Stable zinc metal-organic framework materials constructed by fluorenone carboxylate ligand: Multifunction detection and photocatalysis property

In this paper, we synthesized a zinc metal-organic framework material (Zn-MOF) based on fluorenone carboxylate ligand and studied the application of Zn-MOF in the fields of fluorescent detection and photocatalysis degradation. The experiment results show that it is a fluorescent probe that can quickly recognize organic solvent nitrobenzene (NB) from other solvents. The detection limit is 2.9 ​μM, and Ksv (quenching efficiency) is 3.547 ​× ​103 ​M−1. In particular, Zn-MOF can identify nitrobenzene derivatives, such as nitrophenol and nitrotoluene, and the quenching efficiency can reach 16.54% and 92.64%, respectively. Moreover, Zn-MOF can be used to detect metal ions and has high selectivity for Al3+ and Fe3+ ions. Competitive experiments show that other metal ions will not interfere with the detection. In addition, Zn-MOF can also be used as photocatalytic degradation of Rhodamine B (RhB), and the photodegradation efficiency of RhB can reach 85% within 3 ​h. The Zn-MOF not only has high selectivity and sensitivity for nitrobenzene, Al3+ and Fe3+ ions, but also can be used as photocatalytic degradation of Rhodamine B (RhB), and the photodegradation efficiency of RhB can reach 85% within 3 ​h. [Display omitted] •The Zn-MOF could recognize organic solvent nitrobenzene.•The Zn-MOF could be used to detect Al3+ and Fe3+ ions.•The Zn-MOF could be used as photocatalytic degradation of rhodamine B.