AUTHOR=Jain Devendra , Shivani  , Bhojiya Ali Asger , Singh Himmat , Daima Hemant Kumar , Singh Mandeep , Mohanty Santosh Ranjan , Stephen Bjorn John , Singh Abhijeet 

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

JOURNAL=Frontiers in Chemistry

VOLUME=8

YEAR=2020

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2020.00778

DOI=10.3389/fchem.2020.00778

ISSN=2296-2646

ABSTRACT=<p>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 <italic>Serratia nematodiphila</italic>. 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.</p>