Electrochemical Dopamine Detection using a Fe/Fe3O4@C Composite derived from a Metal‐Organic Framework. Issue 29 (3rd August 2022)

• Record Type: Journal Article
• Authors: Zhang, Jingrui; Wang, Xingwen; Meng, Wei; Han, Chao; Leng, Chunpeng
• Is Part Of: ChemistrySelect. Volume 7:Issue 29(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-08-03
• Subjects: MOFs -- derivatives -- electrochemical sensing -- dopamine -- sensors; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.202201534
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: In this paper, a novel composite of Fe/Fe3 O4 @C is synthesized by taking a Fe‐metal‐organic framework (Fe‐MOF) as precursor template. Different treating temperature (450, 550, 650 and 750 °C) were carried out to investigate the composite of calcined products. The Fe/Fe3 O4 @C‐650 modified glassy carbon electrode (Fe/Fe3 O4 @C‐650 GCE) shows good electrocatalytic activity towards dopamine (DA) oxidation. Three electrochemical measuring methods of cyclic voltammetry (CV), differential pulse voltammetry (DPV) and amperometry i‐t are adopted to investigate the sensing behaviors of Fe/Fe3 O4 @C‐650 /GCE. The results show that: the sensors based on CV and DPV technology exhibit excellent advantages in the aspect of sensitivity and linear range thanthose of the sensor based on amperometry i‐t technology. Meanwhile, the sensor based on CV method shows good selectivity for dopamine, and can resist the influence of various sugars, uric acid, ascorbic acid, as well as Na + and K + . The sensor also shows good stability and repeatability in the sensing process. In addition, the Fe/Fe3 O4 @C‐650 /GCE could be successfully applied in the DA detection in the human serum. Abstract : This paper reports the synthesis of Fe/Fe3 O4 @C by taking a Fe‐MOF as a precursor and its application in electrochemical dopamine detection. Three electrochemical measuring methods of cyclic voltammetry (CV), differential pulse voltammetry (DPV) and amperometry i‐t are adopted to investigate the sensing behaviors for dopamine. The sensors based on CV and DPV technology exhibit excellent advantages in the dopamine determination.