PlumX Metrics
Embed PlumX Metrics

Promoting aqueous and transport characteristics of highly reactive nanoscale zero valent iron via different layered hydroxide coatings

Applied Surface Science, ISSN: 0169-4332, Vol: 506, Page: 145018
2020
  • 75
    Citations
  • 0
    Usage
  • 30
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    75
    • Citation Indexes
      75
  • Captures
    30

Article Description

In this study, nanoscale zero valent iron (Fe 0 ) was coated with different layered hydroxide coatings (Mg/Al/Ca(OH) N ) to enhance its suspension stability in aqueous solution and transportability within the porous media. Morphological characteristics, crystallinity and surface elemental composition of the synthesized bare (Fe 0 ) and coated (C-Fe 0 ) were investigated using TEM, XRD and SEM-EDS analyses respectively. Suspension stability of Fe 0 and C-Fe 0 suspensions with different [Mg or Al or Ca/Fe: 0.2–1.0 wt/wt] coating ratios was investigated through several sets of 180 min settlement experiments. Moreover, packed-column experiments were conducted to evaluate the mobility of the prepared materials through porous media. Settlement results were highly consistent with mobility investigation, where C-Fe 0 [Mg/Fe] 1.0 showed the best performance in both with around 88% relative suspension efficiency and 93% penetration efficiency (5 times higher than Fe 0 ). A reciprocal relation was found between particle size, crystallinity and reactivity of the C-Fe 0, where the finest sizes exhibited higher crystallinity and better removal of the two targeted nutrients. Furthermore, the progressive dissolution of the Mg(OH) 2 shell compared with the other coating materials resulted in its superior prolonged reactivity. The presented C-Fe 0 could be promising towards enhanced performance of the reactive nanoparticles in the real water treatment applications.

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know