Journal
APPLIED NANOSCIENCE
Volume 10, Issue 7, Pages 2351-2364Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s13204-020-01414-x
Keywords
Magnesium oxide nanoparticles; Photocatalysts; Antibacterial potential; Green chemistry
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Funding
- Higher Education Commission, Pakistan (HEC) under the grant National Research Program for Universities (NRPU) [6498]
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Here, the synthesis of magnesium oxide (MgO) nanoparticles (NPs) was carried out by using Dalbergia sissoo leaf extract. The synthesis methodology was optimized by studying the effect of reaction parameters on the bandgap (E-g) values of the prepared MgO-NPs. The fabricated NPs were characterized by ultraviolet-visible spectroscopy (UV-Vis), Scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX) and X-ray diffraction spectroscopy (XRD). The photocatalytic potential of MgO-NPs was investigated by carrying out the degradation reaction of methylene blue (MB) dye. MgO-NPs with E-g value of 4.1758 eV were found to be most effective in terms of photocatalytic degradation of MB under various conditions. The antibacterial activity of MgO-NPs was also investigated by using the disc diffusion method. MgO-NPs with lower E-g values exhibited better antibacterial results in comparison to the MgO-NPs with higher E-g values. Enhanced antibacterial potential was observed against Escherichia coli, while moderate activity was documented against the strain of Ralstonia solanacearum. Thus, the engineered MgO-NPs exhibited excellent utility potential for multidimensional applications.
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