Abstract
AbstractFlexible surface‐enhanced Raman spectroscopy (SERS) substrates have received more and more attention for their non‐invasive sample collection ability. However, majority of them have poor stability and reproducibility because noble metal is easily oxidized and led to lose SERS activity. Herein, SiO2‐TiO2‐Ag hybrids aerogel (STAHA) material is first applied as a flexible SERS substrate for explosives and dyes long‐term sensitive detection. The sensitive non‐invasive detection of 3‐nitro‐1, 2, 4‐triazol‐5‐one (NTO) residues can be achieved with a limit of 1 × 10−6 m by wiping sample collection method. Meanwhile, similar SERS sensitivity from long‐term (50 days) kept substrates is observed compared with fresh‐made substrates. This long‐term sensitivity is contributed to electronic transfer compensation from TiO2 aerogel. This proposed flexible STAHA enrich the type of SERS substrates, and their long‐term sensitivity can provide a prospective application for trace analyses of explosives and other hazardous residues in criminal forensic, military, and security check.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
