WO_(2.50)纳米组装片的制备、表征及其在导电涂料中的应用  

Preparation and Characterization of WO_(2.50) Flakes Assembled from Nanoparticles and Its Application in Conductive Coating

作　　者：刘金库[1] 李雄平[2] 吴介达[2] 李晓银 

机构地区：[1]华东理工大学化学系,上海200237 [2]同济大学化学系 [3]上海天鑫环境科技有限公司

出　　处：《应用化学》2007年第4期439-442,共4页Chinese Journal of Applied Chemistry

摘　　要：利用内在还原法制备了长0.7～1.2μm,宽180～250 nm的WO2.50纳米组装片。通过透射电子显微镜观察发现,该纳米组装片是由直径约45 nm的纳米粒子组装而成的。产物由WO2.00和WO2.90两相组成,具有良好的结晶度,其比表面积为13.6 m2/g。产物具有良好的导电性(电阻率为0.1Ω.cm)和与树脂的亲和性。产物的红外光谱中,νW—O吸收峰发生了33 cm-3的红移。采用热重-差示扫描量热测试技术对前驱物进行了热分析,对实验条件进行了探索,确定最佳制备温度为750℃。对WO2.50纳米组装片的形成机理作了探讨,将其应用在导电涂料领域,测得漆膜的表面电阻率为5Ω.cm。The mixed valence oxide WO2.50 assembled flake was synthesized through internal redox method. Transmission electron microscope （TEM） observations indicated that the product was 0. 7 - 1.2μm long and 180-250 nm wide, which was assembled from nanoparticles with a diameter of about 45 nm. The product contained two phases, WO2.00 and WO2.90, and had a good crystallinity, and its specific surface area was 13.6 m^2/g. The product had good conductivity （ the resistivity was 0. 1Ωcm） 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 WO250 assembly flake was proposed. The WO2.50 asembled flake was applied in conductive coating field for the first time and the resistivity of the coating film was 5 Ω m.

关 键 词：纳米材料 混合价钨氧化物 导电涂料 

分 类 号：O61[理学—无机化学] TQ59[理学—化学]