1. Plant-mediated synthesis of highly active iron nanoparticles for Cr (VI) removal: Investigation of the leading biomolecules.
- Author
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Xiao Z, Yuan M, Yang B, Liu Z, Huang J, and Sun D
- Subjects
- Chlorides chemistry, Environmental Restoration and Remediation, Ferric Compounds chemistry, Green Chemistry Technology, Microscopy, Electron, Transmission, Plant Extracts biosynthesis, Plant Leaves chemistry, Surface Properties, Water Pollutants, Chemical chemistry, X-Ray Diffraction, Chromium analysis, Iron chemistry, Metal Nanoparticles chemistry, Plant Extracts chemistry, Water Pollutants, Chemical analysis
- Abstract
The eco-friendly synthesis and application of Fe nanoparticles (Fe NPs) with higher activity and stability has aroused wide attention in the field of pollutant remediation. In this work, 15 plants extracts were selected for the plant-mediated synthesis of Fe NPs. The as-synthesized particles' morphology and structure were characterized by transmission electron microscopy, X-ray diffraction and UV-Vis spectroscopy. The contents of four main active biomolecules in the 15 extracts were determined, and comparative studies were further carried out to clarify the key component closely related to the reducing capacity. The results demonstrate that polyphenol is the leading ingredient involved in the biosynthesis of Fe NPs. Then Fe products synthesized by three extracts with distinct content of polyphenol were employed to remove Cr (VI) in the aqueous solution, indicating that the activity of the Fe NPs for Cr (VI) removal is consistent with the reducing capacity of the extracts. Furthermore, the Fe NPs synthesized by S. jambos（L.） Alston extract (SJA-Fe NPs) showed significant removal capacity of Cr(VI) with 698.6 mg Cr(VI) per g of iron., (Copyright © 2016 Elsevier Ltd. All rights reserved.)
- Published
- 2016
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