ZIF-67/g-C3N4-Modified Electrode for Simultaneous Voltammetric Determination of Uric Acid and Acetaminophen with Cetyltrimethylammonium Bromide as Discriminating Agent. (27th January 2020)

• Record Type: Journal Article
• Authors: Ngo, Huynh Truong; Hoa, Le Thi; Khanh, Nguyen Tan; Hoa, Tran Thi Bich; Toan, Tran Thanh Tam; Mau, Tran Xuan; Phong, Nguyen Hai; Thang, Ho Sy; Khieu, Dinh Quang
• Other Names: Pyatenko Alexander Academic Editor.
• Is Part Of: Journal of nanomaterials. Volume 2020(2020)
• Publication Date: 2020-01-27
• Subjects: Nanostructured materials -- Periodicals; Nanotechnology -- Periodicals; Nanomatériaux; Nanostructured materials; Nanotechnology; Nanostructures; Nanotechnology; Periodicals; Fulltext; Internet Resources; Periodicals; 620.115
• DOI: 10.1155/2020/7915878
• Languages: English
• ISSNs: 1687-4110

Abstract

Abstract : In the present paper, the ZIF-67/ g -C3 N4 composite was synthesized and utilized as a modifier for a glassy carbon electrode for the simultaneous voltammetric determination of uric acid (URA) and acetaminophen (ACE) with cetyltrimethylammonium bromide (CTAB) as a discriminating agent. The composite was characterized using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and nitrogen adsorption/desorption isotherms. The obtained ZIF-67/ g -C3 N4 composite exhibits good textural properties (specific surface area: 75 m 2 ·g −1 ) and is stable in water with a pH range of 3 to 10. The ZIF-67/ g -C3 N4 -modified electrode combined with CTAB as a discriminating agent possesses excellent catalytic electrochemistry towards URA and ACE with well-defined electrochemical responses. The electrochemical kinetics study is also addressed. The linear relation of the oxidation peak current of URA and ACE and the concentration ranging from 0.2 μ M to 6.5 μ M provide a detection limit of 0.052 μ M for URA and 0.053 μ M for ACE. The proposed method is well-suited to simultaneously analyze URA and ACE in human urine with comparable results with HPLC.