一种通过控制反应物蒸气压和加热温度合成氧化锌中空结构的方法

In this article, ZnO micro-tube was successfully prepared using mixed powder of Zn, ZnO and C as source at high heating temperature. The growth process was discussed in detail, the high Zn vapor pressure and high growing temperature were considered as two crucial factors determining the growth behavior of reagent species, and a two-step growth model composed of deficient-oxidation and second-volatilization was proposed to explain the formation of tubular structure. Four another experiments were conducted to analyze the growth behavior of reagent species under different Zn vapor pressure and heating temperature with higher and lower value, respectively. These experimental results could be well explained by our proposed growth model, and these comparing experiments also approved the validity of our growth model. The growth analysis were helpful in comprehending the microcosmic growth behavior of reagent species in the vapor growth route, and our experiments method provided a feasible route to prepare tubular building blocks for functional nanodevices.