Abstract
Luminescent Cd-MOF, [Cd (DPTTZ) (5-AIP)] (IUST-1) was used for detecting Cr2O72− anion and nitrobenzene (NB) in an aqueous solution. Cd-MOF was synthesized by the reaction of 5-Aminoisophthalic acid (5-AIP), 2, 5-di (pyridine-4-yl) thiazolo [5,4-d] thiazole (DPTTZ), and cadmium nitrate tetrahydrate, via the solvothermal method. The experimental results show that this compound represents significant fluorescence properties, which can be used as a fluorescence sensor for the detection of Cr2O72− anion and nitrobenzene (NB) in water. In addition, this Cd-MOF can perform selectively and sensitively toward these pollutants in presence of other interfering species, which is the main option of sensor materials. The quenching constant Ksv of Cr2O72−anion and NB are 3.314 × 104 M−1, 5.84 × 104 M−1 and the limit of detection values of Cr2O72−anion and NB are 2.6 × 10−6 M, 6.02 × 10−7 M, respectively. According to reusability studies, the luminescence property of IUST-1 didn't change significantly up to five cycles.
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