Delicate control of crystallographic facet-oriented Cu2O nanocrystals and the correlated adsorption ability
Delicate control of crystallographic facet-oriented Cu2O nanocrystals and the correlated adsorption ability
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晶面取向 Cu2O 纳米晶体的精细控制及其相关吸附能力
DOI：
10.1039/b816349a
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发表时间：
2009-01-01
影响因子：
--
通讯作者：
Zhang, Ze
中科院分区：
文献类型：
--
作者：
Zhang, Dong-Feng;Zhang, Hua;Zhang, Ze
在这项工作中，我们展示了系统和微妙的几何形状控制的Cu2O纳米晶体，利用选择性表面稳定效应。通过简单地调节添加的PVP，实现了从立方体到截顶立方体、立方八面体、截顶八面体和最后到八面体的各种Cu2O结构。基于对赤铜矿Cu2O和PVP内在结构特征的认识，阐明了其内在的形态演化机制。所制备的产物表现出晶体学依赖的吸附能力与甲基橙子（MeO）作为污染物。该方法具有成本低、产率高、操作简单等优点，不需要预先形成的晶体作为牺牲模板，为研究其他纳米晶体的形状结构和形貌相关性质提供了一个良好的起点。
In this work, we demonstrate the systematic and delicate geometry control of Cu2O nanocrystals by taking advantage of the selective surface stabilization effect. A variety of Cu2O architectures, evolved from cubes through truncated cubes, cubooctahedrons, truncated octahedrons and finally to octahedrons, were achieved by simply adjusting the added PVP. Based on the understanding of the intrinsic structural features of the cuprite Cu2O and PVP, we elucidated the underlying shape evolution mechanism. The as-prepared products demonstrated a crystallography-dependent adsorption ability with methyl orange (MeO) as the pollutant. With the advantage of a low cost, high yield and straightforward procedure without pre-formed crystals as sacrificial templates, this method may provide a good starting point for the study of shape construction and morphology-dependent properties of other nanocrystals.