Electrochemical sensor for the facile detection of trace amounts of bisphenol A based on cyclodextrin-functionalized graphene/platinum nanoparticles. Issue 1 (2nd December 2016)

• Record Type: Journal Article
• Authors: Zou, Jinfeng; Liu, Zhiguang; Guo, Yujing; Dong, Chuan
• Is Part Of: Analytical methods. Volume 9:Issue 1(2017)
• Page Start: 134
• Page End: 140
• Publication Date: 2016-12-02
• Subjects: Chemistry, Analytic -- Periodicals; Analytical biochemistry -- Periodicals; Chemical laboratories -- Standards -- Periodicals; 543.1905
• DOI: 10.1039/c6ay02719a
• Languages: English
• ISSNs: 1759-9660

Abstract

Abstract : A sensitive electrochemical sensor for Bisphenol A is developed based on TM-β-CD-Gr/PtNPs. This method has wide linear range and low detection limit. Moreover, it is convenient and cost-effective. Abstract : Bisphenol A (BPA) is an important and widely used industrial chemical that is harmful to both the environment and human health. Graphene/platinum nanoparticles (Gr/PtNPs) functionalized with heptakis-(2, 3, 6-tri- O -methyl)-β-cyclodextrin (TM-β-CD) were successfully synthesized using a simple wet chemistry strategy. The new nanocomposite had both the excellent properties of the Gr/PtNPs (large surface area, high conductivity and excellent electrocatalytic activity) and the cyclodextrin (host–guest supramolecular recognition and enrichment capability). It had a remarkable synergistic effect on the electrochemical reaction of BPA and a highly sensitive electrochemical sensor was developed to detect BPA. The oxidation peak current of BPA was greatly enhanced at the TM-β-CD-Gr/PtNPs modified glassy carbon electrode (GCE) compared with the Gr/PtNPs/GCE and the TM-β-CD-Gr/GCE. Under the optimum condition, the peak current for BPA increased linearly with concentration in the range 5.0 × 10 −8 to 8.0 × 10 −5 mol L −1 . The detection limit was 1.5 × 10 −8 mol L −1 (S/N = 3). This sensor is cost-effective and convenient and shows great potential for the detection of trace amounts of phenol compounds in environmental pollutants.