普鲁士蓝
结晶
纳米颗粒
材料科学
粒子(生态学)
聚合物
粒径
化学工程
聚乙烯吡咯烷酮
解吸
多孔性
纳米技术
比表面积
吸附
多孔介质
Crystal(编程语言)
高分子化学
化学
有机化学
复合材料
物理化学
计算机科学
催化作用
程序设计语言
工程类
地质学
海洋学
电化学
电极
作者
Ming Hu,Nagy L. Torad,Ya Dong Chiang,Kevin C.‐W. Wu,Yusuke Yamauchi
出处
期刊:CrystEngComm
[The Royal Society of Chemistry]
日期:2012-01-01
卷期号:14 (10): 3387-3387
被引量:154
摘要
The preparation of coordination polymer nanoparticles is currently the focus of research attention because of the advantage of increasing the specific surface area. In this paper, we report a facile method to prepare Prussian Blue (PB) nanoparticles with different particle sizes. Their particle sizes have a wide range from a few dozen nanometres to a submicrometre, depending on the synthetic conditions. The obtained particles can be divided into three categories: small (around 20 nm), medium-sized (around 100 nm), and large (in excess of 200 nm). The medium-sized and large particles are formed by oriented aggregation of fine nanoparticles, showing a mesocrystal conformation (i.e., pseudo-single crystal nature). Our results strongly suggested that non-classical crystallization dominates the present system, which can help to further control and understand the crystallization process of other coordination polymers. By means of N2 gas adsorption–desorption measurements, the nanoporosity and specific surface areas for typical samples with three different particle sizes are characterized. Among these samples, medium-sized PB particles show the highest surface area of 260 m2 g−1, while large PB particles exhibit very poor porosity. The results show that the gas uptakes of coordination polymers can be adjusted by the particle size and shape.
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