Formation and reaction activity of CeO2 nanoparticles of cubic structure and various shaped CeO2-TiO2 composite nanostructures

Keizo Nakagawa, Yusuke Murata, Masahiro Kishida, Motonari Adachi, Masahiko Hiro, Kenzo Susa

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Mono-dispersed cubic CeO2 nanoparticles have been synthesized using a surfactant-assisted method with laurylamine hydrochloride and cerium alkoxide modified with acetylacetone in an aqueous solution system. The prepared cubic CeO2 nanoparticles had a highly crystallized structure at 353 K and formed rod-like structures by calcination at 673 K after freeze-drying the CeO2 gel. We discovered a clear potential to make 1D, 2D or 3D CeO2-materials with a well-controlled characteristic length and shape by assembling cubic-shaped CeO2 nanoparticle building blocks. CeO2-TiO2 composite nanostructures have also been synthesized by changing the mole ratio of cerium alkoxide/titanium alkoxides. By utilizing the redox characteristic of CeO2, CeO2 nanoparticles and CeO2-TiO2 composite nanostructures after calcination, showed reaction activity toward the oxidization of I- to I2, due to the Lewis acid sites available on the CeO2-TiO2 nanostructure. The activity of the CeO2-TiO2 composite nanostructure reached a maximum at CeBu/TIPT = 75/25, with a calcination temperature at 623 K.

Original languageEnglish
Pages (from-to)30-39
Number of pages10
JournalMaterials Chemistry and Physics
Volume104
Issue number1
DOIs
Publication statusPublished - Jul 15 2007

Fingerprint

Nanostructures
alkoxides
Calcination
roasting
Nanoparticles
Cerium
nanoparticles
composite materials
Composite materials
cerium
Lewis Acids
acetylacetone
freeze drying
hydrochlorides
assembling
Titanium
Surface-Active Agents
Drying
Surface active agents
rods

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Formation and reaction activity of CeO2 nanoparticles of cubic structure and various shaped CeO2-TiO2 composite nanostructures. / Nakagawa, Keizo; Murata, Yusuke; Kishida, Masahiro; Adachi, Motonari; Hiro, Masahiko; Susa, Kenzo.

In: Materials Chemistry and Physics, Vol. 104, No. 1, 15.07.2007, p. 30-39.

Research output: Contribution to journalArticle

Nakagawa, Keizo ; Murata, Yusuke ; Kishida, Masahiro ; Adachi, Motonari ; Hiro, Masahiko ; Susa, Kenzo. / Formation and reaction activity of CeO2 nanoparticles of cubic structure and various shaped CeO2-TiO2 composite nanostructures. In: Materials Chemistry and Physics. 2007 ; Vol. 104, No. 1. pp. 30-39.
@article{4f575e3371b24b02aea413b81d204616,
title = "Formation and reaction activity of CeO2 nanoparticles of cubic structure and various shaped CeO2-TiO2 composite nanostructures",
abstract = "Mono-dispersed cubic CeO2 nanoparticles have been synthesized using a surfactant-assisted method with laurylamine hydrochloride and cerium alkoxide modified with acetylacetone in an aqueous solution system. The prepared cubic CeO2 nanoparticles had a highly crystallized structure at 353 K and formed rod-like structures by calcination at 673 K after freeze-drying the CeO2 gel. We discovered a clear potential to make 1D, 2D or 3D CeO2-materials with a well-controlled characteristic length and shape by assembling cubic-shaped CeO2 nanoparticle building blocks. CeO2-TiO2 composite nanostructures have also been synthesized by changing the mole ratio of cerium alkoxide/titanium alkoxides. By utilizing the redox characteristic of CeO2, CeO2 nanoparticles and CeO2-TiO2 composite nanostructures after calcination, showed reaction activity toward the oxidization of I- to I2, due to the Lewis acid sites available on the CeO2-TiO2 nanostructure. The activity of the CeO2-TiO2 composite nanostructure reached a maximum at CeBu/TIPT = 75/25, with a calcination temperature at 623 K.",
author = "Keizo Nakagawa and Yusuke Murata and Masahiro Kishida and Motonari Adachi and Masahiko Hiro and Kenzo Susa",
year = "2007",
month = "7",
day = "15",
doi = "10.1016/j.matchemphys.2007.02.047",
language = "English",
volume = "104",
pages = "30--39",
journal = "Materials Chemistry and Physics",
issn = "0254-0584",
publisher = "Elsevier BV",
number = "1",

}

TY - JOUR

T1 - Formation and reaction activity of CeO2 nanoparticles of cubic structure and various shaped CeO2-TiO2 composite nanostructures

AU - Nakagawa, Keizo

AU - Murata, Yusuke

AU - Kishida, Masahiro

AU - Adachi, Motonari

AU - Hiro, Masahiko

AU - Susa, Kenzo

PY - 2007/7/15

Y1 - 2007/7/15

N2 - Mono-dispersed cubic CeO2 nanoparticles have been synthesized using a surfactant-assisted method with laurylamine hydrochloride and cerium alkoxide modified with acetylacetone in an aqueous solution system. The prepared cubic CeO2 nanoparticles had a highly crystallized structure at 353 K and formed rod-like structures by calcination at 673 K after freeze-drying the CeO2 gel. We discovered a clear potential to make 1D, 2D or 3D CeO2-materials with a well-controlled characteristic length and shape by assembling cubic-shaped CeO2 nanoparticle building blocks. CeO2-TiO2 composite nanostructures have also been synthesized by changing the mole ratio of cerium alkoxide/titanium alkoxides. By utilizing the redox characteristic of CeO2, CeO2 nanoparticles and CeO2-TiO2 composite nanostructures after calcination, showed reaction activity toward the oxidization of I- to I2, due to the Lewis acid sites available on the CeO2-TiO2 nanostructure. The activity of the CeO2-TiO2 composite nanostructure reached a maximum at CeBu/TIPT = 75/25, with a calcination temperature at 623 K.

AB - Mono-dispersed cubic CeO2 nanoparticles have been synthesized using a surfactant-assisted method with laurylamine hydrochloride and cerium alkoxide modified with acetylacetone in an aqueous solution system. The prepared cubic CeO2 nanoparticles had a highly crystallized structure at 353 K and formed rod-like structures by calcination at 673 K after freeze-drying the CeO2 gel. We discovered a clear potential to make 1D, 2D or 3D CeO2-materials with a well-controlled characteristic length and shape by assembling cubic-shaped CeO2 nanoparticle building blocks. CeO2-TiO2 composite nanostructures have also been synthesized by changing the mole ratio of cerium alkoxide/titanium alkoxides. By utilizing the redox characteristic of CeO2, CeO2 nanoparticles and CeO2-TiO2 composite nanostructures after calcination, showed reaction activity toward the oxidization of I- to I2, due to the Lewis acid sites available on the CeO2-TiO2 nanostructure. The activity of the CeO2-TiO2 composite nanostructure reached a maximum at CeBu/TIPT = 75/25, with a calcination temperature at 623 K.

UR - http://www.scopus.com/inward/record.url?scp=34249820766&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34249820766&partnerID=8YFLogxK

U2 - 10.1016/j.matchemphys.2007.02.047

DO - 10.1016/j.matchemphys.2007.02.047

M3 - Article

AN - SCOPUS:34249820766

VL - 104

SP - 30

EP - 39

JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

SN - 0254-0584

IS - 1

ER -