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Issue 59, 2021
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Combined antioxidant capped and surface supported redox-sensitive nanoparticles for continuous elimination of multi-metallic species

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Abstract

A strategic modification involving (i) a multi-functional almond shell biochar surface support and (ii) capping with almond skin extracted antioxidants was performed to preserve redox-sensitive Fe0 nanoparticles (NPs). pXRD data showed generation of an iron-carbonyl shell on the supported Fe0 NPs (SA-Fe0), justifying successful antioxidant capping. The total metal removal capacity of 695 mg g−1i.e. AsO2 (300.2 mg g−1) > Cd2+ (224.2 mg g−1) > CrO42− (125.2 mg g−1) > Ni2+ (44.5 mg g−1) in batch mode, and 102 mg g−1 in continuous column setup confirms the excellent reactivity of the SA-Fe0 nanocomposite. Loss of the iron-carbonyl shell and iron oxidation during interaction with contaminants confirm no hindrance in electron transfer due to antioxidant capping.

Graphical abstract: Combined antioxidant capped and surface supported redox-sensitive nanoparticles for continuous elimination of multi-metallic species

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Supplementary files

Article information


Submitted
05 Jun 2021
Accepted
13 Jun 2021
First published
14 Jun 2021

Chem. Commun., 2021,57, 7280-7283
Article type
Communication

Combined antioxidant capped and surface supported redox-sensitive nanoparticles for continuous elimination of multi-metallic species

N. Khandelwal and G. K. Darbha, Chem. Commun., 2021, 57, 7280 DOI: 10.1039/D1CC02972J

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