基于激光雕刻石墨烯电极的伏安法实验教学新方案

doi:10.3866/PKU.DXHX202308049

Abstract

Abstract:

Voltammetry is an important chapter and teaching difficulty in the course of Instrumental Analysis. However, the existing experiment teaching program has shortcomings in theoretical integration and application expansion. This paper introduces a cutting-edge research progress in material sciences, i.e., laser-scribed graphene technology, into voltammetry experiment teaching. The program enriches the experiment contents by introducing basic knowledge such as simulation of diffusion current theory and electrocatalytic phenomena, and extending applications such as vanillin detection in powdered milk. These new contents will help students to deeply understand the basic principles, research trends, and application value of the method. The comprehensive cost of the experiment is low, and the electrodes can be prepared in batches, thus making it suitable for experiment teaching.

Key words: Voltammetry, Experiment teaching, Laser-scribed graphene electrode

Zhenlin Zhou, Siyuan Chen, Yi Liu, Chengguo Hu, Faqiong Zhao. A New Program of Voltammetry Experiment Teaching Based on Laser-Scribed Graphene Electrode[J].University Chemistry, 2024, 39(2): 358-370.

Figures/Tables 20

References 10

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名称	化学式	纯度/规格	生产厂家
PI胶带	–	50 mm × 28 m	淘宝网3J旗舰店
β-D-葡萄糖	C₆H₁₂O₆	> 80.0%	梯希爱(上海)化成工业发展有限公司
葡萄糖氧化酶	–	100–250 U∙mg⁻¹	中国上海阿拉丁试剂有限公司
二茂铁甲酸	C₁₁H₁₀FeO₂	分析纯	国药集团化学试剂有限公司
香兰素	C₈H₈O₃	分析纯	国药集团化学试剂有限公司

名称	生产厂家
激光雕刻机(T1 Pro 15 W，405 nm)	上海雕途实业有限公司
CHI 660E电化学工作站	上海辰华仪器有限公司
三电极夹(PCB夹子，单排3P，中间间距2.0 mm)	淘宝网智能仪器店

实验内容	预计学时
3.1 LIG电极制备及性能	1.5
3.2扩散电流理论的验证(含原理讲解)	4.5
3.3 Randles-Sevcik方程的验证(含原理讲解)	4.5
3.4微电极实验(含原理讲解)	2 (可拓展至4.5，开展微电极与常规电极对照定量分析实验)
3.5电催化实验(含原理讲解)	2 (可拓展至4.5，开展葡萄糖的伏安或安培定量分析实验)
3.6阳极溶出伏安法(含原理讲解)	2 (可拓展至4.5，开展重金属离子的阳极溶出定量分析实验)
3.7奶粉中香兰素的伏安检测(含原理讲解)	2 (可拓展至4.5，开展奶粉中香兰素的定量分析实验)

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A New Program of Voltammetry Experiment Teaching Based on Laser-Scribed Graphene Electrode

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