Preparation of chemically oxidized porous carbon and its adsorption of uranium(VI) from aqueous solution

Adsorption capacity of kelp-like electrospun nanofibers immobilized with bayberry tannin for uranium(vi) extraction from seawater

“…The peaks of GPNB-BT at 3445, 2918, 1354, and 1042 cm À1 were assigned to the stretching vibration of N-H and/or O-H, CH 2 , C-N, and C-O, respectively. 42 The peaks at 1047.5 cm À1 of the FTIR spectra were assigned to C-O-C stretching in methoxyl groups of BT, 43 which can be found at 1048.1 cm À1 in the FTIR spectra of GPNB-BT. Meanwhile, the characteristic absorption bands appearing at 608.1 cm À1 belonged to the out-of-plane bending vibration of C-H on the aromatic rings of BT, which can also be seen at 605.8 cm À1 in the FTIR spectra of GTNB-BT.…”

Theoretical and experimental investigations of enhanced uranium(vi) adsorption using a nitrogen doping strategy

“…From the above analysis, it is apparent that nitrogen doping significantly improved the U(VI) adsorption performance of the PAO-rGO in acidic solutions, in agreement with previous reports. [59][60][61]…”

Dual Effect of Acetic Acid Efficiently Enhances Sludge-Based Biochar to Recover Uranium From Aqueous Solution

“…( Kataria and Garg, 2018 ) Biochar ( Sun et al, 2013 ; Sun et al, 2017 ; Kong et al, 2020 ), graphene ( Zhao et al, 2019 ), calixarene ( Fang-Zhu et al, 2019 ), MOFs ( Li et al, 2020 ), and mesoporous silicon ( Jiang et al, 2020 ) were used as sorption materials. Among them, biochar has been verified as an important sorption material for uranium recovery or removal from aqueous solution ( Jin et al, 2018 ; Li et al, 2019a ), due to its simple preparation process, lower price, higher temperature resistance, radiation resistance, higher stability to almost all kinds of acidic and alkali environments, nontoxic, and environmentally friendly nature ( Zhao et al, 2017 ; Pu et al, 2019 ).…”