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Front Bioeng Biotechnol

Title:		AuNPs@MIL-101 (Cr) as a SERS-Active Substrate for Sensitive Detection of VOCs
Author(s):		Xie D; Wang R; Fu J; Zhao Z; Li M;
Address:		"CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China. Guangxi Key Laboratory of Agro-Environment and Agro-Product Safety, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, China"
Journal Title:		Front Bioeng Biotechnol
Year:		2022
Volume:		20220620
Issue:
Page Number:		921693 -
DOI:		10.3389/fbioe.2022.921693
ISSN/ISBN:		2296-4185 (Print) 2296-4185 (Electronic) 2296-4185 (Linking)
Abstract:		"Surface-enhanced Raman scattering (SERS) is an important and powerful analytical technique in chemical and biochemical analyses. Metal-organic frameworks (MOFs) can effectively capture volatile organic compounds (VOCs) with high adsorption capacity and fast kinetics, and the local surface plasmon resonance characteristics of gold nanoparticles can quickly and effectively distinguish different VOCs by SERS. Combining both, we designed a novel SERS substrate based on embedding gold nanoparticles (AuNPs) within MIL-101(Cr) for the recognition of various VOCs in the gaseous phase. Occupying of AuNPs inside MIL-101(Cr) increased the micropore-specific surface area of AuNPs@MIL-101(Cr), which enabled AuNPs@MIL-101(Cr) to absorb more toluene molecules and consequently realized its high detection sensitivity. The detection limits for toluene, 4-ethylbenzaldehyde, and formaldehyde were down to 6, 5, and 75, ppm respectively. Moreover, this substrate could be used for detecting different VOCs simultaneously. Finally, we discussed the enhancement of AuNPs outside and inside MIL-101(Cr) on the Raman signal"
Keywords:		AuNPs@MIL-101(Cr) Gold nanoparticles (AuNPs) metal-organic framework (MOF) surface-enhanced Raman scattering (SERS) volatile organic compounds (VOCs);
Notes:		"PubMed-not-MEDLINEXie, Dan Wang, Ruimeng Fu, Jinghao Zhao, Zhongxing Li, Min eng Switzerland 2022/07/09 Front Bioeng Biotechnol. 2022 Jun 20; 10:921693. doi: 10.3389/fbioe.2022.921693. eCollection 2022"