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Title: Driving CO2 to a quasi-condensed phase at the interface between a nanoparticle surface and a metal–organic framework at 1 bar and 298 K
Authors: Lee, Hiang Kwee
Lee, Yih Hong
Morabito, Joseph V.
Liu, Yejing
Koh, Charlynn Sher Lin
Phang, In Yee
Pedireddy, Srikanth
Han, Xuemei
Chou, Lien-Yang
Tsung, Chia-Kuang
Ling, Xing Yi
Keywords: Science::Physics
Issue Date: 2017
Source: Lee, H. K., Lee, Y. H., Morabito, J. V., Liu, Y., Koh, C. S. L., Phang, I. Y., ... Ling, X. Y. (2017). Driving CO2 to a quasi-condensed phase at the interface between a nanoparticle surface and a metal–organic framework at 1 bar and 298 K. Journal of the American Chemical Society, 139(33), 11513-11518. doi:10.1021/jacs.7b04936
Journal: Journal of the American Chemical Society
Abstract: We demonstrate a molecular-level observation of driving CO2 molecules into a quasi-condensed phase on the solid surface of metal nanoparticles (NP) under ambient conditions of 1 bar and 298 K. This is achieved via a CO2 accumulation in the interface between a metal–organic framework (MOF) and a metal NP surface formed by coating NPs with a MOF. Using real-time surface-enhanced Raman scattering spectroscopy, a >18-fold enhancement of surface coverage of CO2 is observed at the interface. The high surface concentration leads CO2 molecules to be in close proximity with the probe molecules on the metal surface (4-methylbenzenethiol), and transforms CO2 molecules into a bent conformation without the formation of chemical bonds. Such linear-to-bent transition of CO2 is unprecedented at ambient conditions in the absence of chemical bond formation, and is commonly observed only in pressurized systems (>105 bar). The molecular-level observation of a quasi-condensed phase induced by MOF coating could impact the future design of hybrid materials in diverse applications, including catalytic CO2 conversion and ambient solid–gas operation.
ISSN: 0002-7863
DOI: 10.1021/jacs.7b04936
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of the American Chemical Society, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles


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