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Citation: LIU Jin-Ku, LI Xiong-Ping, WU Jie-Da, LI Xiao-Yin. Preparation and Characterization of WO_2.50 Flakes Assembled from Nanoparticles and Its Application in Conductive Coating[J]. Chinese Journal of Applied Chemistry, ;2007, 24(4): 439-442. shu

Preparation and Characterization of WO_2.50 Flakes Assembled from Nanoparticles and Its Application in Conductive Coating

1.
a Department of Chemistry, East China University of Science and Technology, Shanghai 200237;
2.
b Department of Chemistry, Tongji University, Shanghai;
3.
c Shanghai Tianxin Environment Science and Technology Co., Ltd., Shanghai

Corresponding author: LIU Jin-Ku,
Received Date: 9 May 2006
Available Online: 2 September 2006

The mixed valence oxide WO_2.50 assembled flake was synthesized through internal redox method.Transmission electron microscope(TEM) observations indicated that the product was 0.7~1.2 μm long and 180~250 nm wide,which was assembled from nanoparticles with a diameter of about 45 nm.The product contained two phases,WO_2.00 and WO_2.90,and had a good crystallinity,and its specific surface area was 13.6 m²/g.The product had good conductivity(the resistivity was 0.1 Ω·cm) and affinity for resin.The absorption peak of the product in the FT-IR spectrum had a "red shift" of 33 cm^-1.The thermochemistry of the precursor has been studied by TG-DSC,and the best reaction temperature was found to be 750℃.The formation mechanism of the WO_2.50 assembly flake was proposed.The WO_2.50 asembled flake was applied in conductive coating field for the first time and the resistivity of the coating film was 5 Ω·m.
- nanomaterials,
- mixed valence tungsten oxide,
- conductive coating
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Preparation and Characterization of WO2.50 Flakes Assembled from Nanoparticles and Its Application in Conductive Coating

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通讯作者: 陈斌, bchen63@163.com

Preparation and Characterization of WO_2.50 Flakes Assembled from Nanoparticles and Its Application in Conductive Coating