Hot-wire chemical vapor deposition of crystalline tungsten oxide nanoparticles at high density

被引：66

作者：

Mahan, AH ^{[1
]}

Parilla, PA ^{[1
]}

Jones, KM ^{[1
]}

Dillon, AC ^{[1
]}

机构：

[1] Natl Renewable Energy Lab, Golden, CO 80401 USA

来源：

CHEMICAL PHYSICS LETTERS | 2005年 / 413卷 / 1-3期

关键词：

D O I：

10.1016/j.cplett.2005.07.037

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Tungsten oxide nanostructured rods, particles and occasionally tubes are deposited by heating a tungsten filament in a partial oxygen atmosphere. Transmission electron microscopy (TEM) reveals the nanorods have similar to 10-50 nm diameters and similar to 50-200 nm lengths. The nanoparticle size ranges from similar to 10 to 200 nm. The nanostructures are generally crystalline and predominantly consist of the WO3 monoclinic (I) gamma-phase with some monoclinic (II) epsilon-phase and/or tungsten metal present. Under optimal synthesis conditions, only crystalline nanostructures with a largest dimension of similar to 200 nm are observed with TEM analyses. Further characterization conclusively shows that these 'optimal' nanostructures are comprised of only the WO3 monoclinic (I) gamma-phase. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：88 / 94

页数：7

共 14 条

[1] Low-temperature polymorphism in tungsten trioxide powders and its dependence on mechanical treatments [J].