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Functionalized Cu-based metal oxide nanoparticles with enhanced Cd+2 adsorption capacity and their ecotoxicity assessment by molecular docking.
Kumar K, Anil; Yeshwanth, M; Kumar B, Kusum; Panwar, Jitendra; Gupta, Suresh.
Afiliação
  • Kumar K A; Department of Chemical Engineering, Birla Institute of Technology and Science, Pilani, 333 031, India.
  • Yeshwanth M; Department of Biotechnology, Siddaganga Institute of Technology, Tumkur, 572103, India.
  • Kumar B K; Department of Chemical Engineering, Birla Institute of Technology and Science, Pilani, 333 031, India.
  • Panwar J; Department of Biological Sciences, Birla Institute of Technology and Science, Pilani, 333 031, India.
  • Gupta S; Department of Chemical Engineering, Birla Institute of Technology and Science, Pilani, 333 031, India. Electronic address: sureshg@pilani.bits-pilani.ac.in.
J Environ Manage ; 307: 114523, 2022 Apr 01.
Article em En | MEDLINE | ID: mdl-35065379
ABSTRACT
In the present study, synthesis of eco-friendly Cu-based metal oxides nanoparticles [CuO, Cu2O, and CuO&Cu2O nanoparticles (NPs)] without and with functionalization with Diethylene glycol (DEG) has been demonstrated. The synthesized NPs were screened for their ability to adsorb multiple heavy metal ions from an aqueous solution. Based on the maximum Cadmium (Cd+2) ion adsorption capacity, functionalized Cu2O (fCu2O) NPs were selected for the detailed characterization and batch studies. The average size of fCu2O NPs was found to be 57.4 ± 6.14 nm in comparison to NPs without capping (72.6 ± 5.19 nm). The experimental parameters viz. contact time, initial pH, and initial concentration were optimized, and the obtained results were interpreted using standard isotherms and kinetic models. The maximum Cd+2 adsorption on fCu2O NPs was observed at initial solution pH 7. The adsorption of Cd+2 was found to be decreased at acidic pH due to the protonation of functional groups present on the NPs surface. A maximum Cd+2 adsorption capacity of 204 ± 6.2 mg g-1 was obtained from the Langmuir adsorption isotherm. The crystal structure of NPs was prepared and docked with the protein targets of selected soil microbes in order to determine their ecotoxicity. The obtained results showed that NPs exhibited low affinity towards protein targets in comparison to the standard used. It suggests that NPs have less impact on the functionality of soil microbes and are thus safe for their disposal into the soil micro-environment.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Nanopartículas Metálicas Idioma: En Ano de publicação: 2022 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Nanopartículas Metálicas Idioma: En Ano de publicação: 2022 Tipo de documento: Article