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Interaction mechanism of uranium(VI) with three-dimensional graphene oxide-chitosan composite: Insights from batch experiments, IR, XPS, and EXAFS spectroscopy

文献类型：期刊论文

;
作者Huang, ZW; Li, ZJ; Zheng, LR; Zhou, LM; Chai, ZF; Wang, XL; Shi, WQ; Zheng LR(郑黎荣)
刊名CHEMICAL ENGINEERING JOURNAL ; CHEMICAL ENGINEERING JOURNAL
出版日期2017 ; 2017
卷号328页码:1066-1074
关键词Graphene-based macrostructures Graphene-based macrostructures Chitosan Uranium Adsorption Extended X-ray absorption fine structure spectroscopy (EXAFS) Chitosan Uranium Adsorption Extended X-ray absorption fine structure spectroscopy (EXAFS)
ISSN号1385-8947 ; 1385-8947
DOI10.1016/j.cej.2017.07.067 ; 10.1016/j.cej.2017.07.067
文献子类Article ; Article
英文摘要Aiming at the efficient and convenient treatment of radioactive wastewater, a graphene oxide-chitosan aerogel (GO-CS) was fabricated and utilized for uranium(VI) elimination. The adsorption of U(VI) on the aerogel was evaluated as a function of contact time, solution pH, ionic strength, initial uranium concentration, and competing metal ions. High adsorption capacity for the uranium could be achieved over a wide pH range, e.g., 200, 319.9, and 384.6 mg/g at pH 3.5, 5.0, and 8.3, respectively. The interaction mechanism of U(VI) with GO-CS was systematically clarified by using Fourier transformation infrared (FT-IR), X-ray photoelectron spectroscopy (XPS), and extended X-ray absorption fine structure spectroscopy (EXAFS). It was found that the U(VI) adsorption was mainly ascribed to the inner-sphere surface complexation by -COO , -OH, and -NH2 groups anchored on the GO-CS and the involvement of these functional groups toward the coordination sphere was largely relevant to solution pH. At mild alkaline pH, -NH2 groups play a more important role, therefore leading to an extraordinarily high extraction of uranium from simulated seawater. (C) 2017 Elsevier B.V. All rights reserved.; Aiming at the efficient and convenient treatment of radioactive wastewater, a graphene oxide-chitosan aerogel (GO-CS) was fabricated and utilized for uranium(VI) elimination. The adsorption of U(VI) on the aerogel was evaluated as a function of contact time, solution pH, ionic strength, initial uranium concentration, and competing metal ions. High adsorption capacity for the uranium could be achieved over a wide pH range, e.g., 200, 319.9, and 384.6 mg/g at pH 3.5, 5.0, and 8.3, respectively. The interaction mechanism of U(VI) with GO-CS was systematically clarified by using Fourier transformation infrared (FT-IR), X-ray photoelectron spectroscopy (XPS), and extended X-ray absorption fine structure spectroscopy (EXAFS). It was found that the U(VI) adsorption was mainly ascribed to the inner-sphere surface complexation by -COO , -OH, and -NH2 groups anchored on the GO-CS and the involvement of these functional groups toward the coordination sphere was largely relevant to solution pH. At mild alkaline pH, -NH2 groups play a more important role, therefore leading to an extraordinarily high extraction of uranium from simulated seawater. (C) 2017 Elsevier B.V. All rights reserved.
电子版国际标准刊号1873-3212 ; 1873-3212
WOS关键词AQUEOUS-SOLUTIONS ; AQUEOUS-SOLUTIONS ; METAL-IONS ; PHYSICOCHEMICAL PARAMETERS ; THEORETICAL CALCULATIONS ; EFFICIENT ENRICHMENT ; WATER-PURIFICATION ; URANYL IONS ; ADSORPTION ; U(VI) ; SORPTION ; METAL-IONS ; PHYSICOCHEMICAL PARAMETERS ; THEORETICAL CALCULATIONS ; EFFICIENT ENRICHMENT ; WATER-PURIFICATION ; URANYL IONS ; ADSORPTION ; U(VI) ; SORPTION
WOS研究方向Engineering ; Engineering
语种英语 ; 英语
WOS记录号WOS:000411118300103 ; WOS:000411118300103
源URL[http://ir.ihep.ac.cn/handle/311005/285275]  
专题高能物理研究所_多学科研究中心
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714		 Huang, ZW,Li, ZJ,Zheng, LR,et al. Interaction mechanism of uranium(VI) with three-dimensional graphene oxide-chitosan composite: Insights from batch experiments, IR, XPS, and EXAFS spectroscopy, Interaction mechanism of uranium(VI) with three-dimensional graphene oxide-chitosan composite: Insights from batch experiments, IR, XPS, and EXAFS spectroscopy[J]. CHEMICAL ENGINEERING JOURNAL, CHEMICAL ENGINEERING JOURNAL,2017, 2017,328, 328:1066-1074, 1066-1074.
APA Huang, ZW.,Li, ZJ.,Zheng, LR.,Zhou, LM.,Chai, ZF.,...&郑黎荣.(2017).Interaction mechanism of uranium(VI) with three-dimensional graphene oxide-chitosan composite: Insights from batch experiments, IR, XPS, and EXAFS spectroscopy.CHEMICAL ENGINEERING JOURNAL,328,1066-1074.
MLA Huang, ZW,et al."Interaction mechanism of uranium(VI) with three-dimensional graphene oxide-chitosan composite: Insights from batch experiments, IR, XPS, and EXAFS spectroscopy".CHEMICAL ENGINEERING JOURNAL 328(2017):1066-1074.

入库方式： OAI收割

来源：高能物理研究所

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