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

收藏

页码：L479 / L481

页数：3

相关论文

共 12 条

[1] PHOTOCATALYTIC HYDROGENATION OF CH3CCH WITH H2O ON SMALL-PARTICLE TIO2 - SIZE QUANTIZATION EFFECTS AND REACTION INTERMEDIATES [J].

ANPO, M ;

SHIMA, T ;

KODAMA, S ;

KUBOKAWA, Y .

JOURNAL OF PHYSICAL CHEMISTRY, 1987, 91 (16) :4305-4310

[2] Non-equilibrium and equilibrium problems in laser-induced plasmas [J].

Capitelli, M ;

Capitelli, F ;

Eletskii, A .

SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, 2000, 55 (06) :559-574

[3] Optical emission spectroscopy and modeling of plasma produced by laser ablation of titanium oxides [J].

De Giacomo, A ;

Shakhatov, VA ;

De Pascale, O .

SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, 2001, 56 (06) :753-776

[4] Photocatalytic destruction of phenol and salicylic acid with aerosol-made and commercial titania powders [J].

Fotou, GP ;

Pratsinis, SE .

CHEMICAL ENGINEERING COMMUNICATIONS, 1996, 151 :251-269

[5] Studies of silver nanoparticles by laser ablation method [J].

Jeon, JS ;

Yeh, CS .

JOURNAL OF THE CHINESE CHEMICAL SOCIETY, 1998, 45 (06) :721-726

[6] Fabrication of nanometer-sized anatase particles by a pulsed laser ablation method [J].

Kawasaki, K ;

Despres, JF ;

Kamei, S ;

Ishikawa, M ;

Odawara, O .

JOURNAL OF MATERIALS CHEMISTRY, 1997, 7 (10) :2117-2120

[7] GROWTH OF RUTILE CRYSTALLITES DURING THE INITIAL-STAGE OF ANATASE-TO-RUTILE TRANSFORMATION IN PURE TITANIA AND IN TITANIA-ALUMINA NANOCOMPOSITES [J].

KUMAR, KNP .

SCRIPTA METALLURGICA ET MATERIALIA, 1995, 32 (06) :873-877

[8] Pressure dependence of the morphology and size of cobalt (II,III) oxide nanoparticles prepared by pulsed-laser ablation [J].

Li, Q ;

Sasaki, T ;

Koshizaki, N .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1999, 69 (01) :115-118

[9] Synthesis of ultra-fine TiO2 powder using thermal plasma [J].

Oh, SM ;

Gong, JG ;

Park, DW .

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 2001, 34 (02) :283-286

[10] Preparation of nanoparticles by excimer laser ablation of calcium iron complex oxide [J].

Sasaki, T ;

Terauchi, S ;

Koshizaki, N ;

Umehara, H .

AICHE JOURNAL, 1997, 43 (11) :2636-2640