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Characteristics of CeO_2 nanocubes and related polyhedra prepared by using a liquid-liquid interface

机译:液-液界面制备CeO_2纳米立方体及其相关多面体的特性

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Monodispersed CeO_2 nanocubes were prepared by using a liquid-liquid interface. The morphology of CeO_2 nanocrystals from the aqueous phase changed from truncated octahedron to nanocube in the toluene phase at the water-toluene interface. The CeO_2 nanocubes oriented to form large cubic particles at a low molar ratio of oleic acid (OLA)/Ce. The red-shift of the absorption edge and the high concentration of Ce~(3+) in the CeO_2 structure was identified for the CeO_2 nanocrystals. The high concentration of Ce~(3+) in the CeO_2 structure was identified as one of the main reasons for the red-shift of the absorption edge of CeO_2 nanocrystals.
机译:利用液-液界面制备了单分散的CeO_2纳米立方体。在水-甲苯界面处,水相中的CeO_2纳米晶体的形态在甲苯相中从截断的八面体变为截短的八面体。 CeO_2纳米立方体的取向是在油酸(OLA)/ Ce的低摩尔比下形成大的立方颗粒。对于CeO_2纳米晶体,发现了CeO_2结构中吸收边的红移和高浓度的Ce〜(3+)。 CeO_2结构中高浓度的Ce〜(3+)被认为是CeO_2纳米晶体吸收边红移的主要原因之一。

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