WS2花形纳米晶的制备和表征  

Preparation and Characterization of WS_2 Floriated Nano-crystal

作　　者：彭世玉[1] 赵鹏[1,2] 裴新意[2] 赵亚丽[2] 

机构地区：[1]西安建筑科技大学材料科学与工程学院,陕西西安710055 [2]长安大学材料科学与工程学院,陕西西安710054

出　　处：《热加工工艺》2008年第22期23-25,共3页Hot Working Technology

基　　金：国家自然科学基金资助项目(50472028);陕西省自然科学基金资助项目(2005E122)

摘　　要：采用溶胶-凝胶法,将钨酸钠水溶液经阳离子交换树脂获得的三氧化钨溶胶与硫粉混合。在高压反应釜中于650℃加热2 h。采用扫描电镜(SEM)和粉末X射线衍射(XRD)等手段对所制备的样品进行检测分析,对纳米花晶体的制备、影响因素进行初步探讨。结果证实所得灰黑色产物是花形二硫化钨纳米颗粒,组成花的片状单晶长宽约为几十个纳米,厚度约5 nm。Tungstic trioxide sols were obtained from exchanging Na2WO4 with proton in cation resin using sol-gel method. The mixture of tungstic trioxide sols and sulfur powder were treated at 650℃ for 2 h in high-pressure reactor. The specimen was investigated by scanning electron microscopy （SEM） and X-ray diffraction （XRD）, the influence factors and the preparation of nano-crystal flower were preliminarily studied. The results show that the black products are confirmed as WS2 floriated nano-crystal which is about 5 nrn in thickness, and tens in length and width respectively.

关 键 词：花形纳米晶 高温自加压 二硫化钨(WS2) 

分 类 号：O643.131[理学—物理化学]