Analytical characterisation of nanoscale zero-valent iron: A methodological review

L Chekli; B Bayatsarmadi; Ryo Sekine; B Sarkar; A M Shen; K G Scheckel; W Skinner; R Naidu; H K Shon; E Lombi; E Donner

doi:10.1016/j.aca.2015.10.040

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Analytical characterisation of nanoscale zero-valent iron: A methodological review

Journal article

Peer reviewed

Analytical characterisation of nanoscale zero-valent iron: A methodological review

L Chekli, B Bayatsarmadi, Ryo Sekine, B Sarkar, A M Shen, K G Scheckel, W Skinner, R Naidu, H K Shon, E Lombi, …

Analytica Chimica Acta, Vol.903, pp.13-35

2016

DOI: https://doi.org/10.1016/j.aca.2015.10.040

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Abstract

zero-valent iron nanoparticles

characterization techniques

particle size

surface chemistry

bulk composition

groundwater remediation

Zero-valent iron nanoparticles (nZVI) have been widely tested as they are showing significant promise for environmental remediation. However, many recent studies have demonstrated that their mobility and reactivity in subsurface environments are significantly affected by their tendency to aggregate. Both the mobility and reactivity of nZVI mainly depends on properties such as particle size, surface chemistry and bulk composition. In order to ensure efficient remediation, it is crucial to accurately assess and understand the implications of these properties before deploying these materials into contaminated environments. Many analytical techniques are now available to determine these parameters and this paper provides a critical review of their usefulness and limitations for nZVI characterisation. These analytical techniques include microscopy and light scattering techniques for the determination of particle size, size distribution and aggregation state, and X-ray techniques for the characterisation of surface chemistry and bulk composition. Example characterisation data derived from commercial nZVI materials is used to further illustrate method strengths and limitations. Finally, some important challenges with respect to the characterisation of nZVI in groundwater samples are discussed.

Details

Title: Analytical characterisation of nanoscale zero-valent iron: A methodological review
Authors: L Chekli (Author) - University of Technology Sydney
B Bayatsarmadi (Author) - CRC Care
Ryo Sekine (Author) - University of South Australia
B Sarkar (Author) - University of South Australia
A M Shen (Author) - University of South Australia
K G Scheckel (Author) - U.S. Environmental Protection Agency, United States
W Skinner (Author) - University of South Australia
R Naidu (Author) - University of South Australia
H K Shon (Author) - University of South Australia
E Lombi (Author) - University of South Australia
E Donner (Author) - University of South Australia
Publication details: Analytica Chimica Acta, Vol.903, pp.13-35
Publisher: Elsevier BV
Date published: 2016
DOI: 10.1016/j.aca.2015.10.040
ISSN: 0003-2670; 0003-2670
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
Language: English
Record Identifier: 99451417502621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Chemistry, Analytical

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