Morphology-Controllable Synthesis of Metal Organic Framework Cd3[Co(CN)6]2路nH2O Nanostructures for Hydrogen Storage Applications

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• 作者：Lin Hu ; Ping Zhang ; Qianwang Chen ; Hao Zhong ; Xianyi Hu ; Xinrui Zheng ; Yu Wang ; Nan Yan
• 刊名：Crystal Growth & Design
• 出版年：2012
• 出版时间：May 2, 2012
• 年：2012
• 卷：12
• 期：5
• 页码：2257-2264
• 全文大小：498K
• 年卷期：v.12,no.5(May 2, 2012)
• ISSN：1528-7505

文摘

In this paper, a potential strategy for increasing the hydrogen sorption has been demonstrated by using the nanostructure of metal organic framework. Prussian Blue analogue (PBA) Cd₃[Co(CN)₆]₂路nH₂O nanocubes and octahedrons were successfully obtained at room temperature in the presence of poly(vinylpyrrolidone) (PVP) and sodium dodecylbenzenesulfonate (SDBS), respectively. The as-prepared products were characterized by X-ray powder diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and thermogravimetric analysis (TGA). Detailed proof indicated that the synthetic parameters such as surfactant, the ratio of different solvents (water and ethanol) play crucial roles in the morphology and size of the nanoparticles. The fine-detailed information about porous structures of the samples has also been studied using the Brunauer鈥揈mmet鈥揟eller isotherm. Most importantly, two kinds of nanostructures both display high adsorption on H₂ and CO₂, showing enhanced adsorption properties compared with the bulk materials. To our knowledge, this is the first report on the synthesis of Cd₃[Co(CN)₆]₂ nanomaterials and their H₂, CO₂ adsorption applications at the nanoscale.