有机胺为模板合成WS_2纳米棒  

Synthesis of WS_2 Nanorods with Amine as Template

作　　者：武继芬[1,2] 刘同萍 张永恒[1] 

机构地区：[1]青岛科技大学材料科学与工程学院,山东青岛266042 [2]临沂煤炭技术学院,山东临沂276017

出　　处：《青岛科技大学学报（自然科学版）》2008年第5期405-408,共4页Journal of Qingdao University of Science and Technology:Natural Science Edition

摘　　要：在水溶液中分别用二乙烯三胺和三乙烯四胺与WS42-形成2个前躯体（pipH2）.[WS4]和（trenH2）[WS4].H2O（pip=C4H13N3,tren=C6H18N4）,将此2前驱物黄色沉淀在氩气氛中高温裂解合成了WS2纳米材料。同时,把硫代钨酸铵晶体（NH4）2WS4在相同条件下煅烧,以其作比较探讨了有机胺对产品形貌的影响。用X射线衍射仪对样品进行了物相分析,显示WS2相为单相;用透射电镜观察其形貌,确定其分别为粒径100~150nm、长度大于1μm的棒状结构和粒径为微米级的片状结构。考察了升温梯度对产品形貌的影响,并对WS2纳米棒的形成机理进行了初步探讨。In aqueous solution, two precursors （pipH2） [WS4] and （trenH2） [WS4] ·H2O（pip= diethylenetriamine, tren= tris（2-amino-ethyl） amine） were formed by reaction of DETA and tren with WS4^2- , respectively. WS2 nanomaterials were synthesized by direct pyrolysis of the two processors at 850℃in an argon. Meanwhile, compared with the as-synthesized WS2 nanoparticles, （NH4）2WS4 crystals were annealed under the same condition to explore the influence of amines on morphology of the products. The patterns of XRD indicated that both of the as-synthesized WS2 were pure phase. TEM showed that both were nanorods with diameters of 100-150 nm and length more than 1μm, and sheets with micrometeric diameters, respectively. The influence of temperature grads on morphology were studied and the formation mechanism of morphology were discussed.

关 键 词：二硫化钨 二乙烯三胺 三乙烯四胺 纳米棒 

分 类 号：TQ136[化学工程—无机化工]