Large-scale synthesis of ultralong Bi2S3 nanoribbons via a solvothermal process

Ultralong Bi2S3 nanoribbons have been synthesized by a solvothermal process, using a mixture of aqueous NaOH solution and glycerol as the solvent. These nanoribbons (see Figure) are 50-300 nm wide, 20-80 nm thick, and up to several millimeters long, and the initial formation of the precursor polycrystalline NaBiS2 phase is crucial to their formation. nucleation and growth process was interpreted as a solid-solution-solid transformation.