Green synthesis of iron-based nanoparticles from extracts of Nephrolepis auriculata and applications for Cr(VI) removal

Yunqiang YI, Guoquan TU, Po Keung Eric TSANG, Shihua XIAO, Zhanqiang FANG

Research output: Contribution to journalArticle

Abstract

The use of plant extracts as reducing agents may be preferable to use of chemical reduction reagent (i.e. sodium borohydride) to synthesis of iron-based nanoparticles for using in wastewater treatment. This report describes the successful synthesis of iron-based nanoparticles (NA-Fe-NPs) using extracts of Nephrolepis auriculata. TEM and XRD indicated that the core of NA-Fe-NPs were amorphous and spherical with size ranging from 40 to 70 nm. Meanwhile, FT-IR revealed that the flavonoids, polyphenols, organic acids in extracts were responsible for reducing Fe³⁺ and coating/stabilizing the iron-nanoparticles. The removal of Cr(VI) wastewater using NA-Fe-NPs suggested that 90.93% of Cr(VI) were removed, demonstrated the feasibility of the materials for environmental remediation. Copyright © 2018 Elsevier B.V. All rights reserved.
LanguageEnglish
Pages388-391
JournalMaterials Letters
Volume234
Early online dateSep 2018
DOIs
Publication statusPublished - Jan 2019

Fingerprint

Iron
Nanoparticles
iron
nanoparticles
synthesis
Plant extracts
Flavonoids
borohydrides
Organic acids
Reducing Agents
Plant Extracts
Polyphenols
Reducing agents
Wastewater treatment
reagents
Wastewater
Sodium
sodium
Transmission electron microscopy
coatings

Citation

Yi, Y., Tu, G., Tsang, P. E., Xiao, S., & Fang, Z. (2019). Green synthesis of iron-based nanoparticles from extracts of Nephrolepis auriculata and applications for Cr(VI) removal. Materials Letters, 234, 388-391. doi: 10.1016/j.matlet.2018.09.137

Keywords

  • Metallic composites
  • Nanoparticles
  • Zero-valent iron
  • Green synthesis
  • Hexavalent chromium