“…Based upon their distinct characteristics, NPs are categorized into different classes including-carbon and lipid based, metal, ceramics, semiconductor and polymeric (Bhatia, 2016;Ealias and Saravanakumar, 2017;Amoabediny et al, 2018;Khan et al, 2019). Different metal oxides like iron oxide, nickel oxide, zinc oxide, copper oxide, silver oxide, titanium dioxide, tin oxide, tungsten (di, tri) oxide, magnesium oxide, silicon and gold oxides have broad applications in the environment (detection of toxins and pollutants, remediation, photo degradation, water treatment), catalysis, textile industry, electronics (batteries, optical limiting devices, gas sensor), mechanical industries, pharmaceutical sector (cancer therapy, drug delivery, tissue repair) and energy scavenging (nanogenerators) (Oskam, 2006;Laurent et al, 2008;Kulkarni and Muddapur, 2014;Kumar et al,2018;Mei and Wu, 2018;Odularu, 2018;Aminabad et al, 2019;Khan et al, 2019;Khan et al, 2019;Malakootian et al, 2019;Massironi et al, 2019;Saleh et al, 2019;Shnoudeh et al, 2019;Vahed et al, 2019;Vasantharaj et al, 2019;Vinci and Rapa, 2019;Yusof et al, 2019;Borah et al, 2020;Hernández et al, 2020;Vahidi et al, 2020;Mughal et al, 2021). Out of these metal oxides nanoparticles, one of the preeminent biocompatible nanoparticles are iron oxides as they have magnificent minuscule physical characteristics like superparamagnetism, firmness in liquid solution, low suseptibility to oxidation, long blood half-lives, flexible surface chemistry with wide range of applications in environmental regulation like antibiotic degradation, adsorption of dyes, food related processes, biomedical (drug delivery, magnetic cell sorting, magnetic resonance imaging (MRI), magnetic particle imaging (MPI), immunoassays, tissue engineering, stem cell tracking, hyperthermia treatment of cancer), bioengineering, cosmetics and bio sensing along with antimicrobial activity against various pathogens like fungus, bacteria and ROS (Figure 1)…”