Quantitative SERS sensing mediated by internal standard Raman signal from silica nanoparticles in flexible polymer matrix

Autor:	Jinqi Fan, Xinyu Fang, Yongling Zhang, Lanxin Xu, Ziqi Zhao, Chenjie Gu, Xingfei Zhou, Dong Chen, Tao Jiang
Rok vydání:	2022
Předmět:	Polymers Metal Nanoparticles Nanoparticles Thiram Silicon Dioxide Spectrum Analysis Raman Instrumentation Spectroscopy Atomic and Molecular Physics and Optics Analytical Chemistry
Zdroj:	Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy. 278
ISSN:	1873-3557
Popis:	Attributed to poor signal uniformity and external interference, ultrasensitive surface-enhanced Raman spectroscopy (SERS) still faces difficulties in the reliable and quantitative detection of trace molecules. Here, a facile Ag/Si/sodium carboxy methyl cellulose (NaCMC) film with internal standard (IS) was promoted for quantitative determination of thiram. The effects of preparation conditions on SERS activity of the film were systematically investigated and then a flexible SERS substrate with high sensitivity and uniformity was fabricated. The enhancement factor was calculated to be 1.12 × 10
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef78b5ab4511ea57a6585a3c3ad84bc2 https://pubmed.ncbi.nlm.nih.gov/35526441 Zobrazit plný text záznamu Full Text from ScienceDirect