Solvothermal synthesis of antimony sulfide dendrites for electrochemical detection of dopamine

Sb 2 S 3 dendrites composed of 1-dimensional rods were prepared by a facile solvothermal reaction. The dosage of the poly(acrylic acid) (PAA) morphology-controlling reagent and the reaction temperature are key factors determining the final morphology of the product. Temporal experiments revealed that the formation of Sb 2 S 3 dendrites experienced successive stages including precipitate reaction, crystallization and tip splitting. The as-prepared Sb 2 S 3 dendrites were further employed as sensing material for electrochemical detection of dopamine (DA). A cyclic voltammogram (CV) showed that an Sb 2 S 3 dendrite modified electrode enables the selective electro-oxidation of DA in the presence of ascorbic acid (AA). The constructed biosensor demonstrated a linear response range of 0.125160 M and a detection limit of 0.1 M, which suggests that the Sb 2 S 3 dendrites are promising sensing materials in the electrochemical analysis of DA. Sb 2 S 3 dendrites composed of 1-dimensional rods were prepared by a facile solvothermal reaction.