摘要
热蒸发Zn与醋酸锌(ZAc)混合物,在650℃,无催化剂的条件下制备了四针状氧化锌(T-ZnO)纳米材料,通过调节Ar与O2气流量,在不同条件下能得到不同形貌的T-ZnO纳米结构。HR-TEM研究显示T-ZnO纳米结构的每个针体沿[0001]方向生长。探讨了T-ZnO的生长机理,其生长过程中存在自催化的过程,ZAc的存在起到了良好的催化效果。
Tetrapod-shaped ZnO(T-ZnO) nanostructures were synthesized via a self-catalytic method by vaporization of Zn and zinc acetate(ZAc) powder at 650℃ without any catalyst.By adjusting the flow of gases Ar and O2 experimental parameters,different morphological T-ZnO nanostructures were synthesized.HRTEM indicated that the growth of each leg of the T-ZnO was along the direction.Moreover,a self-catalysis VLS growth mechanism was responsible for the formation of the ZnO nanotetralegs.The existence of ZAc exerted a ...
出处
《中国体视学与图像分析》
2008年第4期232-236,共5页
Chinese Journal of Stereology and Image Analysis
基金
973项目(2007CB936201)
国际重大合作项目(50620120439
2006DFB51000)
国家自然科学基金项目(50772011)
人才项目(NCET-07-0066)的资助