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.
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页码：88 / 94
页数：7
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