Preparation of K_2Ti_4O_9 nanowhiskers via stearic acid method

摘要

K_2Ti_4O_9 nanowhiskers were synthesised via stearic acid method by using potassium hydroxide(KOH) and tetrabutyl titanate (Ti(OC_4H_9)_4) as raw materials. The effects of molar ratio oftetrabutyl titanate and KOH (R_(T/K)), calcination temperature (T_C) on composition, morphology ofproducts have been investigated.R_(T/K) showed a significant effect on length to diameter ratio(R_(L/D)) of the nanowhiskers. K_2Ti_4O_9 nanowhiskers with R_(L/D) greater than 20 were prepared atR_(T/K)=1 and T_C=850°C. Reaction mechanism of K_2Ti_4O_9nanowhiskers also has been studied.