【摘要】 借助气相输运凝结方法,采用Ag_χAu_1-x合金作为催化剂,在较低的650℃下成功制备出氧化锌纳米双晶薄片.高分辨结构表征证实该薄片中存在{10-13}孪晶界面.系列地对比实验表明高的锌蒸汽浓度和Ag_χAu_1-x合金催化作用是孪晶成核的必要条件.还发现衬底上制备出的氧化锌纳米孪晶薄片的密度可以通过合金催化剂中的银金成分比例加以调节。更多还原

【Abstract】 ZnO bicrystalline nanosheets have been synthesized by using AgxAu1-xalloy catalyst via the vapor transport and condensation method at 650℃. High resolution transmission electron microscopy characterization reveals a twin boundary with {01-13} plane existing in the bicrystalline. A series of control experiments show that both AgxAu1-xalloy catalyst and high supersaturation of Zn vapor are prerequisites for the formation of ZnO bicrystalline nanosheet. Moreover, it is found that the density of ZnO bicrytalline nanosheets can be tuned through varying the ratio of Ag to Au in the alloy catalyst. The result demonstrates that new complicated nanostructures can be produced controllably with appropriate alloy catalyst.更多还原