Comparisons of the reactivity, reusability and stability of four different zero-valent iron-based nanoparticles

Yingying XIE, Zhanqiang FANG, Xinhong QIU, Po Keung Eric TSANG, Bin LIANG

Research output: Contribution to journalArticles

25 Citations (Scopus)

Abstract

Our previous reports showed that nano zero-valent iron (nZVI), steel pickle liquor for the synthesis of nZVI (S-nZVI), nZVI immobilised in mesoporous silica microspheres (SiO2@FeOOH@Fe) and nano Ni/Fe bimetallic particles (Ni/Fe) have been proved to show good property for elimination of polybrominated diphenyl ethers (PBDEs). However, it is necessary to compare their reactivity, reusability and stability when applied to in situ remediation. In this study, the performances of different iron-based nanoparticles were compared through reusability, sedimentation and iron dissolution experiments. The SiO2@FeOOH@Fe and Ni/Fe nanoparticles were shown to have higher reusability and stability, as they could be reused more than seven times, and that the SiO2@FeOOH@Fe can effectively avoid leaching iron ions into the solution and causing secondary pollution in the reaction. This study may serve as a reference for PBDE remediation in the future. Copyright © 2014 Elsevier Ltd.
Original languageEnglish
Pages (from-to)433-436
JournalChemosphere
Volume108
DOIs
Publication statusPublished - Aug 2014

Citation

Xie, Y., Fang, Z., Qiu, X., Tsang, P. K. E., & Liang, B. (2014). Comparisons of the reactivity, reusability and stability of four different zero-valent iron-based nanoparticles. Chemosphere, 108, 433-436.

Keywords

  • Stability
  • Nano zero-valent iron
  • Modify
  • Reusability

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