Synthesis of Rod-like NiO-Co_(3)O_(4)Composites for Sensitive Electrochemical Detection of Hydrogen Peroxide  

作　　者：Jia-Min Wang Dan Shao Lu-Lu Jiang Hua-Xiang Li Ya-Jun Gao Sheng-Qi Rao Zhen-Quan Yang 

机构地区：[1]School of Food Science and Technology,Yangzhou University,Yangzhou,225127,China [2]Jiangsu Key Laboratory of Dairy Biotechnology and Safety Control,Yangzhou University,Yangzhou,225127,China

出　　处：《Journal of Analysis and Testing》2022年第4期411-418,共8页分析检测（英文）

基　　金：provided by Natural science fund for colleges and universities in Jiangsu Province (19KJB550002);State Key Laboratory of Analytical Chemistry for Life Science (SKLACLS2001),Nanjing University

摘　　要：Accurate and effective detection of hydrogen peroxide(H_(2)O_(2))is of great significance in physiological functions as well as industrial applications.In this paper,the rod-like NiO-Co_(3)O_(4)nanomaterials were synthesized by a simple hydrothermal method for electrochemical detection of H_(2)O_(2).The characterization results indicated that the nanomaterials possess high porosity and excellent conductivity,and displayed good electrocatalysis activity at the same time.Under alkaline conditions,the as-prepared nanomaterials can catalyze the reduction of H_(2)O_(2)and realize the electron transfer between H_(2)O_(2)and the electrode.The H_(2)O_(2)electrochemical sensor based on NiO-Co_(3)O_(4)nanomaterials exhibited a wide linear response(1-250 and 250-1200μmol/L),a low detection limit(0.1μmol/L)and a high sensitivity(5305.59μA/(mmol/L·cm^(2))(S/N=3)).In addition,the fabricated sensor showed high selectivity,good repeatability and high stability.The applications of the proposed sensor for H_(2)O_(2)detection in food samples were demonstrated and satisfactory results were obtained.

关 键 词：Hydrogen peroxide NiO-Co_(3)O_(4)nanomaterials ELECTROCATALYSIS Electrochemical sensor 

分 类 号：TS207.3[轻工技术与工程—食品科学] O657.1[轻工技术与工程—食品科学与工程] TB332[理学—分析化学]