Electrochemical Determination of Chloramphenicol on Glassy Carbon Electrode Modified Activated Carbon Derived from Rice Husks. (22nd November 2021)

• Record Type: Journal Article
• Authors: Thanh, Tran Si; Thanh Tu, Nguyen Thi; Quy, Phan Tu; Toan, Tran Thanh Tam; Thanh, Nguyen Mau; Nguyen, Vo Thang; Tuan, Nguyen Hoang; Nhiem, Dao Ngoc; Lieu, Pham Khac; Khieu, Dinh Quang
• Is Part Of: ECS journal of solid state science and technology. Volume 10:Number 11(2021)
• Publication Date: 2021-11-22
• Subjects: Chloramphenicol -- electrochemical determination -- activated carbon -- rice husks; Solid state chemistry -- Periodicals; Electronics -- Materials -- Periodicals; Electrochemistry -- Periodicals; 541.0421
• DOI: 10.1149/2162-8777/ac372c
• Languages: English
• ISSNs: 2162-8777

Abstract

Abstract : In the present article, the application of activated carbon derived from rice husks (RHAC) with high surface area as an electrode modifier for electrochemical determination of chloramphenicol (CP) is demonstrated. The RHAC was synthesized via a two-step alkaline pretreatment followed by the application of ultrasound radiation. The obtained carbon materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), nitrogen adsorption/desorption isotherms, Fourier transformation Infrared (FT-IR) spectroscopy and Raman spectroscopy. It was found that the ultrasonic activation process plays a critical role in improving the textural properties of AC by removing fine particles to clean capillaries and transforming a graphitic structure to a turbostratic one. The RHAC synthesized in suitable conditions displayed a specific surface area up to 1710 m 2 g −1 . The glassy carbon electrode modified with RHAC exhibited an excellent electroactivity towards CP as compared to bare GCE. The voltammetry characteristics of the electrochemical sensor were studied by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). This electrode had a good performance with a linear response range of 0.95–5.76 μ M and a low detection limit of 0.66 μ M (S/N = 3). The present promising sensor displayed high selectivity, great stability and expectable recovery for CP detection in real samples.