Abstract
Zinc stannate (ZTO) NPs were prepared hydrothermal for 20 hours at 200 ᵒC. Structural, morphological, and optical properties of the ZTO NPs were studied for different zinc salt types (ZnSO4.7H2O, Zn(CH3COO)2.2H2O, and Zn (NO3)2•6H2O). The X-ray diffraction studies showed the crystalline nature with a spinel crystal structure of the ZTO nanostructure. FE-SEM image showed spherical morphology with the formation of a network of aggregates. The transmittance spectra were recorded at wavelengths ranging from 200 nm to 1200 nm. In particular, their optical band gap energies were 3.65, 3.85, and 3.8 eV for three zinc salts of ZTO (ZnSO4.7H2O, Zn(CH3COO)2.2H2O, Zn (NO3)2.6H2O), respectively. The MIC showed the ZTO NPs for zinc salt ZnSO4.7H2O in Volumetric dilution 3.125% and 12.5 was more effective against Escherichia coli and Staphylococcus aureus from another zinc salt of ZTO NPs. Inhibition Zone assessed ZTO NPs' antibacterial efficacy against Staphylococcus aureus and Escherichia coli. With three concentrations of ZTO, the test showed that ZTO NPs have a stronger antibacterial activity against gram-positive bacteria than gram-negative bacteria. The antibacterial activity of zinc salt ZnSO4.7H2O was found to be 32 against Escherichia coli and 19 nm against Staphylococcus aurous, it was more effective than other zinc salt of ZTO NPs.
Published Version
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