The fabrication of a nanoscale polyoxometalate based magnetic adsorbent and its selective adsorption on cationic dyes |
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Authors: | Xiaoxing Zhang Tingting Lu |
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Institution: | Department of Chemistry, College of Science, Northeast University, Shenyang, People’s Republic of China |
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Abstract: | Amino group-functionalized Fe3O4 is loaded on a coordination complex-modified polyoxometalate nanoparticle. In this composite material, Fe3O4 and coordination complex-modified polyoxometalate are connected with intense hydrogen bonds as suggested by FTIR. This composite material exhibits excellent methylene blue (MB) adsorption, with adsorption capacity of 175.5 mg g?1. It also possesses selective separation ability between cationic and anionic dye molecules. In binary solution of MB and methyl orange (MO), MB adsorption efficiency reaches 75%, but it exhibits almost no effect on the adsorption of methyl orange. The saturation magnetization value of this composite material is 18.89 emu g?1, allowing magnetic separation, which facilitates the recycle and reuse of this composite adsorbent. |
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Keywords: | Magnetic adsorbent coordination complex-modified polyoxometalates amino-functionalized Fe3O4 selective adsorption on cationic dyes |
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