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Surface-enhanced infrared detection of benzene in air using a porous metal-organic-frameworks film

Authors
Kim, RaekyungJee, SeohyeonRyu, UnjinLee, Hyeon ShinKim, Se YunChoi, Kyung Min
Issue Date
Jun-2019
Publisher
KOREAN INSTITUTE CHEMICAL ENGINEERS
Keywords
Metal-organic Frameworks; Porous Film; Surface-enhanced IR Spectroscopy; Volatile Organic Compounds; Plasmon Resonance
Citation
KOREAN JOURNAL OF CHEMICAL ENGINEERING, v.36, no.6, pp.975 - 980
Journal Title
KOREAN JOURNAL OF CHEMICAL ENGINEERING
Volume
36
Number
6
Start Page
975
End Page
980
URI
https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/3012
DOI
10.1007/s11814-018-0231-0
ISSN
0256-1115
Abstract
Infrared (IR) spectroscopy is a powerful technique for observing organic molecules, as it combines sensitive vibrational excitations with a non-destructive probe. However, gaseous volatile compounds in the air are challenging to detect, as they are not easy to immobilize in a sensing device and give enough signal by themselves. In this study, we fabricated a thin nanocrystalline metal-organic framework (nMOF) film on a surface plasmon resonance (SPR) substrate to enhance the IR vibration signal of the gaseous volatile compounds captured within the nMOF pores. Specifically, we synthesized nanocrystalline HKUST-1 (nHKUST-1) particles of ca. 80 nm diameter and used a colloidal dispersion of these particles to fabricate nHKUST-1 films by a spin-coating process. After finding that benzene was readily adsorbed onto nHKUST-1, an nHKUST-1 film deposited on a plasmonic Au substrate was successfully applied to the IR detection of gaseous benzene in air using surface-enhanced IR spectroscopy.
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공과대학 (화공생명공학부)
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