Feasible synthesis and physicochemical features of a luminescent cadmium-metal organic frameworks (Cd-MOFs) composite, and its functionalization as a turn-off sensor towards selective determination of bisphenol A in food, water, and paper products

• Published in: Microchemical journal Vol. 207; p. 112125
• Main Authors: Rashdan, Huda R.M., Batakoushy, Hany A., Magdy, Galal, Morsy, Mohamed, Elzwawy, Amir
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.12.2024
• Subjects: Bisphenol A; Detection; Fluorescence; Food industries; Metal-organic frameworks; Nano-sensors; Fluorescence; Bisphenol A; Nano-sensors; Food industries; Detection; Metal-organic frameworks
• ISSN: 0026-265X
• DOI: 10.1016/j.microc.2024.112125

[Display omitted] •Cd-MOFs composite was synthesized and physicochemical features were analyzed.•The determined BET surface area was found to be 25 cc/g with a nonporous composition.•Cd-MOFs demonstrated fluorescence emission at 470 nm after excitation at 320 nm.•Cd-MOFs composite was applied as a turn off nanosensor for the spectrofluorimetric determination of Bisphenol A in food industries for the first time.•The method's linearity was verified over the concentration range of 0.05–1.0 µg/mL with a limit of detection of 0.02 µg/mL. In the current study, a cadmium-metal organic frameworks (Cd-MOFs) structure was developed using a chemical process. The work comprised two main stages, initially inspection of the physicochemical features of the structure, and secondly, the application of the prepared Cd-MOFs as a turn-off nanosensor for the spectrofluorimetric determination of bisphenol A (BPA). Field emission scanning electron microscopy (FESEM) revealed the morphological features with the flake-like resembled shape. The elemental peaks for C, O, N, S, and Cd were residing as demonstrated by the energy-dispersive X-ray (EDX) results. The nonporous structure with a surface area of 25 cc/g was determined through the BET surface area results. The fluorescence spectra of Cd-MOFs demonstrated fluorescence emission at 470 nm after excitation at 320 nm. The quenching of the native fluorescence of Cd-MOFs was quantitatively and selectively produced by increasing concentrations of BPA. Therefore, Cd-MOFs have been applied as a turn-off nanosensor for the spectrofluorimetric determination of BPA, for the first time. The proposed approach validates linearity over the concentration range of 0.05–1.0 µg/mL with a detection limit of 0.01 µg/mL, signifying the method’s high sensitivity. Detection of low concentrations of BPA allowed for the real sample analysis in the food industries, including orange juice, tap water, infant feeding bottles, and food contact sheets. Moreover, The excellent eco-friendliness and greenness of the established approach were verified by employing the Analytical GREEnness (AGREE) and complementary Green Analytical Procedure Index (ComplexGAPI). The RGB 12 algorithm has functioned to prove the proposed method is greener, whiter, more sustainable, analytically effective, and less expensive than the reported ones. The proposed approach was validated according to ICH guidelines. This method presents a hopeful approach to quickly and accurately detect and quantify BPA in the food industry, which reinforces food safety and guards consumers’ health.