Morphology-controlled synthesis of Bi 2S 3 nanomaterials via single-and multiple-source approaches

Abstract

Bi 2S 3 nanomaterials of various morphologies, including nanorods, dandelion-like nanostructures, nanoleaves, nanoflowers, and nanocabbages were successfully synthesized from the single-source precursor Bi(SCOPh) 3 (1) or multiple-source precursors by using a colloidal solution method or hydrothermal method. The X-ray powder diffraction (XRPD) patterns show that the Bi 2S 3 belongs to the orthorhombic phase. Furthermore, the quantification by energy dispersive X-ray (EDX) analysis gives consistent results. Field emission scanning electron microscopy (FE-SEM) and transmission electron microscopic (TEM) studies reveal that the as-prepared Bi 2S 3 can be tuned to different morphologies. The interplay of factors that influenced the morphologies and sizes of the nanomaterials were studied. The possible reasons for the formation of Bi 2S 3 nanomaterials are also proposed. © 2008 American Chemical Society.