Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/123419
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Type: Journal article
Title: Mineralisation and release of 14C-graphene oxide (GO) in soils
Author: Navarro, D.
Kah, M.
Losic, D.
Kookana, R.
McLaughlin, M.
Citation: Chemosphere, 2020; 238:124558
Publisher: Elsevier
Issue Date: 2020
ISSN: 0045-6535
1879-1298
Statement of
Responsibility: 
Divina A. Navarro, Mélanie Kah, Dusan Losic, Rai S. Kookana, Mike J. McLaughlin
Abstract: Graphene-based nanomaterials (GNMs) have been touted as miracle materials due to their extraordinary properties that can benefit many industries, including in agriculture and for environmental remediation. While improvement in nutrient delivery and the ability to adsorb environmental contaminants have been demonstrated, what happens to GNMs in soil is a question that has not been addressed. The main aim of this study was to investigate their degradation in soil to have a better understanding of their environmental fate. Using radioisotope techniques, this study assessed the potential mineralisation and release of graphene oxide (GO), one of the most commonly used forms of graphene. Results revealed that the conversion of GO to carbon dioxide was negligible (<2%) in microbially-active soils. GO remaining in soil was also not readily released by water extractions. The lack of mineralisation and release is indicative of GO's high (bio)degradation stability which is likely due to its limited availability resulting from its rapid homo/hetero-aggregation. Over-all, the results provide new and important information on the environmental fate of graphene nanomaterials applied to soils.
Keywords: Environment; Fate; Graphene oxide; Mineralisation; Nanomaterials; Soil
Rights: © 2019 Published by Elsevier Ltd. All rights reserved.
RMID: 0030133664
DOI: 10.1016/j.chemosphere.2019.124558
Grant ID: http://purl.org/au-research/grants/arc/DP150101760
http://purl.org/au-research/grants/arc/IH150100003
Appears in Collections:Agriculture, Food and Wine publications

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