Simple synthesis of urchin-like In2S3 and In2O3 nanostructures

Without the assistance of any surfactant and template, Urchin-like In2S3 microspheres constructed with nanoflakes of about 15-30 run thickness were synthesized via the hydrothermal reaction of indium trichloride and thioacetamide in 6.25 vol.% acetic acid aqueous solution at 80 degrees C for 6-24 h. The as synthesized nanostructured In2S3 Could be completely transformed into In2O3 when subjected to heating in air at 600 degrees C for 5 h. The resultant In2O3 consisted of urchin-like microsphere built up by 20-30 nm thickness nanoflakes and 20-40 nm nanoparticles. X-ray diffraction, field emission scanning electronic microscope and energy dispersive X-ray spectroscopy have been used to characterize the In2S3 and In2O3 nanostructures obtained. (C) 2009 Elsevier B.V. All rights reserved.