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Rapid CO2-laser scribing fabrication of an electrochemical sensor for the direct detection of Pb2+ and Cd2+

文献类型： 外文期刊

作者： Chu, Guanglei 1 ; Zhang, Yanyan 2 ; Zhou, Zhongrui 2 ; Zeng, Weixuan 1 ; Chen, Dongfei 3 ; Yu, Siping 1 ; Wang, Jiemin 4 ; Guo, Yemin 2 ; Sung, Xia 2 ; Li, Ming 1 ;

作者机构： 1.Hunan Acad Agr Sci, Hunan Agr Equipment Res Inst, Changsha 410125, Peoples R China

2.Shandong Univ Technol, Sch Agr Engn & Food Sci, Zibo 255049, Peoples R China

3.Univ New South Wales, Sch Chem, Sydney, NSW 2052, Australia

4.Hunan Acad Agr Sci, Hunan Rice Res Inst, Changsha 410125, Peoples R China

5.Hunan Univ, Longping Branch, Coll Biol, Changsha 410125, Peoples R China

6.Natl Univ Singapore, Dept Mat Sci & Engn, 21 Lower Kent Ridge Rd, Singapore 119077, Singapore

关键词： laser-induced graphene; electrochemical sensor; rapid fabrication; heavy-metal ions

期刊名称：NANO RESEARCH （ 影响因子：9.9； 五年影响因子：9.2 ）

ISSN： 1998-0124

年卷期： 2023 年 16 卷 5 期

页码：

收录情况： SCI

摘要： Laser-induced graphene (LIG) is a highly promising preparation material for electrochemical sensors; however, its preparation speed and nanomaterial modification steps significantly limit its mass production. Herein, this study proposed a new laser printing strategy that considerably improved the preparation speed of LIG with excellent electrochemical performance. Using the optimal parameters (laser power of 1%, scribing spacing of 0.12 mm, and scribing speed of 100 mm.s(-1)), it took only 14.2 s to complete the preparation of the detection electrode. Thus, we successfully detected Cd2+ and Pb2+ without any toxic reagents or electrode modification steps. The limits of detection of the sensor were 0.914 and 0.916 mu g.L-1 for Cd2+ and Pb2+, respectively, which are significantly lower than the required values for drinking-water quality, according to the World Health Organization guidelines. This study provides a novel approach for the rapid detection of heavy-metal ions.

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