Synthesis of Water-Soluble Fe3O4 Nanopowder and its Cr(VI) Adsorption Properties

Hong Liang Wan; W. Deligeer; Si Qin Zhao; S. Asuha

doi:10.4028/www.scientific.net/AMR.624.55

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 624Synthesis of Water-Soluble Fe3O4 Nanopowder and...

Synthesis of Water-Soluble Fe₃O₄ Nanopowder and its Cr(VI) Adsorption Properties

Abstract:

In this work, water-soluble Fe₃O₄ nanopowder with mesoporous structure was prepared by the thermal decomposition of Fe-urea complex ([Fe(NH₂CONH₂)₆](NO₃)₃) in triethylene glycol (TEG), and the effects of reflux time and the concentration of precursor on the properties of Fe₃O₄ nanopowder were investigated. In addition, the adsorptive properties of the material were studied using Cr(VI) as a target pollutant. Prolonging reflux time and increase in concentration of [Fe(NH₂CONH₂)₆](NO₃)₃ in TEG can effectively improve the crystallinity and magnetic properties of the Fe₃O₄ nanopowder. The saturation magnetization (Ms) increases from 21.4 to 48.5 emu/g when the reflux time increases from 2 to 20 h. The maximum adsorption capacity of the Fe₃O₄ nanopowder for Cr(VI) is estimated to be 21.6 mg/g.

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Periodical:

Advanced Materials Research (Volume 624)

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55-58

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https://doi.org/10.4028/www.scientific.net/AMR.624.55

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Online since:

December 2012

Authors:

Hong Liang Wan, W. Deligeer, Si Qin Zhao, S. Asuha

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Adsorption, Chromium, Magnetite, Water-Soluble

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