School of Materials and Energy, Yunnan University, 650504 Kunming, People's Republic of China.
National Center for International Research on Photoelectric and Energy Materials, Yunnan University, 650091 Kunming, People's Republic of China.
Nanotechnology. 2021 Jul 14;32(40). doi: 10.1088/1361-6528/ac0fa2.
Due to the poor conductivity of Fe based, Cu based and Co based electrode materials commonly used in the electrochemical detection of glucose, and the uneven stirring and poor conductivity of the traditional preparation method based on glassy carbon electrode. In order to solve the above problems, in this work, CdInOwith high electrical conductivity was directly grown on three-dimensional (3D) Ni foam to prepare electrode materials for non-enzymatic glucose sensors. CdInOnanoparticles is prepared from cadmium acetate and indium nitrate hydrate in benzyl alcohol by non-aqueous sol-gel method. The electrocatalytic oxidation performances of CdInOelectrode material for non-enzymatic glucose are studied. The results show that the proposed CdInOelectrode material has good electrochemical properties and sensing performance for glucose detection. The electrochemical response of CdInOelectrode material to glucose is recorded that calibration plot for glucose concentrations ranging from 1.0M to 1.0 mM ( = 0.99), a limit detection of 0.08M, an excellent sensitivity of 3.2925 mA.mM.cm, a rapid response time of 1.58 s, a good selectivity and a good long-term stability. These demonstrate the significant potential of CdInOelectrode material based on 3D Ni foam as non-enzymatic glucose sensors, which makes it possible to use it as a practical glucose detector. This work could introduce a new concept of nanoparticles modified electrode material grown directly on 3D Ni foam, thus a simple and reliable electrochemical glucose sensor platform is realized. This study was completed in 2019 in the school of materials and energy, Yunnan University.
由于常用的电化学检测葡萄糖的铁基、铜基和钴基电极材料导电性差，以及基于玻碳电极的传统制备方法搅拌不均匀、导电性差。为了解决上述问题，本工作直接在三维（3D）泡沫镍上生长具有高导电性的 CdInO，制备非酶葡萄糖传感器用电极材料。CdInO 纳米粒子采用无水醇热法，由醋酸镉和硝酸铟水合物在苄醇中制备。研究了 CdInO 电极材料对非酶葡萄糖的电催化氧化性能。结果表明，所提出的 CdInO 电极材料对葡萄糖具有良好的电化学性能和传感性能。记录了 CdInO 电极材料对葡萄糖的电化学响应，校准曲线范围为 1.0M 至 1.0 mM（r = 0.99），检测限为 0.08M，灵敏度为 3.2925 mA.mM.cm，响应时间为 1.58 s，选择性好，长期稳定性好。这些表明基于 3D 泡沫镍的 CdInO 电极材料作为非酶葡萄糖传感器具有重要的应用潜力，使其有可能用作实用的葡萄糖检测器。这项工作为直接在 3D 泡沫镍上生长的纳米粒子修饰电极材料引入了新概念，从而实现了简单可靠的电化学葡萄糖传感器平台。本研究于 2019 年在云南大学材料与能源学院完成。
