Limonia acidissima fruit juice mediated eco-friendly synthesis of pervoskite ZnSnO3 nanoparticles: Applications to photocatalytic, electrochemical, antioxidant and antibacterial activities

[Display omitted] •A green chemistry route is employed to synthesize Pervoskite ZnSnO3 NPs with limonia acidissima natural fruit extract.•ZnSnO3 NPs shows a very good photocatalytic activity in the degradation of carcinogenic organic dyes such as methylene blue.•Anti-oxidant activity of the ZnSnO3 NPs, confirmed that it is having the ability to scavenge reactive oxygen and nitrogen species.•For the first time, antioxidant studies were carried out for the synthesized ZnSnO3 NPs.•The ZnSnO3 NPs showed antibacterial properties against diverse tested strains, food pathogens tested was found to be potent against Staphylococcus aureus and Pseudomonas fluorescens.•Finally, it detected the trace amounts of K3[Fe(CN)6] with detection limit upto 38 µL which is useful in evaluating Fe2+ conconcentration in various biological samples. In anticipation toa growing desire for start-ups to be both green and sustainable, there has been an increase in research focus on the effective removal and degradation of toxic wastewater effluents. A viable and sustainable wastewater treatment method is the use of light to degrade organic contaminants. Photocatalysis holds great potential for addressing environmental, energy, and health challenges, offering sustainable solutions for a wide range of applications with significant societal and economic benefits. In this paper, a multicomponent heterostructure photocatalyst ZnSnO3 was designed and prepared via a simple environmentally responsible path, which included the use of limonia acidissima natural fruit juice as a capping and reducing agent. The ZnSnO3 nanoparticles that were generated were examined using XRD, FT-IR, UV-DRS, SEM-EDAX, TEM, PL and BET investigations. The structure and crystallographic parameters were examined using XRD analysis, and found that the crystallite had orthorhombic geometry. The functional groups were investigated using FTIR spectroscopy. The band gaps (3.59 & 3.69 eV) were estimated using a Tauc plot employing the data of UV-DRS. According to SEM and TEM studies, the morphologies are irregular in shape and have particles that are about 14 nm in size. EDAX analysis was used to determine the elemental composition of the examined ZnSnO3 nanostructures, which demonstrated their purity. Using PL spectroscopy, superficial defects were investigated. The synthesized NPs were used as photocatalysts to degradethe methylene blue dye. Electrochemical measurement of K3[Fe(CN)6] revealed a good sensory activity with a