Preparation and characterization of In_2O_3 nanorods

The precursors of In_2O_3 nanorods were prepared by sol-gel technology with the non-ionic surface active agent controlling their morphology.The In_2O_3 nanorods were gotten by the precursors heated at 500℃ for 1h.The length of the In_2O_3 nanorods was about 120nm and their diameter was about 20nm.According to the result of the comprehensive thermal-analysis(TG-DSC),the precursors were In_2O(OH)_4 dry gelatin which were formed by partly dehydrating In(OH)_3.The geometry arrangement parameter P of the non-ionic surface active agent is in 1/3～1/2 by calculating.The result confirmed that the micelle formed was claviform.At last the influencing factors and the formation mechanism were discussed.