A Two-Step Method to Synthesize BaSn(OH)6Crystalline Nanorods and Their Thermal Decomposition to Barium Stannate

摘要

A novel two-step technique is introduced to synthesize BaSn(OH)6 nanorods. The method involves the preparation of precursor Na2Sn(OH)6 crystals in aqueous solution via hydrothermal method and the ion-exchange reaction between Na2Sn(OH)6 crystals and Ba2+ solution that followed, assisted by ultrasonic treatment. The BaSn(OH)6 nanorods array are formed due to the split of plate-formed Na2Sn(OH)6 during the ion-exchange treatment. The influence of the surfactant on the growth of the one-dimensional (1D) BaSn(OH)6 nanostructures is investigated. In addition, the powder BaSnO3 has been obtained by thermal treatment at 450°C for 5 h under inert gas protecting condition using BaSn(OH)6 nanorods as precursor. The 1D shape of BaSn(OH)6 was retained after thermal treatment.