Microbial Fabrication of Zinc Oxide Nanoparticles and Evaluation of Their Antimicrobial and Photocatalytic Properties

Abstract

Zinc oxide (ZnO) nanoparticles have attracted significant interest in a number of applications ranging from electronics to biomedical sciences due to their large exaction binding energy (60 meV) and wide bandgap of 3.37 eV. In the present study, we report the low-cost bacterium based "eco-friendly" efficient synthesis of ZnO nanoparticles by using the zinc-tolerant bacteria Serratia nematodiphila. The physicochemical characterization of ZnO nanoparticles was performed by employing UV-vis spectroscopy, XRD, TEM, DLS, Zeta potential, and Raman spectroscopy. The antimicrobial and antifungal studies were investigated at different concentrations using the agar well-diffusion method, whereby the microbial growth rate decreases with the increase in nanoparticle concentration. Further, photocatalytic performance studies were conducted by taking methyl orange (MO) as a reference dye.

Promising antimicrobial and antibiofilm activities of reduced graphene oxide-metal oxide (RGO-NiO, RGO-AgO, and RGO-ZnO) nanocomposites

“…13,14 Previous studies have reported that RGO has antimicrobial activity, [15][16][17] and GO when conjugated with active ingredients exhibits antimicrobial and antinematodal activities. 18,19 Furthermore, metal and metal oxide nanoparticles, such as silver, [20][21][22] zinc oxide, [23][24][25] and nickel oxide, 26,27 are widely used as antimicrobials, and a silver boron nano-formulation is a potential nematicide. 28 Furthermore, RGO-based metal oxide nanocomposites have garnered much attention as antimicrobials in the last few years.…”

Bio-Fabrication of Human Amniotic Membrane Zinc Oxide Nanoparticles and the Wet/Dry HAM Dressing Membrane for Wound Healing

“…Candida albicans biofilm formation was also inhibited by the CS/Ag/ZnO nanocomposite at 50 μg mL –1 (92%) ( Thaya et al, 2016 ; Vijayakumar et al, 2019 ). Jain et al (2020) successfully synthesized ZnO nanoparticles that had excellent antimicrobial activity and applicability against Xanthomonas oryzae pv. oryzae and Alternaria sp.…”

Microbe-Mediated Biosynthesis of Nanoparticles: Applications and Future Prospects

“…In a recent report, Jain et al, 2020 biosynthesized ZnONPs using the zinc-resistant bacterium Serratia nematodiphila and, in vitro, tested the antimicrobial activity of ZnONPs against Xanthomonas oryzaepv. oryzae [ 224 ]. Xanthomonas oryzaepv.…”