Converting metal-organic framework particles from hydrophilic to hydrophobic by an interfacial assembling route
Zhang, Fanyu; Sang, Xinxin; Tan, Xiuniang; Liu, Chengcheng; Zhang, Jianling; Luo, Tian; Liu, Lifei; Han, Buxing; Yang, Guanying; Binks, Bernard P.
Professor Bernard P Binks B.P.Binks@hull.ac.uk
Professor of Physical Chemistry
Here we propose to modify the hydrophilicity of metal-organic framework (MOF) particles by an interfacial assembling route, which is based on the surface-active nature of MOF particles. It was found that hydrophilic UiO-66-NH₂ particles can be converted to hydrophobic particles through an oil-water interfacial assembling route. The underlying mechanism for the conversion of UiO-66-NH₂ was investigated by X-ray photoelectron spectroscopy and FT-IR spectroscopy. It was revealed that the close assembly of UiO-66-NH₂ particles at the oil-water interface strengthens the coordination between organic ligands and metal ions, which results in a decrease in the proportion of hydrophilic groups on UiO-66-NH₂ particle surfaces. Hydrophobic UiO-66-NH₂ particles show improved adsorption capacity for dyes in organic solvents compared with pristine UiO-66-NH₂ particles. It is expected that the interfacial assembling route can be applied to the synthesis of different kinds of MOF materials with tunable hydrophilicity or hydrophobicity required for diverse applications.
|Journal Article Type||Article|
|Publication Date||Oct 31, 2017|
|Publisher||American Chemical Society|
|Peer Reviewed||Peer Reviewed|
|APA6 Citation||Zhang, F., Sang, X., Tan, X., Liu, C., Zhang, J., Luo, T., …Binks, B. P. (2017). Converting metal-organic framework particles from hydrophilic to hydrophobic by an interfacial assembling route. Langmuir : the ACS journal of surfaces and colloids, 33(43), 12427-12433. doi:10.1021/acs.langmuir.7b02365|
|Keywords||Emulsion, Interfacial assembling, Metal-organic framework, Hydrophilic, Hydrophobic|
|Additional Information||This is a description of an article published in Langmuir, 2017.|
This document is the Accepted Manuscript version of a Published Work that appeared in final form in Langmuir copyright © American Chemical Society after peer review and technical editing by the publisher.
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