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- W4291711310 abstract "Fully conjugated organic polymer will be of great potential in removing uranium because of its superiority of structural designability, super stability and electron-rich property. Herein, a new pompon like fully-conjugated organic polymer (named as P-B) was synthesized by knoevenagel condensation using benzene-1,3,5-tricarboxal-dehyde (B) and p-xylylene dicyanide (P) as the building units which was a kind of n-type semiconductor being able to adsorb and detoxify U(VI). The micromorphology, physical properties, chemical structure, photoelectric performance and adsorption properties were characterized. The results showed that P-B was of three dimentional mesoporous microsphere rich in -CN with its maximum uranium adsorption being at 359 mg g−1. The adsorption kinetics conformed to the pseudo-second-order kinetic process, which indicated that chemical adsorption would be the main uranium capturing mechanism. Furthermore, the band gap of P-B manifested narrow with its conduction band (ECB) being of − 1.24 V which was more negative than the reduction potential of UO22+ to UO2 (0.411 V) which endowed P-B with a certain reduction capacity of uranium. XPS results disclosed the formation of U(Ⅳ), indicating the reduction of U(Ⅵ) actually occurred during the uranium capturing. In brief, the fully conjugated structure of P-B with -CN being contained endowed it strong coordination ability with uranium and favorable reduction ability. Therefore, P-B would be of great potential in capturing uranium in nuclear waste treatment." @default.
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- W4291711310 date "2022-11-01" @default.
- W4291711310 modified "2023-10-04" @default.
- W4291711310 title "Synthesis of a pompon like fully-conjugated organic polymer for highly selective uranium removal" @default.
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- W4291711310 doi "https://doi.org/10.1016/j.colsurfa.2022.129952" @default.
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