Efficient Preparation of Bone Carbon Film With Selective Sorption of Aquatic U(vi) by Roll-to-Roll Printing Method

The highly soluble oxidation state of uranium (U (VI)) in an aqueous solution is the most dangerous, as it easily migrates into the geological environment. Similar to the accumulation of heavy metals, uranium U(VI) can also accumulate through the food chain, causing harmful diseases, including damage to the kidneys, liver and lungs, muscles, and even cancer or death. In our previous research, we found that the submicron fiber/ball ground bone charcoal (CL/MB) film prepared by electrospinning technology can be well dispersed in electrospinning solvent. CL/MB membrane can adsorb U(VI) efficiently, and has good selectivity to the interference of coexisting ions in simulated water. In this study, the bone carbon obtained from the pyrolysis of animal bone residues at 350 ℃, 500 ℃ and 650 ℃ was prepared into alcohol-based bone carbon ink by adding surfactants and dispersed anti-settling agents. By roll-to-roll printing, alcohol-based bone carbon ink is printed onto polyethylene terephthalate(PET) substrate to form bone carbon film (BCF). In simulated seawater, bivalent cations especially Ba2+, have a greater effect on BCF with selective sorption of aquatic U(VI) reaches (81.4±1.6)%. CO32- and SO42- can interact with U(VI) in water, resulting in significant leads to their significant reduction leads to their significant reduction: decreased by (70.5±2.4)%; SO42- decreased by (62.4±4.8)%). This study paves the way for the feasible application of roll-to-roll industrial efficient production of of BCF with selective sorption of aquatic U(VI) (laboratory printing speed 5-8m/min, film width ≤600mm). For citation: Junjun Li, Lingtao Sun, Xiaolong Jing, Rong Jin, Cherkasova T.G., Lu Li Efficient preparation of bone carbon film with selective sorption of aquatic u(vi) by roll-to-roll printing method. ChemChemTech [Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol.]. 2025. V. 68. N 10. P. 124-129. DOI: 10.6060/ivkkt.20256810.7185.