Needle-tip effect promoted flexible electrochemical sensor for detecting chloride ions in food by in-situ deposited silver dendrimers  

作　　者：Huang Dai Huilin Hu Zhiyong Gong Jing Shu Jiahua Wang Xiaodan Liu Fuwei Pi Qiao Wang Shuo Duan Yingli Wang 

机构地区：[1]Key Laboratory for Deep Processing of Major Grain and Oil,Ministry of Education,Hubei Key Laboratory for Processing and Transformation of Agricultural Products,College of Food Science and Engineering,Wuhan Polytechnic University,Wuhan 430023,China [2]Key Laboratory of on Site Processing Equipment for Agricultural Products,Ministry of Agriculture and Rural Affairs,College of Biosystems Engineering and Food Science,Zhejiang University,Hangzhou 310058,China [3]Food Safety Research Center,Key Research Institute of Humanities and Social Sciences of Hubei Province,Wuhan 430023,China [4]College of Engineering,Huazhong Agricultural University,Wuhan 430070,China [5]School of Food Science,Jiangnan University,Wuxi 214122,China

出　　处：《Advanced Sensor and Energy Materials》2024年第4期18-28,共11页先进传感器与能源材料（英文）

基　　金：financially supported by Key Research and Development Program in Hubei Province(Grant No.2023BBB042);the Fundamental Research Funds for the Central Universities(Grant No.2662023GXQD001);Key Laboratory of on Site Processing Equipment for Agricultural Products,Ministry of Agriculture and Rural Affairs(Grant No.2016NYZD2202).

摘　　要：Salt plays a crucial role in food processing and consumption,and the rapid detection of chloride ions in food and feed has great significance for practical applications.In this work,Ag-based nanomaterials were deposited on the surface of a flexible integrated electrochemical sensor for the detection of Cl-in food.In order to enhance the detection performance,a unique needle-tip structure was formed by manipulating the electro-engraving process during the electrodeposition growth.Theoretical calculations and electrochemical investigations have demonstrated that the dendrimer’s rich tip structure significantly enhanced its electrochemical performance.A sensitive and flexible integrated electrochemical sensor was creatively developed for the detection of Cl-using needletip effect-promoted Ag micro dendrimers.The sensor achieved quantitative detection of Cl-over a dynamic range of 10.0μM–100.0 mM,with a low limit of detection of 0.148μM.The flexible electrochemical sensor proposed in this work exhibited good repeatability,selectivity and recoveries in real food samples.

关 键 词：Silver dendrimers like nanostructure Flexible integrated electrodes Chloride ions Electrochemical sensor Food quality 

分 类 号：TP2[自动化与计算机技术—检测技术与自动化装置]