| Literature DB >> 35489459 |
Simranjeet Singh1, T S Sunil Kumar Naik2, Amith G Anil2, Sutripto Khasnabis2, Bidisha Nath3, Basavaraju U2, Vineet Kumar4, V K Garg5, S Subramanian2, Joginder Singh6, Praveen C Ramamurthy7.
Abstract
A novel green nanocomposite has been prepared by immobilizing CaO nanoparticles (CaO NPs) on the surface of graphene oxide. Biogenic CaO-NPs were synthesized from Lala clamshells. Morphological and structural characterizations of the nanocomposite were studied extensively. The adsorption capacity (qmax) of the nanocomposite for removing Cr(VI) was 38.04 mg g-1. In addition to this, the adsorption data were adequately simulated with Langmuir, Freundlich, Temkin, and pseudo-second-order models, suggesting that the adsorption process was the combination of external mass transfer and chemisorption. Electrostatic interaction was the dominant mechanism for Cr(VI) removal. In addition, the synthesized nanocomposites also serve as an excellent sensor for Cr(VI) sensing, with a limit of detection (LOD) of 0.02 μM utilizing electrochemical methods. Therefore, this green nanocomposite can simultaneously serve as an adsorbent and sensor for Cr(VI)removal from aqueous solutions.Entities:
Keywords: Adsorption; CaO NP's; Graphene oxide; Kinetics; Lala clamshell; Sensing
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Year: 2022 PMID： 35489459 DOI： 10.1016/j.chemosphere.2022.134714
Source DB: PubMed Journal: Chemosphere ISSN： 0045-6535 Impact factor: 7.086