School of Chemistry and Chemical Engineering, School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, PR China; Inner Mongolia Medical University, College of Pharmacy, Hohhot 010059, PR China.
School of Chemistry and Chemical Engineering, School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, PR China.
J Colloid Interface Sci. 2016 Feb 15;464:191-7. doi: 10.1016/j.jcis.2015.11.036. Epub 2015 Nov 18.
Prussian blue analogue Zn3[Fe(CN)6]2⋅xH2O (Zn-PBA) micro-/nanocrystals with well-defined spherical, cubic and polyhedral morphologies have been successfully synthesized by a simple room-temperature solution method. The morphologies and sizes of the micro-/nanocrystals can be easily tuned by HCl dosage and polymer additive. The as-prepared products are characterized by X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, thermogravimetric analysis and Brunauer Emmet Teller adsorption-desorption analysis. The possible formation mechanism for these Zn-PBA micro-/nanocrystals is then proposed. In addtion, adsorption performances of these micro-/nanocrystals toward organic dyes are systematically investigated. It is demonstrated that they exhibit strong adsorption selectivity to methylene blue (MB) with an extraordinary adsorption capacity as high as 1.016gg(-1) due to the proper pore size and large specific surface area (643.2m(2)g(-1)) of the product as well as the strong electrostatic interaction between MB molecules and Zn-PBA particles. It is found that the morphology and size of the micro-/nanocrystals have an important effect on their adsorption performance. Moreover, the adsorbed MB dye can be well released in some organic solvents such as ethanol and trichloromethane. The facile morphology-controlled synthesis and excellent adsorption property afford the materials promising application in adsorption related fields.
普鲁士蓝类似物 Zn3[Fe(CN)6]2⋅xH2O（Zn-PBA）具有规则的球形、立方和多面体形貌的微/纳米晶体，通过简单的室温溶液法成功合成。微/纳米晶体的形态和尺寸可以通过 HCl 剂量和聚合物添加剂轻松调节。通过 X 射线粉末衍射、扫描电子显微镜、透射电子显微镜、热重分析和 Brunauer Emmet Teller 吸附-解吸分析对所制备的产物进行了表征。然后提出了这些 Zn-PBA 微/纳米晶体的可能形成机制。此外，还系统研究了这些微/纳米晶体对有机染料的吸附性能。结果表明，由于产物的适当孔径和大的比表面积（643.2m2g-1）以及 MB 分子与 Zn-PBA 颗粒之间的强静电相互作用，它们对亚甲蓝（MB）表现出很强的吸附选择性和非凡的吸附容量，高达 1.016gg-1。结果发现，微/纳米晶体的形态和尺寸对其吸附性能有重要影响。此外，吸附的 MB 染料可以在一些有机溶剂如乙醇和三氯甲烷中很好地释放。这种简便的形态控制合成和优异的吸附性能为该材料在吸附相关领域的应用提供了广阔的前景。
