中文摘要：

采用新制备的Cu2O和Al（OH）3为反应原料，利用水热-分解法制备了P型半导体CuAlO3纳米晶。采用X射线衍射（XRD）、透射电子显微镜（TEM）、X射线光电子能谱（XPS）和紫外-可见（UVVis）吸收光谱对其结构、形貌、表面组分和性能进行了表征分析，对反应机理进行了讨论。结果表明在水热条件下首先是Al（OH）4转化为γ-AlOOH，然后γ-AlOOH分解并与Cu2O反应生成CuAlO2纳米晶。确定了以Cu2O和Al（OH）3溶胶为反应原料，采用水热-分解法制备CuAlO2纳米晶的最佳反应条件。

英文摘要：

p-type semiconductor of CuAlO2 nanocrystals were synthesized by the hydrothermal-decomposition using newly prepared Cu2O and Al（OH）3 as reactants. Its structure, particle size and appearance, optical property was characterized with XRD,TEM, XPS and UV-Vis techniques, the reaction mechanism were discussed. The synthesis process included the transformation of Al（OH）3 colloid into γ-AlOOH, which then decompose and react with Cu2O to get CuAlO2 nanoparticles. It is shown that this method can largely lower the reaction temperature, reduce the reaction time,and obtain well-distributed CuAlO2 nanocrystals with better semiconductor characteristics,which make its application more promising.