Microwave effect for synthesis of TiO2 particles by self-hydrolysis of TiOCl2

Miki Inada, Kai Kamada, Naoya Enomoto, Junichi Hojo

研究成果: ジャーナルへの寄稿記事

10 引用 (Scopus)

抄録

TiO2 nanoparticles were synthesized by self-hydrolysis of TiOCl2 using conventional and microwave heating methods. By XRD analysis, rutile and anatase phases were detected at the early stage of reaction. In conventional heating method, the XRD peaks of rutile became stronger with time and the roundish agglomerates surrounded by acicular particles were observed by SEM. The initial product was confirmed by TEM to consist of small acicular particles assigned to rutile and fine nanoparticles assigned to hydrous TiO2 sol having anatase-like structure. As the reaction time was longer, the amount of acicular particles increased. These results suggest that TiO2 sol formed at the early stage by hydrolysis of TiOCl2 and the crystal growth of rutile progressed by dissolution-reprecipitation of TiO2 sol. In order to synthesize TiO2 nanoparticles, microwave was applied to this system. The microwave irradiation shortened the period of the precipitation because microwave can quickly heat up the aqueous solution, but retarded the crystal growth of rutile, leading to size reduction of TiO2 particles identified a hydrous TiO2 phase.

元の言語英語
ページ(範囲)814-818
ページ数5
ジャーナルJournal of the Ceramic Society of Japan
114
発行部数1334
DOI
出版物ステータス出版済み - 1 1 2006

Fingerprint

Sols
rutile
hydrolysis
Hydrolysis
Microwaves
Nanoparticles
Crystal growth
microwaves
Titanium dioxide
synthesis
Polymethyl Methacrylate
Microwave heating
Microwave irradiation
anatase
nanoparticles
crystal growth
Particles (particulate matter)
Crystallization
Dissolution
heating

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

これを引用

Microwave effect for synthesis of TiO2 particles by self-hydrolysis of TiOCl2 . / Inada, Miki; Kamada, Kai; Enomoto, Naoya; Hojo, Junichi.

:: Journal of the Ceramic Society of Japan, 巻 114, 番号 1334, 01.01.2006, p. 814-818.

研究成果: ジャーナルへの寄稿記事

Inada, Miki ; Kamada, Kai ; Enomoto, Naoya ; Hojo, Junichi. / Microwave effect for synthesis of TiO2 particles by self-hydrolysis of TiOCl2 :: Journal of the Ceramic Society of Japan. 2006 ; 巻 114, 番号 1334. pp. 814-818.
@article{ddc6a407c607480a8341916395274c33,
title = "Microwave effect for synthesis of TiO2 particles by self-hydrolysis of TiOCl2",
abstract = "TiO2 nanoparticles were synthesized by self-hydrolysis of TiOCl2 using conventional and microwave heating methods. By XRD analysis, rutile and anatase phases were detected at the early stage of reaction. In conventional heating method, the XRD peaks of rutile became stronger with time and the roundish agglomerates surrounded by acicular particles were observed by SEM. The initial product was confirmed by TEM to consist of small acicular particles assigned to rutile and fine nanoparticles assigned to hydrous TiO2 sol having anatase-like structure. As the reaction time was longer, the amount of acicular particles increased. These results suggest that TiO2 sol formed at the early stage by hydrolysis of TiOCl2 and the crystal growth of rutile progressed by dissolution-reprecipitation of TiO2 sol. In order to synthesize TiO2 nanoparticles, microwave was applied to this system. The microwave irradiation shortened the period of the precipitation because microwave can quickly heat up the aqueous solution, but retarded the crystal growth of rutile, leading to size reduction of TiO2 particles identified a hydrous TiO2 phase.",
author = "Miki Inada and Kai Kamada and Naoya Enomoto and Junichi Hojo",
year = "2006",
month = "1",
day = "1",
doi = "10.2109/jcersj.114.814",
language = "English",
volume = "114",
pages = "814--818",
journal = "Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan",
issn = "1882-0743",
publisher = "Ceramic Society of Japan/Nippon Seramikkusu Kyokai",
number = "1334",

}

TY - JOUR

T1 - Microwave effect for synthesis of TiO2 particles by self-hydrolysis of TiOCl2

AU - Inada, Miki

AU - Kamada, Kai

AU - Enomoto, Naoya

AU - Hojo, Junichi

PY - 2006/1/1

Y1 - 2006/1/1

N2 - TiO2 nanoparticles were synthesized by self-hydrolysis of TiOCl2 using conventional and microwave heating methods. By XRD analysis, rutile and anatase phases were detected at the early stage of reaction. In conventional heating method, the XRD peaks of rutile became stronger with time and the roundish agglomerates surrounded by acicular particles were observed by SEM. The initial product was confirmed by TEM to consist of small acicular particles assigned to rutile and fine nanoparticles assigned to hydrous TiO2 sol having anatase-like structure. As the reaction time was longer, the amount of acicular particles increased. These results suggest that TiO2 sol formed at the early stage by hydrolysis of TiOCl2 and the crystal growth of rutile progressed by dissolution-reprecipitation of TiO2 sol. In order to synthesize TiO2 nanoparticles, microwave was applied to this system. The microwave irradiation shortened the period of the precipitation because microwave can quickly heat up the aqueous solution, but retarded the crystal growth of rutile, leading to size reduction of TiO2 particles identified a hydrous TiO2 phase.

AB - TiO2 nanoparticles were synthesized by self-hydrolysis of TiOCl2 using conventional and microwave heating methods. By XRD analysis, rutile and anatase phases were detected at the early stage of reaction. In conventional heating method, the XRD peaks of rutile became stronger with time and the roundish agglomerates surrounded by acicular particles were observed by SEM. The initial product was confirmed by TEM to consist of small acicular particles assigned to rutile and fine nanoparticles assigned to hydrous TiO2 sol having anatase-like structure. As the reaction time was longer, the amount of acicular particles increased. These results suggest that TiO2 sol formed at the early stage by hydrolysis of TiOCl2 and the crystal growth of rutile progressed by dissolution-reprecipitation of TiO2 sol. In order to synthesize TiO2 nanoparticles, microwave was applied to this system. The microwave irradiation shortened the period of the precipitation because microwave can quickly heat up the aqueous solution, but retarded the crystal growth of rutile, leading to size reduction of TiO2 particles identified a hydrous TiO2 phase.

UR - http://www.scopus.com/inward/record.url?scp=33749403486&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33749403486&partnerID=8YFLogxK

U2 - 10.2109/jcersj.114.814

DO - 10.2109/jcersj.114.814

M3 - Article

AN - SCOPUS:33749403486

VL - 114

SP - 814

EP - 818

JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan

JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan

SN - 1882-0743

IS - 1334

ER -