Structural, optical, and electrochemical investigations of sb-substituted mesoporous SnO2 nanoparticles

• Published in: Journal of materials science. Materials in electronics 2021-02, Vol.32 (4), p.4132-4145
• Main Authors: Blessi, S., Anand, S., Manikandan, A., Sonia, M. Maria Lumina, Vinosel, V. Maria, Slimani, Y., Almessiere, M. A., Baykal, A.
• Format: Article
• Language: English
• Subjects: Antimony; Characterization and Evaluation of Materials; Charge transfer; Chemistry and Materials Science; Dioxides; Ethanol; Indium tin oxides; Materials Science; Nanoparticles; Optical and Electronic Materials; Optical properties; Particle size; Porosity; Radiation; Tin dioxide
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-020-05155-z

In this study, the effect of the substitution of various proportions of Antimony (Sb) on mesoporous tin dioxide was analyzed. The structural study of XRD confirmed the solubility of Sb (upto 5 mol%) in the parent matrix. The structural and morphological studies confirmed a decrease in particle size with increasing proportion of Sb. The porosity and the surface area were evaluated by N 2 adsorption–desorption isotherms. Moreover, porosity studies indicated that the addition of Sb did not affect the mesoporous nature of the parent tin dioxide. The optical properties showed a transparent behavior in the visible region. A sharp and well-defined redox peaks were observed in cyclic voltammograms. This can be explained by the occurrence of faster kinetic process in the material doped with higher percentage of Sb which showed a lower charge transfer resistance ( R CT ).