 150℃,calcination temperature of 400℃and calcination time of 5hhad better catalytic performance,and the degradation rate was as high as 98.91%within 90min.