Doping of Mg on ZnO Nanorods Demonstrated Improved Photocatalytic Degradation and Antimicrobial Potential with Molecular Docking Analysis

Abstract

Various concentrations of Mg-doped ZnO nanorods (NRs) were prepared using co-precipitation technique. The objective of this study was to improve the photocatalytic properties of ZnO. The effect of Mg doping on the structure, phase constitution, functional groups presence, optical properties, elemental composition, surface morphology and microstructure of ZnO was evaluated with XRD, FTIR, UV–Vis spectrophotometer, EDS, and HR-TEM, respectively. Optical absorption spectra obtained from the prepared samples showed evidence of blueshift upon doping. XRD results revealed hexagonal wurtzite phase of nanocomposite with a gradual decrease in crystallite size with Mg addition. PL spectroscopy showed trapping efficiency and migration of charge carriers with electron–hole recombination behavior, while HR-TEM estimated interlayer d-spacing. The presence of chemical bonding, vibration modes and functional groups at the interface of ZnO was revealed by FTIR and Raman spectra. In this study, photocatalytic, sonocatalytic and sonophotocatalytic performance of prepared NRs was systematically investigated by degrading a mixture of methylene blue and ciprofloxacin (MBCF). Experimental results suggested that improved degradation performance was shown by Mg-doped ZnO NRs. We believe that the product synthesized in this study will prove to be a beneficial and promising photocatalyst for wastewater treatment. Conclusively, Mg-doped ZnO exhibited substantial (p < 0.05) efficacy against gram-negative (G-ve) as compared to gram-positive (G+ve) bacteria. In silico molecular docking studies of Mg-doped ZnO NRs against DHFR (binding score: − 7.518 kcal/mol), DHPS (binding score: − 6.973 kcal/mol) and FabH (− 6.548 kcal/mol) of E. coli predicted inhibition of given enzymes as possible mechanism behind their bactericidal activity.

MoS2/cellulose-doped ZnO nanorods for catalytic, antibacterial and molecular docking studies

“…These zinc traces could have formed as a result of the Zn precursor reacting with other reactants during the synthesis process. 35,36 The peaks emerging at 26.2° and ascribed to the (411) plane of hexagonal MoS 2 well matched with JCPDS card no. (37-1492).…”

“…Two additional peaks for all prepared samples flexing at 2θ°= 29.4° and 39.04° represent impurities of zinc carboxyl-containing compound (marked by blue arrow). These zinc traces could have formed as a result of the Zn precursor reacting with other reactants during the synthesis process[35,36]. The peaks emerging at 26.2° and ascribed to (411) plane of hexagonal MoS 2 , well matched with JCPDS card no.…”

Enhanced Bactericidal Action of rGO–ZnO Hybrids Prepared by the One-Pot Co-precipitation Approach

“… 44 − 46 A minor peak at 1386 cm –1 occurred due to the high fluorescent background. 47 Peaks at 1350 and 1590 cm –1 correspond to the D and G bands, respectively. The existence of sp 2 carbon is represented by the G peak, whereas the presence of disorder in the graphene structure is shown by the D peak.…”

Paraclostridium benzoelyticum Bacterium-Mediated Zinc Oxide Nanoparticles and Their In Vivo Multiple Biological Applications

“…Human living standards have also been raised as a result of nanotechnology's success in addressing a variety of daily challenges such as energy security, climate change, the beauty, textile, and health industries and the treatment of deadly diseases such as cancer and Alzheimer's disease [ 3 ]. Metal oxide nanoparticles (NPs) have been the subject of much research over the last decade, owing to their wide range of applications in a variety of technical sectors [ 4 ]. Due to their particular chemical and physical features, zinc oxide nanoparticles (ZnO-NPs), which are the most important metal oxide nanoparticles, are widely used in a wide range of industries [ 5 , 6 ].…”