Compression of ionic liquid when confined in porous silica nanoparticles

Cheng Li; Xiaojing Guo; Yaxing He; Zheng Jiang; Yaxing Wang; Shimou Chen; Haiying Fu; Yang Zou; Sheng Dai; Guozhong Wu; Hongjie Xu

doi:10.1039/C3RA40245B

Compression of ionic liquid when confined in porous silica nanoparticles†

Cheng Li,^a Xiaojing Guo,^a Yaxing He,^a Zheng Jiang,^a Yaxing Wang,^a Shimou Chen,^b Haiying Fu,^a Yang Zou,^a Sheng Dai,^c Guozhong Wu*^a and Hongjie Xu^a

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* Corresponding authors

^a Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China
E-mail: wuguozhong@sinap.ac.cn

^b Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China

^c Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA

Abstract

[Emim]Br ionic liquid was confined in porous SiO₂ nanoparticles. It is shown that the confinement in the nanopores leads to a compression of molecular size and an increase in the melting point. The pore size of SiO₂ is a key factor in tuning the anion-cation distance and the melting point of the confined ionic liquids.

RSC Advances

Compression of ionic liquid when confined in porous silica nanoparticles†

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Compression of ionic liquid when confined in porous silica nanoparticles

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