Hot-Wire Chemical Vapor Deposition of Crystalline Tungsten Oxide Nanoparticles at High Density

A. H. Mahan; P. A. Parilla; K. M. Jones; A. C. Dillon

doi:10.1016/j.cplett.2005.07.037

Hot-Wire Chemical Vapor Deposition of Crystalline Tungsten Oxide Nanoparticles at High Density

A. H. Mahan, P. A. Parilla, K. M. Jones, A. C. Dillon

Materials Science

National Renewable Energy Laboratory

Research output: Contribution to journal › Article › peer-review

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Abstract

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 ∼10-50 nm diameters and ∼50-200 nm lengths. The nanoparticle size ranges from ∼10 to 200 nm. The nanostructures are generally crystalline and predominantly consist of the WO₃ monoclinic (I) γ-phase with some monoclinic (II) ε-phase and/or tungsten metal present. Under optimal synthesis conditions, only crystalline nanostructures with a largest dimension of ∼200 nm are observed with TEM analyses. Further characterization conclusively shows that these 'optimal' nanostructures are comprised of only the WO₃ monoclinic (I) γ-phase.

Original language	American English
Pages (from-to)	88-94
Number of pages	7
Journal	Chemical Physics Letters
Volume	413
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cplett.2005.07.037 https://doi.org/10.1016/j.cplett.2005.07.037
State	Published - 2005

NREL Publication Number

NREL/JA-520-37878

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title = "Hot-Wire Chemical Vapor Deposition of Crystalline Tungsten Oxide Nanoparticles at High Density",

abstract = "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 ∼10-50 nm diameters and ∼50-200 nm lengths. The nanoparticle size ranges from ∼10 to 200 nm. The nanostructures are generally crystalline and predominantly consist of the WO3 monoclinic (I) γ-phase with some monoclinic (II) ε-phase and/or tungsten metal present. Under optimal synthesis conditions, only crystalline nanostructures with a largest dimension of ∼200 nm are observed with TEM analyses. Further characterization conclusively shows that these 'optimal' nanostructures are comprised of only the WO3 monoclinic (I) γ-phase.",

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AU - Mahan, A. H.

AU - Parilla, P. A.

AU - Jones, K. M.

AU - Dillon, A. C.

PY - 2005

Y1 - 2005

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AB - 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 ∼10-50 nm diameters and ∼50-200 nm lengths. The nanoparticle size ranges from ∼10 to 200 nm. The nanostructures are generally crystalline and predominantly consist of the WO3 monoclinic (I) γ-phase with some monoclinic (II) ε-phase and/or tungsten metal present. Under optimal synthesis conditions, only crystalline nanostructures with a largest dimension of ∼200 nm are observed with TEM analyses. Further characterization conclusively shows that these 'optimal' nanostructures are comprised of only the WO3 monoclinic (I) γ-phase.

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JO - Chemical Physics Letters

JF - Chemical Physics Letters

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ER -

Hot-Wire Chemical Vapor Deposition of Crystalline Tungsten Oxide Nanoparticles at High Density

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