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中文摘要：
采用水热法制备了六角星形的Cu2O微米晶,通过X射线衍射及透射电子显微镜等手段对产物进行了表征,结果表明,六角星形貌是通过侵蚀八面体的（111）面形成的.研究发现,反应物的浓度对产物的形貌有重要影响,即只有在反应物的浓度低于一定值时才会形成八面体,增加浓度会使产物形貌由八面体逐渐转变成球形;氨水和柠檬酸对产物的形貌也有一定的影响,柠檬酸钠在反应中起还原剂的作用,同时作为表面活性剂还能起到控制形貌的作用.
英文摘要：
Hexagram-like cuprous oxide microcrystals were prepared by hydrothermal approach.The hexagram-like cuprous oxide microcrystals are produced by etching the six（111） facets in octahedron.The in-fluence of reaction parameters on the shape and size of products was discussed,the concentration of precursor has important effect on the shape of products.Only the concentration of procursor is low enough,the cuprous oxide octahedron should be formed.With increasing the concentration,the shape of products would transform to sphere.Ammonia has influence on the shape.Sodium citrate is the reduction and surfactant in the reaction.The etching on the octahedron is induced by both ammonia and sodium citrate.
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