期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 414, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2021.125160
关键词
SERS; Flexible substrate; Spiral scanning; Raman; Nanocellulose
资金
- National Research Foundation of Korea (NRF) - Korean government (MSIP) [2017M3A7B4041987, 2020R1C1C1004459, 2018R1D1A1B07047874, 2016R1A5A1012966, 2020R1A2C2010170]
- National Research Foundation of Korea [2020R1A2C2010170, 2020R1C1C1004459] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
A rapid measurement system using a flexible nanocellulose-based SERS substrate and a spiral scanning system has been developed for assessing harmful chemicals, with successful testing of the toxic fungicide thiram. The system has potential for fast and quantitative Raman spectroscopic analysis, offering a powerful tool for toxic materials detection.
Surface-enhanced Raman scattering (SERS) has proven to be a valuable tool for assessing harmful chemicals in various substances, including water, soil, and foods. However, a fast measurement system is required for multiplexed detection to extend the range of its applications. The rotating scanning stage of the SERS substrate is considered to be a promising approach to achieving a fast measurement system. This paper reports a facile measurement system by using a flexible nanocellulose-based SERS substrate and a spiral scanning system, which rotates the cylinder sample holder and moves the stage. A flexible nanocellulose-based SERS substrate deposited with Au nanoparticles is suitable for the spiral scanning system, which requires SERS substrates to be highly flexible and durable. The well-known toxic fungicide, thiram, was tested by this system. The results revealed that the nanocellulose-based SERS substrate is well-fitted with a spiral scanning system and that the signal data from a large area substrate can be obtained within 30 s. It is noteworthy that the error of spiral scanning measurements is smaller than that of multi-spot sampling. This work provides a powerful tool for Raman spectroscopic analysis, which requires quantitative and fast testing. Furthermore, various flexible SERS substrates can be utilized in this system for toxic materials detection.
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