Preparation of TiO2 nanoparticles by pulsed laser ablation:: Ambient pressure dependence of crystallization

被引：24

作者：

Matsubara, M

Yamaki, T

Itoh, H

Abe, H

Asai, K

机构：

[1] Univ Tokyo, Grad Sch Engn, Dept Quantum Engn & Syst Sci, Bunkyo Ku, Tokyo 1138656, Japan

[2] Japan Atom Energy Res Inst, Takasaki Radiat Chem Res Estab, Dept Mat Dev, Takasaki, Gumma 3701292, Japan

[3] Univ Tokyo, Nucl Engn Res Lab, Grad Sch Engn, Tokai, Ibaraki 3191188, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 2003年 / 42卷 / 5A期

关键词：

titanium dioxide (TiO2); nanoparticles; pulsed laser ablation; crystallization; nanoparticle deposition;

D O I：

10.1143/JJAP.42.L479

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Pulsed laser ablation (PLA) with a KrF excimer laser was used to prepare fine particles of titanium dioxide (TiO2). The ablation in an atmosphere of Ar and O-2 (5:5) at total pressures of greater than or equal to1Torr led to the formation of TiO2 nanoparticles composed of anatase and rutile structures without any suboxides. The weight fraction of the rutile/anatase crystalline phases was dependent on the pressure of the Ar/O-2 gas. The TiO2 nanoparticles had a spherical shape and their size, ranging from 10 and 14 nm, also appeared to be dependent on the ambient pressure.

引用

页码：L479 / L481

页数：3

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