Surface-enhanced infrared detection of benzene in air using a porous metal-organic-frameworks film
- Authors
- Kim, Raekyung; Jee, Seohyeon; Ryu, Unjin; Lee, Hyeon Shin; Kim, Se Yun; Choi, 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
- Pages
- 6
- 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
1975-7220
- 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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