@article{Chu2023, 
author = {Guanglei Chu and Yanyan Zhang and Zhongrui Zhou and Weixuan Zeng and Dongfei Chen and Siping Yu and Jiemin Wang and Yemin Guo and Xia Sun and Ming Li},
title = {Rapid CO2-laser scribing fabrication of an electrochemical sensor for the direct detection of Pb2+ and Cd2+},
year = {2023},
journal = {Nano Research},
volume = {16},
number = {5},
pages = {7671-7681},
keywords = {electrochemical sensor, laser-induced graphene, rapid fabrication, heavy-metal ions},
url = {https://www.sciopen.com/article/10.1007/s12274-023-5471-y},
doi = {10.1007/s12274-023-5471-y},
abstract = {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 μg·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.}
}