Synthesis of sodium tungsten oxide nano-thick plates

被引：27

作者：

Garavand, Nemat Tahmasebi ^{[1
]}

Mandavi, Seyed Mohammad ^{[1
,2
,3
]}

Irajizad, Azam ^{[1
,2
,3
]}

Ahadi, Kaveh ^{[4
,5
]}

机构：

[1] Sharif Univ Technol, Dept Phys, Tehran, Iran

[2] Sharif Univ Technol, Inst Nanosci, Tehran, Iran

[3] Sharif Univ Technol, Inst Nanotechnol, Tehran, Iran

[4] Sharif Univ Technol, Dept Mat Sci, Tehran, Iran

[5] Sharif Univ Technol, Dept Engn, Tehran, Iran

来源：

MATERIALS LETTERS | 2012年 / 82卷

关键词：

Nanoparticles; Deposition; Crystal structure; Crystal growth; Electroceramics; HYDROTHERMAL SYNTHESIS; GROWTH;

D O I：

10.1016/j.matlet.2012.05.106

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this letter a simple procedure to synthesize sodium tungsten oxide nano-thick plates from WO3 films has been reported. WO3 films were grown by pulsed-laser deposition method and then heat treated at temperatures up to 560 degrees C and times up to 120 min. Slide glass was used as both substrate and sodium source simultaneously. XRD analysis revealed presence of an amorphous structure for as-deposited WO3 films. On the other hand. XRD showed formation of a monoclinic WO3 structure with annealing in lower temperatures and a triclinic Na0.5WO3.25 structure with annealing at higher temperatures. Intensity of the triclinic phase peaks enhanced drastically by rising annealing temperature and time. SEM results depicted presence of Na0.5WO3.25 nano-thick plates with thickness of about 160 nm and width of about 3 mu m. Finally. XPS analysis revealed that heat treatment temperature does not affect tungsten valence state. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：214 / 216

页数：3

共 16 条

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