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Nano tin ferrous oxide decorated graphene oxide sheets for efficient arsenic (III) removal

Sharma, M and Ramakrishnan, S and Remanan, S and Madras, G and Bose, S (2018) Nano tin ferrous oxide decorated graphene oxide sheets for efficient arsenic (III) removal. In: Nano-Structures and Nano-Objects, 13 . pp. 82-92.

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Official URL: https://doi.org/10.1016/j.nanoso.2017.12.007


Nano-sized tin ferrous oxide (Sn0.95Fe0.05O2 −δ) decorated graphene oxide (GO) based adsorbents were synthesized by solution combustion technique. The synthesized adsorbents were thoroughly characterized by SEM, XRD, XPS, TGA, and BET with respect to their structure, morphology and specific surface area. A four-fold increase in the sorption capacity was realized in Sn0.95Fe0.05O2 −δ decorated GO sheets compared to individual GO and nano tin ferrous oxide. The adsorption kinetics followed the pseudo-second-order model and the isotherm followed Langmuir equilibrium. The equilibrium isotherm showed that Sn0.95Fe0.05O2 −δ decorated GO nanoparticles had higher sorption capacity (qm=105 mg g−1) compared to both Sn0.95Fe0.05O2 −δ (qm=27 mg g−1) and GO (qm=23 mg g−1) indicating excellent synergism. The continuous adsorption of As (III) in a column was also conducted to investigate its feasibility for large-scale operations.

Item Type: Journal Article
Publication: Nano-Structures and Nano-Objects
Publisher: Elsevier B.V.
Additional Information: The copyright for this article belongs to the Elsevier B.V.
Keywords: Adsorption; Arsenic; Remediation; Solution combustion
Department/Centre: Division of Mechanical Sciences > Chemical Engineering
Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited: 16 Aug 2022 06:17
Last Modified: 16 Aug 2022 06:17
URI: https://eprints.iisc.ac.in/id/eprint/75677

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