PMID- 31100560 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20190723 IS - 1873-3336 (Electronic) IS - 0304-3894 (Linking) VI - 375 DP - 2019 Aug 5 TI - Nano-sized architectural design of multi-activity graphene oxide (GO) by chemical post-decoration for efficient uranium(VI) extraction. PG - 320-329 LID - S0304-3894(19)30531-X [pii] LID - 10.1016/j.jhazmat.2019.05.005 [doi] AB - The introduction of organic groups onto graphene oxide (GO) platelets can supply additional active sites for adsorption of uranium(VI) (U(VI)) to improve the adsorption capacity. However, as a result of the existence of stabilizing pi-conjugation system, a facile and effective modification method remains a challenge. Therefore, a novel strategy is exploited by nano-sized architectural design of multi-activity GO through post-decoration with amidoxime functionalized diaminomaleonitrile (DM-AO). The post-modification of DM-AO successfully activated the inert sites in GO platelets. Meanwhile, the amidoxime group in DM-AO can improve the adsorption selectivity. Adsorption amount of U(VI) on the as prepared GO-DM-AO reached at 935 mg g(-1), which is increased by 209% increment compared with that of pristine GO at the same concentration. The adsorption efficiency of GO-DM-AO is greatly improved, and the time to reach the adsorption equilibrium is half of that of GO. Excitingly, the excellent removal efficiency could still maintained even after 5 cycles of adsorption-desorption. The outstanding adsorption amount, short adsorption equilibrium time, and excellent removal efficiency can provide a theoretical guidance for further immobilization of U(VI) from seawater. CI - Copyright (c) 2019 Elsevier B.V. All rights reserved. FAU - Yang, Peipei AU - Yang P AD - Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China; College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China. FAU - Zhang, Hongsen AU - Zhang H AD - Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China; College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China. FAU - Liu, Qi AU - Liu Q AD - Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China; College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China. FAU - Liu, Jingyuan AU - Liu J AD - Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China; College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China. FAU - Chen, Rongrong AU - Chen R AD - Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China; College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China. FAU - Yu, Jing AU - Yu J AD - Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China; College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China. FAU - Hou, Jindi AU - Hou J AD - College of Science, Harbin Engineering University, 150001, PR China. FAU - Bai, Xuefeng AU - Bai X AD - College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China. FAU - Wang, Jun AU - Wang J AD - Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China; College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China; Institute of Advanced Marine Materials, Harbin Engineering University, 150001, PR China. Electronic address: zhqw1888@sohu.com. LA - eng PT - Journal Article DEP - 20190503 PL - Netherlands TA - J Hazard Mater JT - Journal of hazardous materials JID - 9422688 OTO - NOTNLM OT - Amidoxime functionalized OT - Graphene oxide OT - Nano-sized architectural OT - Uranium adsorption EDAT- 2019/05/18 06:00 MHDA- 2019/05/18 06:01 CRDT- 2019/05/18 06:00 PHST- 2019/02/14 00:00 [received] PHST- 2019/04/18 00:00 [revised] PHST- 2019/05/02 00:00 [accepted] PHST- 2019/05/18 06:00 [pubmed] PHST- 2019/05/18 06:01 [medline] PHST- 2019/05/18 06:00 [entrez] AID - S0304-3894(19)30531-X [pii] AID - 10.1016/j.jhazmat.2019.05.005 [doi] PST - ppublish SO - J Hazard Mater. 2019 Aug 5;375:320-329. doi: 10.1016/j.jhazmat.2019.05.005. Epub 2019 May 3.