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- W3144070924 abstract "In this study, a new adsorbent, polyvinyl alcohol (PVA) and graphene oxide (GO), was prepared, characterized and used for the removal of Sr2+ from aqueous solution. In PVA/GO composite, the inter-lamellar spacing of adjacent GO layers was dramatically enlarged due to the intercalation of PVA molecules, such a unique architecture significantly mitigated the aggregation of GO layers, which facilitated the accessible exposure of active sites and the mass transfer of strontium ions (Sr2+), thus enhancing the adsorption capacity toward Sr2+. The adsorption of Sr2+ by PVA/GO composite conformed to the pseudo second-order kinetic model (R2 = 0.9994), the Langmuir model (R2 = 0.9042), and the Freundlich model (R2 = 0.9598). The complexation interaction between Sr2+ and oxygen atoms/π-electron domain of PVA/GO composite was primarily responsible for the adsorption mechanism, based on the characterization results of X-ray photoelectron spectroscopy (XPS), scanning electron microscope equipped with energy dispersion spectroscopy (SEM-EDS) and powder X-ray diffraction (PXRD)." @default.
- W3144070924 created "2021-04-13" @default.
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- W3144070924 date "2021-09-01" @default.
- W3144070924 modified "2023-09-27" @default.
- W3144070924 title "Adsorptive removal of Sr(II) from aqueous solution by polyvinyl alcohol/graphene oxide aerogel" @default.
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- W3144070924 doi "https://doi.org/10.1016/j.chemosphere.2021.130492" @default.
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