Investigation of confined ionic liquid in nanostructured materials by a combination of SANS, contrast-matching SANS, and nitrogen adsorption

Konstantinos L. Stefanopoulos; George E. Romanos; Olga C. Vangeli; Konstantina Mergia; Nick K. Kanellopoulos; Alexandros Koutsioubas; Didier Lairez

doi:10.1021/la201261r

Investigation of confined ionic liquid in nanostructured materials by a combination of SANS, contrast-matching SANS, and nitrogen adsorption

Konstantinos L. Stefanopoulos
, George E. Romanos
, Olga C. Vangeli
, Konstantina Mergia
, Nick K. Kanellopoulos
, Alexandros Koutsioubas
, Didier Lairez

Research output: Contribution to journal › Article › peer-review

Abstract

Small-angle neutron scattering (SANS), contrast-matching SANS, and nitrogen adsorption have been utilized to investigate the confined ionic liquid (IL) [bmim][PF₆] phase in ordered mesoporous silica MCM-41 and SBA-15. The results suggest that the pores of SBA-15 are completely filled with IL whereas a small fraction of the pore volume, the pore "core", of MCM-41 is empty. The contrast-matching SANS measurements confirm the enhanced solubility of water in IL. In addition, they provide strong evidence that water does not enter the empty pore core of MCM-41, possibly because of the preferred orientation of the IL molecules in the adsorbed layer.

Original language	English
Pages (from-to)	7980-7985
Number of pages	6
Journal	Langmuir
Volume	27
Issue number	13
DOIs	https://doi.org/10.1021/la201261r
Publication status	Published - 5 Jul 2011
Externally published	Yes

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title = "Investigation of confined ionic liquid in nanostructured materials by a combination of SANS, contrast-matching SANS, and nitrogen adsorption",

abstract = "Small-angle neutron scattering (SANS), contrast-matching SANS, and nitrogen adsorption have been utilized to investigate the confined ionic liquid (IL) [bmim][PF6] phase in ordered mesoporous silica MCM-41 and SBA-15. The results suggest that the pores of SBA-15 are completely filled with IL whereas a small fraction of the pore volume, the pore {"}core{"}, of MCM-41 is empty. The contrast-matching SANS measurements confirm the enhanced solubility of water in IL. In addition, they provide strong evidence that water does not enter the empty pore core of MCM-41, possibly because of the preferred orientation of the IL molecules in the adsorbed layer.",

author = "Stefanopoulos, \{Konstantinos L.\} and Romanos, \{George E.\} and Vangeli, \{Olga C.\} and Konstantina Mergia and Kanellopoulos, \{Nick K.\} and Alexandros Koutsioubas and Didier Lairez",

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doi = "10.1021/la201261r",

language = "English",

volume = "27",

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journal = "Langmuir",

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T1 - Investigation of confined ionic liquid in nanostructured materials by a combination of SANS, contrast-matching SANS, and nitrogen adsorption

AU - Stefanopoulos, Konstantinos L.

AU - Romanos, George E.

AU - Vangeli, Olga C.

AU - Mergia, Konstantina

AU - Kanellopoulos, Nick K.

AU - Koutsioubas, Alexandros

AU - Lairez, Didier

PY - 2011/7/5

Y1 - 2011/7/5

N2 - Small-angle neutron scattering (SANS), contrast-matching SANS, and nitrogen adsorption have been utilized to investigate the confined ionic liquid (IL) [bmim][PF6] phase in ordered mesoporous silica MCM-41 and SBA-15. The results suggest that the pores of SBA-15 are completely filled with IL whereas a small fraction of the pore volume, the pore "core", of MCM-41 is empty. The contrast-matching SANS measurements confirm the enhanced solubility of water in IL. In addition, they provide strong evidence that water does not enter the empty pore core of MCM-41, possibly because of the preferred orientation of the IL molecules in the adsorbed layer.

AB - Small-angle neutron scattering (SANS), contrast-matching SANS, and nitrogen adsorption have been utilized to investigate the confined ionic liquid (IL) [bmim][PF6] phase in ordered mesoporous silica MCM-41 and SBA-15. The results suggest that the pores of SBA-15 are completely filled with IL whereas a small fraction of the pore volume, the pore "core", of MCM-41 is empty. The contrast-matching SANS measurements confirm the enhanced solubility of water in IL. In addition, they provide strong evidence that water does not enter the empty pore core of MCM-41, possibly because of the preferred orientation of the IL molecules in the adsorbed layer.

UR - https://www.scopus.com/pages/publications/79959797241

U2 - 10.1021/la201261r

DO - 10.1021/la201261r

M3 - Article

AN - SCOPUS:79959797241

SN - 0743-7463

VL - 27

SP - 7980

EP - 7985

JO - Langmuir

JF - Langmuir

IS - 13

ER -

Investigation of confined ionic liquid in nanostructured materials by a combination of SANS, contrast-matching SANS, and nitrogen adsorption

Abstract

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