The selectively fluorescent sensing detection and adsorptive removal of Pb2+ with a stable [δ-Mo8O26]-based hybrid.

Graphical abstract Abstract A polyoxomolybdate based hybrid, [ δ -Mo 8 O 26 ](L) 2 ·2H 2 O (BUC-77), was synthesized via hydrothermal method, which exhibited selectively fluorescent detection and efficient adsorptive removal toward Pb2+ in aqueous environment. A good linearity was observed between the fluorescence quenching percentage of BUC-77 and the Pb2+ concentration, along with the detection limit being 6.91 ppb. BUC-77 was stable in common solvents and wide pH range, which could be regenerated by being washed with dilute inorganic acids like HNO 3 after adsorption of Pb2+. The results revealed that BUC-77 could be potentially used to achieve both detection and removal of Pb2+ in wastewater. [ABSTRACT FROM AUTHOR]