采用水热反应法,通过调节反应时间制备得到了不同形貌的CdSe纳米晶材料,并用TEM、XRD、EDS、XPS等分析手段对其形貌结构进行表征.研究表明,在反应温度为180℃的条件下,所得产物均为六方晶相的CdSe 纳米晶,形貌随着反应时间的改变而发生变化:当控制反应时间为2h、5h、10 h时,得到的CdSe纳米晶的形貌分别为树枝状、由树枝状到棒状过渡的簇状及棒状.分析了CdSe纳米晶形成的化学反应原理,并运用结晶学原理和相关模型理论对CdSe纳米晶的形成机理及其形貌变化进行了探讨.
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