Interfacial synthesis of hollow TiO2 microspheres in ionic liquids

Takuya Nakashima, Nobuo Kimizuka

Research output: Contribution to journalArticle

643 Citations (Scopus)

Abstract

An interfacial sol-gel synthesis of inorganic hollow microspheres in room-temperature ionic liquids is newly developed. When metal alkoxides such as titanium tetrabutoxide, Ti(OBu)4, are dissolved in anhydrous toluene and injected into 1-buthyl-3-methylimidazolium hexafluorophosphate ([C4mim]PF6) under vigorous stirring, hollow titania microspheres are formed. The present technique is widely applicable to the reactive metal alkoxides such as Zr(OBu)4, Hf(OBu)4, Nb(OBu)4, and InSn3(OR)x, giving a general route to the metal oxide microspheres. When gold nanoparicles and carboxylate-containing dyes such as fluorescein isothiocyanate (FITC) are dissolved in the toluene microdroplets, they are stably immobilized in the microsphere shells. Calcination of the titania gel microspheres gives anatase TiO2 microspheres. The present method provides the first example of inorganic hollow microspheres formed in ionic liquids, and the ability to modify microspheres with metal nanoparticles or functional organic molecules would be widely applied to the design of smart organic/inorganic hybrid materials.

Original languageEnglish
Pages (from-to)6386-6387
Number of pages2
JournalJournal of the American Chemical Society
Volume125
Issue number21
DOIs
Publication statusPublished - May 28 2003

Fingerprint

Ionic Liquids
Microspheres
Ionic liquids
Titanium
Metals
Toluene
Gels
Metal Nanoparticles
Synthetic Chemistry Techniques
Metal nanoparticles
Hybrid materials
Polymethyl Methacrylate
Fluorescein
Gold
Calcination
Titanium dioxide
Oxides
Sol-gels
Coloring Agents
Dyes

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

Cite this

Interfacial synthesis of hollow TiO2 microspheres in ionic liquids. / Nakashima, Takuya; Kimizuka, Nobuo.

In: Journal of the American Chemical Society, Vol. 125, No. 21, 28.05.2003, p. 6386-6387.

Research output: Contribution to journalArticle

@article{ae746cc8d59b42c9b93f05b149101938,
title = "Interfacial synthesis of hollow TiO2 microspheres in ionic liquids",
abstract = "An interfacial sol-gel synthesis of inorganic hollow microspheres in room-temperature ionic liquids is newly developed. When metal alkoxides such as titanium tetrabutoxide, Ti(OBu)4, are dissolved in anhydrous toluene and injected into 1-buthyl-3-methylimidazolium hexafluorophosphate ([C4mim]PF6) under vigorous stirring, hollow titania microspheres are formed. The present technique is widely applicable to the reactive metal alkoxides such as Zr(OBu)4, Hf(OBu)4, Nb(OBu)4, and InSn3(OR)x, giving a general route to the metal oxide microspheres. When gold nanoparicles and carboxylate-containing dyes such as fluorescein isothiocyanate (FITC) are dissolved in the toluene microdroplets, they are stably immobilized in the microsphere shells. Calcination of the titania gel microspheres gives anatase TiO2 microspheres. The present method provides the first example of inorganic hollow microspheres formed in ionic liquids, and the ability to modify microspheres with metal nanoparticles or functional organic molecules would be widely applied to the design of smart organic/inorganic hybrid materials.",
author = "Takuya Nakashima and Nobuo Kimizuka",
year = "2003",
month = "5",
day = "28",
doi = "10.1021/ja034954b",
language = "English",
volume = "125",
pages = "6386--6387",
journal = "Journal of the American Chemical Society",
issn = "0002-7863",
publisher = "American Chemical Society",
number = "21",

}

TY - JOUR

T1 - Interfacial synthesis of hollow TiO2 microspheres in ionic liquids

AU - Nakashima, Takuya

AU - Kimizuka, Nobuo

PY - 2003/5/28

Y1 - 2003/5/28

N2 - An interfacial sol-gel synthesis of inorganic hollow microspheres in room-temperature ionic liquids is newly developed. When metal alkoxides such as titanium tetrabutoxide, Ti(OBu)4, are dissolved in anhydrous toluene and injected into 1-buthyl-3-methylimidazolium hexafluorophosphate ([C4mim]PF6) under vigorous stirring, hollow titania microspheres are formed. The present technique is widely applicable to the reactive metal alkoxides such as Zr(OBu)4, Hf(OBu)4, Nb(OBu)4, and InSn3(OR)x, giving a general route to the metal oxide microspheres. When gold nanoparicles and carboxylate-containing dyes such as fluorescein isothiocyanate (FITC) are dissolved in the toluene microdroplets, they are stably immobilized in the microsphere shells. Calcination of the titania gel microspheres gives anatase TiO2 microspheres. The present method provides the first example of inorganic hollow microspheres formed in ionic liquids, and the ability to modify microspheres with metal nanoparticles or functional organic molecules would be widely applied to the design of smart organic/inorganic hybrid materials.

AB - An interfacial sol-gel synthesis of inorganic hollow microspheres in room-temperature ionic liquids is newly developed. When metal alkoxides such as titanium tetrabutoxide, Ti(OBu)4, are dissolved in anhydrous toluene and injected into 1-buthyl-3-methylimidazolium hexafluorophosphate ([C4mim]PF6) under vigorous stirring, hollow titania microspheres are formed. The present technique is widely applicable to the reactive metal alkoxides such as Zr(OBu)4, Hf(OBu)4, Nb(OBu)4, and InSn3(OR)x, giving a general route to the metal oxide microspheres. When gold nanoparicles and carboxylate-containing dyes such as fluorescein isothiocyanate (FITC) are dissolved in the toluene microdroplets, they are stably immobilized in the microsphere shells. Calcination of the titania gel microspheres gives anatase TiO2 microspheres. The present method provides the first example of inorganic hollow microspheres formed in ionic liquids, and the ability to modify microspheres with metal nanoparticles or functional organic molecules would be widely applied to the design of smart organic/inorganic hybrid materials.

UR - http://www.scopus.com/inward/record.url?scp=0038514116&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0038514116&partnerID=8YFLogxK

U2 - 10.1021/ja034954b

DO - 10.1021/ja034954b

M3 - Article

C2 - 12785776

AN - SCOPUS:0038514116

VL - 125

SP - 6386

EP - 6387

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

SN - 0002-7863

IS - 21

ER -