Journal
DALTON TRANSACTIONS
Volume 41, Issue 15, Pages 4544-4551Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2dt11827k
Keywords
-
Categories
Funding
- Natural Science Foundation of Jilin Province of China [20101542]
- National Foundation of Doctoral Station [20100061110019]
Ask authors/readers for more resources
In this contribution, we synthesized water-soluble Fe3O4 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 Fe3O4 NPs were used as adsorbents for heavy-metals removal from wastewater. It is noteworthy that the adsorption ability of the water-soluble Fe3O4 NPs for Pb2+ and Cr6+ is stronger than water-insoluble Fe3O4 NPs. Furthermore, the water-soluble Fe3O4 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 Fe3O4 NPs show a highly-efficient adsorption capacity for 10 ppm of Pb2+ ions solution which can reach 90% within 2 minutes.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available