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Title: Ionic liquid-assisted sonochemical preparation of CeO 2 nanoparticles for CO oxidation

Abstract

CeO 2 nanoparticles were synthesized via a one-step ultrasound synthesis in different kinds of ionic liquids based on bis(trifluoromethanesulfonylamide, [Tf 2N] , in combination with various cations including 1-butyl-3-methylimidazolium ([C 4mim] +), 1-ethyl-2,3-dimethylimidazolium ([Edimim] +), butyl-pyridinium([Py 4] +), 1-butyl-1-methyl-pyrrolidinium ([Pyrr 14] +), and 2-hydroxyethyl-trimethylammonium ([N 1112OH] +). Depending on synthetic parameters, such as ionic liquid, Ce(IV) precursor, heating method, and precipitator, formed ceria exhibits different morphologies, varying from nanospheres, nanorods, nanoribbons, and nanoflowers. The morphology, crystallinity, and chemical composition of the obtained materials were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), energy dispersive X-ray spectroscopy (EDX), Raman spectroscopy, and N2 adsorption. The structural and electronic properties of the as-prepared CeO 2 samples were probed by CO adsorption using IR spectroscopy under ultrahigh vacuum conditions. The catalytic activities of CeO 2 nanoparticles were investigated in the oxidation of CO. CeO 2 nanospheres obtained sonochemically in [C 4mim][Tf 2N] exhibit the best performance for low-temperature CO oxidation. As a result, the superior catalytic performance of this material can be related to its mesoporous structure, small particle size, large surface area, and high number of surface oxygen vacancy sites.

Authors:
 [1];  [2];  [1];  [1];  [3]
  1. Ruhr-Univ. Bochum, Bochum (Germany)
  2. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  3. Ruhr-Univ. Bochum, Bochum (Germany); Iowa State Univ., Ames, IA (United States); Ames Lab., Ames, IA (United States)
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1367359
Alternate Identifier(s):
OSTI ID: 1239140
Report Number(s):
IS-J-8580
Journal ID: ISSN 2168-0485; PII: S138718111400612X
Grant/Contract Number:  
AC02-07CH11358
Resource Type:
Published Article
Journal Name:
ACS Sustainable Chemistry & Engineering
Additional Journal Information:
Journal Volume: 3; Journal Issue: 1; Journal ID: ISSN 2168-0485
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; catalysis; ceria; CO oxidation; ionic liquids; nanomaterials

Citation Formats

Alammar, Tarek, Noei, Heshmat, Wang, Yuemin, Grünert, Wolfgang, and Mudring, Anja -Verena. Ionic liquid-assisted sonochemical preparation of CeO2 nanoparticles for CO oxidation. United States: N. p., 2014. Web. doi:10.1021/sc500387k.
Alammar, Tarek, Noei, Heshmat, Wang, Yuemin, Grünert, Wolfgang, & Mudring, Anja -Verena. Ionic liquid-assisted sonochemical preparation of CeO2 nanoparticles for CO oxidation. United States. doi:10.1021/sc500387k.
Alammar, Tarek, Noei, Heshmat, Wang, Yuemin, Grünert, Wolfgang, and Mudring, Anja -Verena. Fri . "Ionic liquid-assisted sonochemical preparation of CeO2 nanoparticles for CO oxidation". United States. doi:10.1021/sc500387k.
@article{osti_1367359,
title = {Ionic liquid-assisted sonochemical preparation of CeO2 nanoparticles for CO oxidation},
author = {Alammar, Tarek and Noei, Heshmat and Wang, Yuemin and Grünert, Wolfgang and Mudring, Anja -Verena},
abstractNote = {CeO2 nanoparticles were synthesized via a one-step ultrasound synthesis in different kinds of ionic liquids based on bis(trifluoromethanesulfonylamide, [Tf2N]–, in combination with various cations including 1-butyl-3-methylimidazolium ([C4mim]+), 1-ethyl-2,3-dimethylimidazolium ([Edimim]+), butyl-pyridinium([Py4]+), 1-butyl-1-methyl-pyrrolidinium ([Pyrr14]+), and 2-hydroxyethyl-trimethylammonium ([N1112OH]+). Depending on synthetic parameters, such as ionic liquid, Ce(IV) precursor, heating method, and precipitator, formed ceria exhibits different morphologies, varying from nanospheres, nanorods, nanoribbons, and nanoflowers. The morphology, crystallinity, and chemical composition of the obtained materials were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), energy dispersive X-ray spectroscopy (EDX), Raman spectroscopy, and N2 adsorption. The structural and electronic properties of the as-prepared CeO2 samples were probed by CO adsorption using IR spectroscopy under ultrahigh vacuum conditions. The catalytic activities of CeO2 nanoparticles were investigated in the oxidation of CO. CeO2 nanospheres obtained sonochemically in [C4mim][Tf2N] exhibit the best performance for low-temperature CO oxidation. As a result, the superior catalytic performance of this material can be related to its mesoporous structure, small particle size, large surface area, and high number of surface oxygen vacancy sites.},
doi = {10.1021/sc500387k},
journal = {ACS Sustainable Chemistry & Engineering},
number = 1,
volume = 3,
place = {United States},
year = {2014},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1021/sc500387k

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Cited by: 15 works
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