Ultrasensitive catechin electrochemical sensor based on uniform ordered mesoporous carbon hollow spheres (MCHSs) advanced carbon-based conductive materials. Issue 22 (25th October 2022)

• Record Type: Journal Article
• Authors: Zhang, Li; Li, Jiejun; Wang, Chenxi; Huang, Linzi; Huang, Minghui; Wang, Yuefan; Tang, Xi; Zhao, Pengcheng; Xie, Yixi; Fei, Junjie
• Is Part Of: Analyst. Volume 147:Issue 22(2022)
• Page Start: 5239
• Page End: 5247
• Publication Date: 2022-10-25
• Subjects: Chemistry, Analytic -- Periodicals; 543
• DOI: 10.1039/d2an01405j
• Languages: English
• ISSNs: 0003-2654

Abstract

Abstract : Fabrication of an electrochemical catechin sensor composed of mesoporous carbon hollow spheres (MCHSs) and its application in actual sample detection. The MCHSs were obtained using a simple one-pot method without a surfactant. Abstract : Catechin is one of the flavonoids with antioxidant activity and has attracted great interest. A rapid and accurate detection of catechin is of great significance. Herein, an ultrasensitive catechin electrochemical sensor based on uniform ordered mesoporous carbon hollow spheres (MCHSs) advanced carbon-based conductive material modified glass carbon electrode was constructed. The MCHSs were synthesized by pyrolysis using nitrogen protection and template removal methods, and they exhibited excellent electrochemical detection for catechin owing to their high conductivity and uniform and small spheres with a large specific surface area and hollow structure. Under optimal conditions for the detection of catechin, the MCHSs/GCE showed a wider linear range (10 –1400 nM) and lower detection limit (LOD, 2.82 nM, (S/N = 3)). Furthermore, the electrochemical reaction sites and redox mechanisms of catechin were revealed by electrochemical behavior and density flooding theory. Moreover, the sensor we constructed exhibited good accuracy and stability for the detection of catechin in actual sample detections.