中文摘要：

目的一步制备和调控Cu/Cu2O材料。方法采用水热法合成Cu/Cu2O材料,通过改变反应时间、温度,原料投料量以及乙醇和水混合溶液中溶剂比等参数来调控Cu/Cu2O复合材料的晶体形貌和Cu含量。结果增加氨水和甲酸使用量会明显提升Cu/Cu2O复合材料中的Cu含量,硝酸铜和混合溶液（乙醇＋水）中水量增加会使Cu/Cu2O复合材料中Cu含量减少,而反应时间和反应温度均不会使复合材料中Cu量发生变化。氨水和甲酸使用量的增加,会使样品从菜花状、正八面体或十二面体向类球状转变。而硝酸铜和混合溶液（乙醇＋水）中水量增加恰好使得样品形貌向相反方向变化。另外,反应温度过高会使得晶体向正八面体转变并且逐渐出现孔隙。结论通过改变样品合成参数可成功调控Cu/Cu2O复合材料中Cu含量和形貌。

英文摘要：

Objective To prepare and control Cu/Cu2O composite in only one-step. Methods Crystal morphology and copper content of Cu/Cu2O composite made through the hydrothermal method was controlled by changing reaction time, temperature, usage amount of raw material, proportion of ethyl alcohol and water mixed solution, etc. Results The copper content in Cu/Cu2O composite increased significantly with the adding of ammonium hydroxide and formic acid, but decreased with the adding of copper nitrate and water content in the mixed solution（ethyl alcohol and water）. However, there was no obvious variation in the copper content of Cu/Cu2O composite with changes of reaction temperature and time. Moreover, the morphology of the sample changed from cauliflower shape, regular octahedron, regular octahedron and dodecahedron to near-spherical shape with the increasing of ammonium hydroxide and formic acid, but the changes of morphology were to the contrary with the increasing of copper nitrate and water content in the mixed solution（ethyl alcohol and water）. In addition, the morphology of crystal changed to regular octahedron and generated pores with the increasing of the reaction temperature. Conclusion Cu content and morphology of Cu/Cu2O composite can be regulated successfully by changing the synthesis parameters.