Development of nano indium tin oxide (ITO) grains by alkaline hydrolysis of In(III) and Sn(IV) salts

Bulletin of materials science

Prasanta Kumar Biswas¹  Nimai Chand Pramanik¹ 

[1]Sol-Gel Division, Central Glass and Ceramic Research Institute, Jadavpur, Kolkata 700 032, India$$Sol-Gel Division, Central Glass and Ceramic Research Institute, Jadavpur, Kolkata 700 032, IndiaSol-Gel Division, Central Glass and Ceramic Research Institute, Jadavpur, Kolkata 700 032, India$$

关键词: ITO nanoparticles;    alkaline hydrolysis;    thermal analysis;    FTIR and XRD studies.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Indium tin oxide (ITO) nano powders of different compositions (In : Sn = 90 : 10, 70 : 30 and 50 : 50) were prepared by heat treatment (300â€�??450°C) 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−SnO₃H₂ H₂O in the solid state and then they transformed to In₂O₃â€�?�SnO₂ via some metastable intermediates after 300°C. Cubic phase of In₂O₃ was identified by XRD for the oxides up to 30% of Sn. Particle size measurements of the solid dispersed in acetone and SEM study for microstructure showed that the oxides were in the nano range (55â€�??75 nm) whereas the size range determined from Debyeâ€�?�Scherrer equation were 11â€�??24 nm.

【 授权许可】

Unknown