Chemical, structural, and morphological characterization of tungsten nanoparticles synthesized by a facile chemical route

被引：13

作者：

Sahoo, Prasanta Kumar ^{[1
]}

Kamal, Sarika Srinivas Kalyan ^{[1
]}

Durai, Loganathan ^{[1
]}

Sreedhar, Bojja ^{[2
]}

机构：

[1] Def Met Res Lab, Hyderabad 500058, Andhra Pradesh, India

[2] Indian Inst Chem Technol, Hyderabad 500007, Andhra Pradesh, India

来源：

JOURNAL OF MATERIALS RESEARCH | 2011年 / 26卷 / 05期

关键词：

ROOM-TEMPERATURE; THIN-FILMS; THERMAL-DECOMPOSITION; NANOPOWDERS; HEXACARBONYL; NANOCRYSTALS; SUBSTRATE;

D O I：

10.1557/jmr.2010.76

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Tungsten nanoparticles (W-NPs) with average sizes ranging between 30 and 80 nm were prepared by thermolytic decomposition of tungsten hexacarbonyl in presence of a mixture of surfactants, oleic acid and oleyl amine. Fourier transform infrared spectroscopy and x-ray photoelectron spectroscopy (XPS) results reveal that the surfactants oleic acid and oleyl amine bonded to the surface of W-NP through their functional groups, which in turn render stability to the nanopowders with respect to coarsening or aggregation. XPS results also confirm that carbon is present only at the surface of the W-NPs. The as-synthesized W-NPs were amorphous, and on heat treatment at 600 degrees C for 1 h, the amorphous powders transform into a body-centered cubic crystalline form (alpha-W).

引用

页码：652 / 657

页数：6

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