Morphological synthesis of Prussian blue analogue Zn3[Fe(CN)6]2•xH2O micro-/nanocrystals and their excellent adsorption performance toward methylene blue

被引:33
作者
Wu, Shikui [1 ,2 ]
Shen, Xiaoping [1 ]
Zhou, Hu [3 ]
Zhu, Guoxing [1 ]
Wang, Rongyan [2 ]
Ji, Zhenyuan [1 ]
Chen, Kangmin [1 ]
Chen, Chaojun [2 ]
机构
[1] Jiangsu Univ, Sch Mat Sci & Engn, Sch Chem & Chem Engn, Zhenjiang 212013, Peoples R China
[2] Inner Mongolia Med Univ, Coll Pharm, Hohhot 010059, Peoples R China
[3] Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212003, Peoples R China
基金
中国国家自然科学基金;
关键词
Prussian blue analogue; Micro-/nanocrystals; Synthesis; Organic dye; Adsorption; METAL-ORGANIC FRAMEWORKS; MOFS; CRYSTALLIZATION; REMOVAL; HEXACYANOFERRATE; NANOPARTICLES; NANOCRYSTALS; MIL-100(FE); COMPLEXES; ADSORBENT;
D O I
10.1016/j.jcis.2015.11.036
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Prussian blue analogue Zn-3[Fe(CN)(6)](2)center dot xH(2)O (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 1.016 g g(-1) due to the proper pore size and large specific surface area (643.2 m(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. (C) 2015 Elsevier Inc. All rights reserved.
引用
收藏
页码:191 / 197
页数:7
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