石墨烯
纳米复合材料
材料科学
循环伏安法
介电谱
检出限
扫描电子显微镜
核化学
氧化物
纳米颗粒
透射电子显微镜
电化学气体传感器
电化学
化学工程
无机化学
电极
纳米技术
化学
色谱法
冶金
复合材料
工程类
物理化学
作者
Peihong Deng,Jinxia Feng,Jingyun Xiao,Yanping Wei,Jinsong Zuo,Junhua Li,Jianhua Ding,Quanguo He
出处
期刊:Journal of The Electrochemical Society
[The Electrochemical Society]
日期:2021-12-15
卷期号:168 (12): 126529-126529
被引量:3
标识
DOI:10.1149/1945-7111/ac4376
摘要
High levels of uric acid (UA) in the human body usually cause diabetes, hypertension and atherosclerosis, kidney diseases, and neurological diseases. Hence, it is important to develop sensitive methods for UA determination. In this paper, nanocomposite composed of ceria nanoparticles and reduced graphene was successfully modified on the surface of glassy carbon electrode (ceria NPs-rGO/GCE) by a simple electroreduction method. The morphology, structure and property of the ceria NPs-rGO/GCE was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). The electrocatalytic activity of the ceria NPs-rGO/GCE for uric acid (UA) oxidation was studied in detail. The results showed that the ceria NPs-rGO/GCE exhibited excellent selectivity and high sensitivity for UA detection. In 0.05 M H 2 SO 4 solution, a linear range of 0.02–20 μ M and a low detection limit of 8.0 nM of UA were obtained on the ceria NPs-rGO/GCE. This developed method was successfully applied for the detection of UA in human serum and urine samples, and its recoveries reached 95.8%-105.0%.
科研通智能强力驱动
Strongly Powered by AbleSci AI