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. 2019 Aug 3;9(8):1123. doi: 10.3390/nano9081123

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

(a) Scheme of the As⁵⁺ removal from water by using Fe₂O₃/rGO hybrids as the filter. (b) Relations between bed volume and remaining effluent As⁵⁺ in wastewater. Reproduced from [164], with permission from Elsevier, 2014.