Jump to main content
Jump to site search
Publishing
Advanced

Issue 13, 2010
Previous Article Next Article

Immobilization and melting point depression of imidazolium ionic liquids on the surface of nano-SiOx particles

Yusheng Liu,ab  Guozhong Wu,*a  Haiying Fu,a  Zheng Jiang,a  Shimou Chena  and  Maolin Shaa 
Author affiliations

* Corresponding authors

a Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China
E-mail: wuguozhong@sinap.ac.cn
Fax: +8621 39194526

b Graduate University of the Chinese Academy of Sciences, Beijing, China

Abstract

Four kinds of imidazolium-based ionic liquids (ILs) were immobilized onto the surface of nano-SiOx particles (d∼ 20 nm) by grinding in an agate mortar to produce a series of weight ratios of ionic liquid to nanoparticles. The physicochemical properties of immobilized ILs were investigated by differential scanning calorimetry, powder X-ray diffraction and Raman spectroscopy. It was found that the melting points (Tm) of the immobilized ILs depressed significantly in comparison with the bulk ionic liquids. The Tm depressions are 10, 12, 13 and 41 °C for [EMIM][PF6], [PMIM][PF6], [PHMIM][BF4] and [EMIM][I], respectively, for a loading amount of 35 wt% ionic liquid. The Tm depression of [EMIM][PF6] was independent of the weight proportion of immobilized ionic liquid up to 50 wt%, indicating that nano-SiOx has a large capacity for immobilized ILs. The Tm depression of [EMIM][I] is particularly significant because the H-bonding interactions of iodine anions with surface silanol groups of nano-SiOx particles is much weaker than that of fluorine anions with silanol groups of other investigated ionic liquids.

Graphical abstract: Immobilization and melting point depression of imidazolium ionic liquids on the surface of nano-SiOx particles

Back to tab navigation
Download options Please wait...

Publication details

The article was received on 16 Nov 2009, accepted on 04 Feb 2010 and first published on 03 Mar 2010


Article type: Paper
DOI: 10.1039/B924042J
Citation: Dalton Trans., 2010,39, 3190-3194
  •   Request permissions

    Immobilization and melting point depression of imidazolium ionic liquids on the surface of nano-SiOx particles

    Y. Liu, G. Wu, H. Fu, Z. Jiang, S. Chen and M. Sha, Dalton Trans., 2010, 39, 3190
    DOI: 10.1039/B924042J

    If you are not the author of this article and you wish to reproduce material from it in a third party non-RSC publication you must formally request permission using RightsLink. Go to our Instructions for using RightsLink page for details.

    Authors contributing to RSC publications (journal articles, books or book chapters) do not need to formally request permission to reproduce material contained in this article provided that the correct acknowledgement is given with the reproduced material.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      Reproduced from Ref. XX with permission from the Centre National de la Recherche Scientifique (CNRS) and The Royal Society of Chemistry.
    • For reproduction of material from PCCP:
      Reproduced from Ref. XX with permission from the PCCP Owner Societies.
    • For reproduction of material from PPS:
      Reproduced from Ref. XX with permission from the European Society for Photobiology, the European Photochemistry Association, and The Royal Society of Chemistry.
    • For reproduction of material from all other RSC journals and books:
      Reproduced from Ref. XX with permission from The Royal Society of Chemistry.

    If the material has been adapted instead of reproduced from the original RSC publication "Reproduced from" can be substituted with "Adapted from".

    In all cases the Ref. XX is the XXth reference in the list of references.

    If you are the author of this article you do not need to formally request permission to reproduce figures, diagrams etc. contained in this article in third party publications or in a thesis or dissertation provided that the correct acknowledgement is given with the reproduced material.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Reproduced by permission of The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC
    • For reproduction of material from PCCP:
      [Original citation] - Reproduced by permission of the PCCP Owner Societies
    • For reproduction of material from PPS:
      [Original citation] - Reproduced by permission of The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC
    • For reproduction of material from all other RSC journals:
      [Original citation] - Reproduced by permission of The Royal Society of Chemistry

    If you are the author of this article you still need to obtain permission to reproduce the whole article in a third party publication with the exception of reproduction of the whole article in a thesis or dissertation.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements