Synthesis and Characterization ofIn2S3Nanorods in Sucrose Ester Water-in-Oil Microemulsion

摘要

We report the synthesis ofIn2S3nanorods in a nonionic sugar-based water-in-oil (w/o) microemulsion system using food grade sucrose ester as biosurfactant.In2S3was formed by mixing indium (III) chloride and thioacetamide in the water core of the microemulsion system. The as-prepared yellowishIn2S3was characterized by X-ray diffractometry (XRD), UV-visible absorption spectroscopy (UV-Vis), transmission electron microscopy (TEM), and Fourier transform infrared spectroscopy (FTIR). Formation of spherical or rod-likeIn2S3nanomaterials was dependent on reaction time. Rod-likeIn2S3, arranged in bundles, was formed only after 2 days of reaction time. Upon longer aging time, a mixture of rod-like and sphericalIn2S3was formed. A plausible formation mechanism of theIn2S3nanorods in the sucrose ester microemulsion was postulated. The diameter of theIn2S3nanorods was found to be very small, which is8.97±2.36 nm with aspect ratio of 20 : 1 (length : diameter).