NaBH4-Mediated Co-Reduction Synthesis of Glutathione Stabilized Gold/Silver Nanoclusters for Detection of Magnesium Ions

The content of magnesium ions (Mg2+) in drinking water is relatively high and the excessive Mg2+ ingestion may lead to pathological lesions human body system. At present, detection still relies on costly devices or/and complex organic fluorescence probes. To solve this problem, work proposed a NaBH4-mediated co-reduction strategy for synthesis glutathione-stabilized bimetallic AuAg nanoclusters (GSH@AuAg NCs) with performance recognition Mg2+. preparation GSH@AuAg NCs was simple rapid could be performed at mild conditions. reaction parameters sampling orders were optimized understand formation mechanism NCs. exhibited sensitive “light on” response due re-molding interfacial physicochemical environment following coordination, which affected surface charge transfer process, thus led novel method admirable selectivity showed limit 0.2 μM, its practical utility real sample purified also demonstrated, confirming practicability monitoring concentration water.