Pramanik , Nimai Chand and Biswas, Prasanta Kumar (2002) Development of nano indium tin oxide (ITO) grains by alkaline hydrolysis of In(III) and Sn(IV) salts. Bulletin of Materials Science, 25 (6). pp. 505-507. ISSN 0250-4707

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Indium tin oxide (ITO) nano powders of different compositions (In : Sri = 90 : 10, 70 : 30 and 50 : 50) were prepared by heat treatment (300-450degreesC) of mixed hydroxides of In(III) and Sn(IV). The hydroxides were obtained by the reaction of aq. NH3 with mixed aq. solutions of In(NO3)(3) and SnCl4. FTIR and TG/DTA studies revealed that powders existed as In(OH)(3)(H2O)-H-.-(SnO3H2H2O)-H-. in the solid state and then they transformed to In2O3-SnO2 via some metastable intermediates after 300degreesC. Cubic phase of In2O3 was identified by XRD for the oxides up to 30% of Sri. Particle size measurements of the solid dispersed in acetone and SEM study for microstructure showed that the oxides were in the nano range (55-75 nm) whereas the size range determined from Debye-Scherrer equation were 11-24 nm.

Item Type: Article
Additional Information: National Conference on Frontiers in Materials Science and Technology, INDIAN INST TECHNOL, KHARAGPUR, INDIA, FEB 22-23, 2002
Uncontrolled Keywords: ITO nanoparticles; alkaline hydrolysis; thermal analysis; FTIR and XRD studies
Subjects: Electronics
Divisions: Sol Gel
Depositing User: Bidhan Chaudhuri
Date Deposited: 22 Mar 2012 12:31
Last Modified: 22 Mar 2012 12:31

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