Methodological guidance to the batch preparation of graphene-based sensor for low-cost and high-performance Cd2+and Pb2+detection
文献类型： 外文期刊
作者： Ye, Wenshuai 1 ; Liu, Ning 2 ; Li, Sicheng 3 ; Zhao, Guo 4 ; Liu, Gang 1 ;
作者机构： 1.China Agr Univ, Key Lab Agr Informat Acquisit Technol, Minist Agr & Rural Affairs China, Beijing 100083, Peoples R China
2.Beijing Acad Agr & Forestry Sci, Res Ctr Intelligent Equipment, Beijing 100097, Peoples R China
3.China Agr Univ, Key Lab Smart Agr Syst, Minist Educ, Beijing 100083, Peoples R China
4.Nanjing Agr Univ, Coll Artificial Intelligence, Nanjing 210031, Peoples R China
关键词： Electrochemical sensor; Heavy metal detection; Laser-induced porous graphene; Laser photothermal effect; Response surface optimization
期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：11.3； 五年影响因子：12.4 ）
ISSN： 0304-3894
年卷期： 2025 年 493 卷
页码：
收录情况： SCI
摘要： The cost-effective, disposable, batch-prepared electrochemical sensors with high sensitivity and accurate detection are essential to the rapid on-site detection of heavy metals in soil and water. Here, we report a one-step laser additive manufacturing technique for the batch fabrication of electrochemical sensors. With the systematic optimization of multiple laser parameters (including laser power, engraving speed, and frequency), highly sensitive laser-induced porous graphene (LIPG) electrodes were fabricated to detect Cd2+ and Pb2+ efficiently. Followingly, with the modification of Nafion and bismuth-film, the obtained Bi/Nafion/LIPG electrode showed excellent repeatability, stability, selectivity, and outstanding detection limits of 0.25 mu g/L for Cd2+ and 0.41 mu g/L for Pb2+, respectively. As-prepared Bi/Nafion/LIPG electrode also works in actual soil and water samples, with an average recovery of 99.61 and 99.90 for Cd2+ and Pb2+. Furthermore, from the perspective of the laser photothermal effect, the important influence of laser parameters on the physical and chemical properties of LIPG was analyzed, confirming that the laser photothermal effect has a superimposed cumulative effect on the surface of the PI film. This study provides a new methodical guidance for the rapid and batch preparation of LIPG electrodes with the advantages of low-cost, disposable, high-sensitivity, and flexibility, which can promote the on-site electrochemical detection of heavy metals in soil and water.
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