Atomically Layered Bronze Nanoalloy Featuring Perpetual Aureolin Fluorescence Adept Microplastic Identification Less than 1 μm in Water

Nanoalloys have always been fascinating to the scientific community because of their promising physical and chemical properties. Focusing on the long-lasting properties of nanoalloys, we report the synthesis of a 2D layered bronze nanoalloy (LBNA) at room-temperature. The hybrid methodology implied is dependent upon hetero and homocatenation of Cu and Sn metal ions, utilizing orthoestering capabilities from trimethyl orthoformate (TMOF). The developed nanostructure inherits a mesmeric bronze color when seen under ambient light, and possesses a bright aureolin fluorescence under UV-illumination. The capability of synthesized bronze nanoalloy has been explored for time-dependent identification of <1 μm melamine based microplastic in drinking water and seawater. Increasing microplastic pollutants have caused various health issues, and environmental concerns have inspired this study. Both waste and reactive microplastics have surpassed permissible estimates. In aqueous conditions, the LBNA nanomaterial has shown a highly specific response toward melamine-based microplastic detection, which results in a change of emission toward blue color. The interaction mechanism strongly comprehends LBNA having rational bonding with melamine adducts in both drinking and seawater. The linearity response of LBNA has shown a record low period with an R2 of 0.9516 and an LOD of 0.03 PPM in drinking water. This size-specific melamine identification will enhance water quality and management.