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- W2033508504 abstract "A novel silica gel phase [Si–NH2–VB4] is synthesized by a direct immobilization of Vitamin B4 (VB4), as an eco-friendly modification of a silica-amine phase [Si–NH2]. The resulting modified silica amine phase [Si–NH2–VB4] with VB4 showed a bi-character for selective extraction of both cation and anion species from aqueous media. Surface coverage value, thermal stability, structure identification and confirmation, as well as interaction properties, were determined using thermal desorption method, thermal degradation analysis by TGA and FT-IR. The adsorption study showed that [Si–NH2–VB4] has a good affinity for binding and extracting toxic oxyanions including chromate, arsenate and arsenite via the incorporated anion exchange character. [Si–NH2–VB4] also showed a tendency to have high selectivity towards extraction of Hg(II) ions from aqueous solutions in a wide range of pH-values due to different possible binding sites. Other metal ions, such as Cu(II) and Cd(II), were highly extracted at high pH-values due to a single site of interaction. Based on environmental water samples, the potential application of [Si–NH2–VB4] is for selective extraction of Hg(II) from aqueous media under a wide range of pH conditions." @default.
- W2033508504 created "2016-06-24" @default.
- W2033508504 creator A5027067001 @default.
- W2033508504 creator A5056519056 @default.
- W2033508504 date "2011-08-01" @default.
- W2033508504 modified "2023-10-04" @default.
- W2033508504 title "Selective extraction of toxic heavy metal oxyanions and cations by a novel silica gel phase functionalized by vitamin B4" @default.
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- W2033508504 doi "https://doi.org/10.1016/j.cej.2011.05.086" @default.
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