Author:
Nguyen Van Vien,Hoang Nguyen Thu Hien,Nguyen Canh Minh Thang,Ngo Hoang Long,Nguyen Thanh Tung,Le Viet Hai,Nguyen Thai Hoang
Abstract
Abstract
In this study, gold nanoelectrodes were fabricated via electrical deposition of gold nanoparticles (NPs) onto FTO electrodes using cyclic voltammetry (CV) in 1 M H3PO4 solution at a scan rate of 100 mV.s−1 in the potential range of 0–1.4 V and −0.5–0.6 V. The fabricated FTO/AuNP electrodes were characterised by UV–vis, scanning electron microscope, energy-dispersive X-ray spectroscopy, as well as CV and linear sweep voltammetry; the presence of gold on the electrode surface and its electrochemical properties were confirmed towards hydroquinone. The electrodes with the best electrochemical properties were chosen for arsenic(III) determination. The fabricated FTO/AuNP electrodes in the potential range of 0–1.4 V exhibited the high sensitivity with limit of detection (LOD) of 3.04 ppb and limit of quantitation (LOQ) of 9.23 ppb, whereas the FTO/AuNP electrode fabricated in the potential range of −0.5 V–0.6 V displayed the enhancement sensitivity with LOD = 0.623 ppb and LOQ = 1.89 ppb.
Subject
Electrical and Electronic Engineering,Industrial and Manufacturing Engineering,General Materials Science
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献