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- W3007267558 endingPage "116332" @default.
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- W3007267558 abstract "A new composite electrode with porous interconnected nano-dendritic structures was prepared by electrochemical co-deposition of graphene oxide and polypyrrole (GO-PPy) on a copper-nickel foam (CNF) substrate, and used for the electrosorption of Rhodamine B (RhB). The physical properties of the electrode were systematically characterized by a scanning electron microscope (equipped with energy-dispersive X-ray), X-ray diffraction, X-ray photoelectron spectroscopy and nitrogen adsorption/desorption. The operating conditions for electrosorption, i.e. electrolyte concentrations, applied potentials and pH, were investigated. The experimental data were fitted by Langmuir and Freundlich isotherms. Meanwhile, pseudo-first-order, pseudo-second-order and intra-particle pore diffusion models were used to investigate the adsorption kinetics. The results indicated that the electrosorption of RhB fitted Langmuir isotherm with qm = 416.7 mg/g and followed pseudo-second order kinetics. The adsorption capacity and adsorption rate of RhB on the [email protected] electrode (270.3 mg/g and 3.762 mg/(g min)) were significantly higher than those on the CNF electrode (98.04 mg/g and 0.6614 mg/(g min)). This improved electrosorption of RhB on the composite electrode might be attributed to its porous interconnected nano-dendritic structure, which could provide more adsorption sites and abundant functional groups of GO-PPy. This work provided an environmentally friendly and economical technology for the RhB removal." @default.
- W3007267558 created "2020-03-06" @default.
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- W3007267558 date "2020-04-01" @default.
- W3007267558 modified "2023-10-17" @default.
- W3007267558 title "Enhanced electrosorption of rhodamine B over porous copper-nickel foam electrodes modified with graphene oxide/polypyrrole" @default.
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- W3007267558 doi "https://doi.org/10.1016/j.synthmet.2020.116332" @default.
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