欢迎访问过程工程学报, 今天是

›› 2004, Vol. 4 ›› Issue (3): 239-244.

• 反应与分离 • 上一篇    下一篇

热分解法制备WS2纳米纤维

马江虹,翟玉春,李在元   

  1. 东北大学材料与冶金学院
  • 出版日期:2004-06-20 发布日期:2004-06-20

Preparation of Tungsten Disulfide Nanofibers by Thermal Decomposition

MA Jiang-hong,ZHAI Yu-chun,LI Zai-yuan   

  1. College of Material and Metallurgy, Northeastern University
  • Online:2004-06-20 Published:2004-06-20

摘要: 以硫钨酸铵为原料,用热分解法制备出了WS2纳米纤维,采用TEM, HRTEM, XRD等分析手段对产物的形貌、结构、组成进行了检测,表明制备出的灰黑色WS2纳米纤维平均直径为几十纳米,最小只有几纳米,长度为几十微米;产物属六方晶系,a=0.3151 nm, c=1.271 nm,基本无杂质,较纯净. ED分析表明纤维为单晶,晶化程度好,(100)和(002)等衍射斑点清晰,与XRD分析结果一致. 对WS2纳米纤维生长的影响因素如温度、升温速率、冷却速率和反应气氛、反应物的粒度等进行了讨论.

关键词: WS2纳米纤维, 热分解, 表征, 影响因素

Abstract: The method of preparing tungsten disulfide nanofibers by the thermal decomposition of ammonium tetrathiotungstate is reported, and TEM, HRTEM and XRD were employed to investigate the shape, structure and component of the product whose average diameter was less than 100 nm and the length longer than 10 mm. It is revealed that the product was dark-gray crystals with hexagonal lattice tungsten disulfide, a=0.3151 nm, c=1.271 nm, and quite pure. ED patterns show that the nanofibers were mono-crystal, highly crystallized, and the electron diffraction spots such as (100) and (002) were very clear. The factors such as the rate of raising temperature, cooling rate, atmosphere and reactant size were found to be dominating to the nanofibers growth.

Key words: tungsten disulfide nanofibers, thermal decomposition, characterization, influence factors