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- W2017143670 abstract "Abstract Polyhedral cuprous oxide nanoparticles (Cu2O NPs) with rough surfaces were prepared by a one-pot sonochemical precipitation method. The products were characterized by SEM, XRD, EDS, XPS, and UV–Vis DRS, respectively. The adsorption behavior of Congo red (CR) from aqueous solution onto the as-prepared Cu2O NPs was systematically investigated. The equilibrium and kinetic studies suggested that the adsorption process followed Freundlich isotherm and pseudo-second order model, respectively. The as-prepared Cu2O NPs exhibited remarkable adsorption properties toward CR. The maximum adsorption capacity at 20 °C was 3904 mg g−1, which was the highest reported value so far in adsorption removal of CR. Together with the evaluation of the thermodynamic parameters such as Gibbs free energy, enthalpy and entropy change, our results show that the adsorption of CR onto Cu2O is a spontaneous, endothermic and chemisorption process. A putative interaction model between CR and Cu2O NPs was proposed. Moreover, the Cu2O adsorbent could be photocatalytically regenerated and reused without significant loss of its adsorption capability." @default.
- W2017143670 created "2016-06-24" @default.
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- W2017143670 date "2015-06-01" @default.
- W2017143670 modified "2023-10-17" @default.
- W2017143670 title "Adsorption removal of Congo red from aqueous solution by polyhedral Cu2O nanoparticles: Kinetics, isotherms, thermodynamics and mechanism analysis" @default.
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- W2017143670 doi "https://doi.org/10.1016/j.jallcom.2015.02.048" @default.
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