大长径比ZnS纳米线的制备、结构和生长机理  

Synthesis, Structure and Growth Mechanism of ZnS Nanowires with High Aspect Ratio

作　　者：邓战强[1] 齐俊杰[1] 张跃[1,2] 廖庆亮[1] 黄运华[1] 曹佳伟[1] 

机构地区：[1]北京科技大学材料物理与化学系,北京100083 [2]北京科技大学新金属材料国家重点实验室,北京100083

出　　处：《物理化学学报》2008年第2期193-196,共4页Acta Physico-Chimica Sinica

基　　金：国家重点基础研究发展计划(2007CB936201);科技部国际科技合作计划项目(2006DFB51000);国家863计划(2006AA03Z351);国家自然科学基金国际合作与交流项目(重大)(50620120439)

摘　　要：通过碳热辅助化学气相沉积法,以Au作为催化剂,在较低温度(800℃)制备了ZnS纳米线,其尺寸均匀,表面光滑,直径约为40nm,具有很大的长径比,是典型的单晶纤锌矿六方结构.高分辨透射电镜和选区电子衍射分析表明,纳米线的生长方向为[1100],与已报道的生长方向不同.纳米线的生长是由气-液-固(vapor-liquid-solid)机理控制的.ZnS nanowires were successfully synthesized through the direct reaction of Zn and S vapor via carbonassisted chemical evaporation deposition method with Au catalyst. The investigations indicated that the size of ZnS nanowires with a diameter of approximately 40 nm was uniform along the axis of the wire and the surfaces were slick. The ZnS nanowire with a hexagonal wurtzite structure was a typical single crystalline structure. HRTEM and SEAD results demonstrated that the nanowire grew along [1100] direction, which was different from the common direction reported in literatures. The growth of nanowires was controlled by vapor-liquid-solid （VLS） mechanism.

关 键 词：ZNS 纳米线 制备 结构 生长机理 

分 类 号：O614.241[理学—无机化学]