Enhanced stability of electrochemical performance of few-layer black phosphorus electrodes by noncovalent adsorption of 1, 4-diamine-9, 10-anthraquinone. (1st June 2022)

• Record Type: Journal Article
• Authors: Jakóbczyk, Paweł; Dettlaff, Anna; Skowierzak, Grzegorz; Ossowski, Tadeusz; Ryl, Jacek; Bogdanowicz, Robert
• Is Part Of: Electrochimica acta. Volume 416(2022)
• Publication Date: 2022-06-01
• Subjects: Few-layer black phosphorus -- 1, 4-diamine-9, 10-anthraquinone -- Noncovalent functionalisation -- Electrochemical properties -- Electrochemical sensor; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2022.140290
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: In this paper, the novel noncovalent functionalisation strategy of few-layer black phosphorus by 1, 4-diamine-9, 10-anthraquinone electrode was proposed and studied. The degradation of few-layer black phosphorus under exposure to oxygen and water is a significant obstacle to its use as an electroanalytical electrode. The anthraquinone compound adsorbed at black phosphorus flakes results in improved prevention of the phosphorus surface against degradation and electrode decomposition. Furthermore, a large concentration of amino group present in 1, 4-diamine-9, 10-anthraquinone enhances the electrochemical performance of electrode revealed by a faster rate of heterogeneous electron transfer observed in cyclic voltammetry studies. The designed electrode exhibits stable redox peaks over 100 cycles with separation between the peaks of 79 ± 2 mV and the formal redox potential reaching 257 ± 3 mV. The differential pulse voltammetry was utilised for the detection of ascorbic acid, revealing a limit of detection equal to 3.29 ppm (18.68 µM) and a limit of quantification of 9.98 ppm (56.66 µM). The linear range of 1–20 ppm was achieved, allowing for the detection of ascorbic acid in real conditions. Thus, anthraquinone-modified few-layer black phosphorus may be an attractive novel electrode material for sensitive electroanalytical applications.