A novel bimetallic MOFs combined with gold nanoflakes in electrochemical sensor for measuring bisphenol A. Issue 52 (25th November 2022)

• Record Type: Journal Article
• Authors: Nguyen, Manh B.; Anh, Nguyen Hai; Thi Thu, Vu; Thi Hai Yen, Pham; Hong Phong, Pham; Quoc Hung, Le; Ngan, Nguyen Thi Thanh; Hai, Tran Quang; Thi Thu Ha, Vu
• Is Part Of: RSC advances. Volume 12:Issue 52(2022)
• Page Start: 33825
• Page End: 33834
• Publication Date: 2022-11-25
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d2ra06300j
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : This work demonstrated the fabrication of bimetallic Fe–Cu-BTC which able to provide large surface area, good electrocatalytic efficiency in combination with gold nanoparticles (flakes shapes) in order to detect bisphenol A in water samples. Abstract : In this paper, a novel bimetallic Fe–Cu metal–organic framework combined with 1, 3, 5-benzenetricarboxylic acid (Fe–Cu-BTC) are synthesized using hydrothermal reaction. The bimetallic Fe–Cu-BTC with high BET (1504 cm 3 g −1 ) and high Langmuir surface area (1831 cm 3 g −1 ) is composited by gold nanoparticles to improve the conductivity and to develop their synergistic effect. A novel bisphenol A (BPA) sensor was prepared by dropcasting Fe–Cu-BTC on glassy carbon electrodes (GCE) followed by AuNPs electrodeposition. The Fe–Cu-BTC framework were characterized by X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy studies (TEM), FT-IR, BET measurements and EDX spectra. Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) were carried out for surveying the electrochemical properties of the sensors and for the quantification of BPA. Two linear ranges of BPA concentrations 0.1–1.0 μM and 1.0–18 μM with 18 nM limit of detection were obtained. The developed sensor was used to measure the concentration of BPA in samples extracted from rain coat with the recovery ranging from 85.70 to 103.23%.