Water-soluble Fe3O4 nanoparticles with high solubility for removal of heavy-metal ions from waste water

Dalton Transactions : an International Journal of Inorganic Chemistry
Lixia WangLijun Zhao

Abstract

In this contribution, we synthesized water-soluble Fe(3)O(4) nanoparticles (NPs) with sufficiently high solubility (28 mg mL(-1)) and stability (at least one month) through a hydrothermal approach, and found that they exhibited excellent removal ability for heavy-metal ions from waste water. For the first time, the water-soluble Fe(3)O(4) NPs were used as adsorbents for heavy-metals removal from wastewater. It is noteworthy that the adsorption ability of the water-soluble Fe(3)O(4) NPs for Pb(2+) and Cr(6+) is stronger than water-insoluble Fe(3)O(4) NPs. Furthermore, the water-soluble Fe(3)O(4) NPs exhibited relatively high saturation magnetization (83.4 emu g(-1)), which allowed their highly-efficient magnetic separation from wastewater. The most important thing is that the water-soluble magnetite as an adsorbent can directly dissolve in water without the help of mechanical stirring or any extraneous forces, which may solve a key problem for the practical application of magnetic powders in the field of sewage purification. Moreover, the water-soluble Fe(3)O(4) NPs show a highly-efficient adsorption capacity for 10 ppm of Pb(2+) ions solution which can reach 90% within 2 minutes.

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Citations

Aug 21, 2013·Tumour Biology : the Journal of the International Society for Oncodevelopmental Biology and Medicine·Xifeng DongJack Jia
Feb 7, 2014·Journal of Environmental Health Science & Engineering·Mohammad Hossein SalmaniMohsen Askarishahi
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Nov 20, 2012·Journal of the American Chemical Society·Dachao HongShunichi Fukuzumi
Jun 5, 2014·ACS Applied Materials & Interfaces·Ying-Mei LiuLiang-Yin Chu
Mar 27, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Shuojue WangMaolin Zhai
May 27, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·Yue TengYong Xin Qian
Jun 20, 2014·Dalton Transactions : an International Journal of Inorganic Chemistry·Jianzhi WangXian Gao
Mar 3, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Ahmed RagabDina Bader
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Jul 11, 2018·International Journal of Molecular Sciences·Uliana De SimoneTeresa Coccini
Apr 7, 2020·Journal of Environmental Management·Zeeshan AjmalRenjie Dong
Apr 2, 2020·Journal of Dentistry·Marcela Charantola RodriguesAmedea Barozzi Seabra
May 1, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Xinxin LongRongzhi Chen
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