Controllable size of 1D Sb2Se3 nanorods prepared by a facile mixed solvothermal method with tartaric acid assistance
Sb2Se3 is easy to form 1D long rod-shaped structure due to the intrinsic property of orthorhombic Sb2Se3 crystal. Herein, 1D short rod-shaped Sb2Se3 was synthesized by a facile mixed solvothermal method with tartaric acid (TA) assistance and the mechanism of synthesis was illustrated. It was found that different sizes of the 1D Sb2Se3 nanorods could be achieved by controlling the reaction temperature and using THF as solvent to increase the reaction pressure. The reason that 1D long rod-shaped Sb2Se3 was obtained by adding sodium tartrate instead of tartaric acid was explained by coordination and dissociation equilibrium of antimony potassium tartrate. The effect of different amounts of TA on morphology was interpretated by precipitation-dissolution equilibrium of Sb2Se3. A effective method could be provided to control the size of Sb2Se3 nanorods.