CuCl-intermediated construction of short-range-ordered Cu2O mesoporous spheres with excellent adsorption performance
CuCl-intermediated construction of short-range-ordered Cu2O mesoporous spheres with excellent adsorption performance
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CuCl介导构建具有优异吸附性能的短程有序Cu2O介孔球
DOI：
10.1039/c1jm14258e
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发表时间：
2012-01-01
影响因子：
--
通讯作者：
Guo, Lin
中科院分区：
文献类型：
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作者：
Shang, Yang;Zhang, Dongfeng;Guo, Lin
表面活性剂定向自组装(SDSA)是近年来合成有序介孔氧化物材料的一种很有前途的方法。该方法的一个关键步骤是控制无机前驱体的水解-缩合速率，以便与结构导向剂(SDA)进行良好的共组装。基于溶度积原理，我们提出了一种新的策略，即利用水不溶中间体作为缓冲剂来减缓无机物种的水解率，从而促进协同组织过程来构建有序介孔材料。在三嵌段共聚物Pluronic P123(EO20PO70EO20)的辅助下，得到了具有短程有序结构的氧化亚铜介孔微球(Cu2O MPS)。所制备的独特结构具有良好的吸附性能，在室温下，以甲基橙为污染物，其最大吸附容量是商业活性炭的3.4倍。该方法具有简单、易控制、产率高等优点，为其他介孔结构材料的制备提供了一个很好的思路。
Surfactant-directed self-assembly (SDSA) had become a promising approach towards the synthesis of ordered mesoporous oxide materials in recent years. A key step in this method is to control the hydrolysis-condensation rates of inorganic precursors for good co-assembly with a structure-directing agent (SDA). Based on the principle of solubility product, we propose a new strategy, namely using water-insoluble intermediates as a “buffer” to retard the hydrolysis rates of inorganic species and thus facilitate the cooperative organization process to construct ordered mesoporous materials. Cuprous oxide mesoporous spheres (Cu2O MPS) with short-range-ordered structure were obtained with the assistance of triblock copolymers Pluronic P123 (EO20PO70EO20) to demonstrate this concept. The as-prepared unique structures exhibit excellent adsorption ability, and the maximum adsorption capacities is 3.4 times that of commercial activated carbon, at room temperature with methyl orange as pollutant. With the advantage of simple, easy control and high yield, it may provide a good idea for the preparation of other mesoporous structured materials.