Synthesis of SnO2 nanoparticles through the controlled precipitation route

By C. Ararat Ibarguen, A. Mosquera, R. Parra, M. Castro, J. Rodríguez-Páez. 2007

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Abstract The controlled precipitation method allowed to the synthesis of SnO 2 with advantageous specific properties, such as size and shape employing an aqueous SnCl 2 ·2H 2 O solution as precursor. Through XRD analyses, the optimum pH value of the solution that yielded the desired product was found to be 6.25. After a thermal treatment at 600 °C, the final powder presented an average particle size below 50 nm with a surface area of 19 m 2  g −1 and a large reactivity. The evolution of the most important functional groups during the steps involved in this synthesis route is explained in view of the results obtained with FTIR and XRD. A thorough discussion on the different intermediates involved in the whole process is presented on the basis of hydrolysis and condensation reactions. The conclusions are supported with a complete characterization through differential and gravimetric thermal analysis (DTA/TGA), electron microscopies (SEM/TEM) and surface area determinations (BET).

Subfields: Electrical and Electronic Engineering, Materials Chemistry, Polymers and Plastics

View Paper: https://www.semanticscholar.org/paper/37723ff035eef9307c3ae10be30d28d4b50d76ef