Portable and ultrasensitive detection of traces of water in alcoholic solvents by a polypyrrole-modified screen-printed electrode

Fan，Zhimin1; Zhang，Kun1,2; Feng，Xiaonan1; Hu，Ya1; Chen，Zheqian1; Wang，Shangqing1; Liu，Jingfu3; Zhang，Bintian1

2024-10-01

10.1016/j.jelechem.2024.118556

Journal of Electroanalytical Chemistry   影响因子和分区

1572-6657

In industrial production, the water content in alcoholic solvents is crucial for determining the quality and yield of the final products, and excessive water can potentially lead to accidents. However, in-situ, rapid, and accurate detection of trace amounts of water in alcoholic solvents has been a persistent challenge. Herein, we report a screen-printed electrode (SPE) modified with electroactive polypyrrole (PPy@SPE), which enables rapid and ultrasensitive quantification of water content in four alcoholic solvents. The amine groups on PPy provide hydrogen bonding sites, which, in conjunction with the rough surface of the SPE, enhance the adsorption of alcohol molecules and decrease the electrochemical response of the PPy@SPE due to the hindrance of charge transfer. Under optimal conditions, the PPy@SPE can detect water levels as low as 0.02 %, 0.01 %, 0.01 %, and 0.01 %, in methanol, ethanol, n-propanol, and isopropanol, respectively, and can be reused for six cycles or more. Furthermore, the capability for in-situ detection of water in alcoholic solvents was demonstrated by integrating the PPy@SPE with a miniaturized potentiostat. With the advantages of being ultrasensitive, robust, low-cost, and facile detection, this sensor is potentially a valuable tool for on-site water content monitoring in chemical industries.

Hydrogen bonding interaction Polypyrrole Potable electrochemical sensor Screen-printed electrode Water content detection

SCI ; EI

英语

第一 ; 通讯

CHEMISTRY

2-s2.0-85200596968

Scopus

1.Shenzhen Key Laboratory of Precision Measurement and Early Warning Technology for Urban Environmental Health Risks,School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.School of Geography,Earth & Environmental Sciences,University of Birmingham,Birmingham,B15 2TT,United Kingdom
3.Institute of Environment and Health,Jianghan University,Wuhan,430056,China

Fan，Zhimin,Zhang，Kun,Feng，Xiaonan,et al. Portable and ultrasensitive detection of traces of water in alcoholic solvents by a polypyrrole-modified screen-printed electrode[J]. Journal of Electroanalytical Chemistry,2024,970.

Fan，Zhimin.,Zhang，Kun.,Feng，Xiaonan.,Hu，Ya.,Chen，Zheqian.,...&Zhang，Bintian.(2024).Portable and ultrasensitive detection of traces of water in alcoholic solvents by a polypyrrole-modified screen-printed electrode.Journal of Electroanalytical Chemistry,970.

Fan，Zhimin,et al."Portable and ultrasensitive detection of traces of water in alcoholic solvents by a polypyrrole-modified screen-printed electrode".Journal of Electroanalytical Chemistry 970(2024).