Synthesis and Characterization of SnO2 and SnO2/ZnO Nanoparticles by Electrochemical Method: Evaluation of their Performance in Photodegradation of Indigo Carmine Dye and Antibacterial Activity

K.P. Samskruthi1,*, Sannaiah Ananda1,*, M.B. Nandaprakash2 and K.S. Chandrakantha3

1Department of Studies in Chemistry, University of Mysore, Mysuru-570005, India

2Department of Physics, Yuvraja′s College, Mysuru-570005, India

3Department of Materials Science, Mangalore University, Mangalagangothri D.K.-574199, India

*Corresponding authors: E-mail:


SnO2 and SnO2/ZnO nanoparticles were synthesized by the electrochemical method. The synthesized nanoparticles were characterized by XRD, UV-VIS, IR, FE-SEM and EDAX techniques. The X-ray diffraction revealed that the average crystalline size to be 79.78 and 22.84 nm. The band gap of SnO2/ZnO nanoparticle from Tauc′s plot was found to be 2.196 eV. The photocatalytic degradation of Indigo carmine dye follows the first order reaction. The antibacterial activity of SnO2 and SnO2/ZnO nanoparticles against Staphylococcus aureus and Escherichia coli was investigated.


Nanoparticles, Electrochemical method, Photocatalytic activities, Indigo carmine, Biological activity.

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