Macroscopic and spectroscopic insights into the mutual interaction of graphene oxide, Cu(II), and Mg/Al layered double hydroxides
Hu, BW; Huang, CC; Li, X; Sheng, GD; Li, H; Ren, XM; Ma, JY; Wang, J; Huang, YY
2017
发表期刊CHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
卷号313页码:527-534
文章类型期刊论文
摘要The environmental behavior and impact of graphene oxide (GO) has recently received considerable attention due to its rapid production and wide applications, and thus its inevitable release into the natural ecosystem, wherein heavy metals and mineral particles are generally co-existed. This work was firstly aimed to identify the mutual effect of Cu(II) and GO interaction with Mg/Al layered double hydroxides (LDH). The results demonstrate that Cu(II) and GO exhibited interactively enhancement roles in their co-adsorption on LDH. Namely, enhanced co-adsorption of GO with Cu(II) was mainly ascribed from formation of "LDH-Cu(II)-GO" ternary surface complexes via cation-in interaction. Meanwhile, increased co adsorption of Cu(II) with GO was primarily derived from formation of "LDH-GO-Cu(II)" ternary surface complexes through interaction of Cu(II) with O-bearing groups on adsorbed GO (i.e., GO-bridging). EXAFS analysis indicates that GO could significantly inhibit formation of outer-sphere complexes for Cu(II) at low pH, while suppress formation of surface precipitates at high pH. Increased uptake of GO and Cu(II) on minerals as they co-exist may decrease their mobility. These new insights provide additional details to be considered concerning the fate and risk of GO in real ecosystem, as well as the natural purification of metals in ecological environments. (C) 2016 Elsevier B.V. All rights reserved.
关键词Graphene Oxide Layered Double Hydroxides Cu(Ii) Mutual Interaction
DOI10.1016/j.cej.2016.12.102
收录类别SCI
语种英语
WOS记录号WOS:000394723200053
引用统计
被引频次:27[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/27369
专题中科院上海应用物理研究所2011-2018年
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Hu, BW,Huang, CC,Li, X,et al. Macroscopic and spectroscopic insights into the mutual interaction of graphene oxide, Cu(II), and Mg/Al layered double hydroxides[J]. CHEMICAL ENGINEERING JOURNAL,2017,313:527-534.
APA Hu, BW.,Huang, CC.,Li, X.,Sheng, GD.,Li, H.,...&Huang, YY.(2017).Macroscopic and spectroscopic insights into the mutual interaction of graphene oxide, Cu(II), and Mg/Al layered double hydroxides.CHEMICAL ENGINEERING JOURNAL,313,527-534.
MLA Hu, BW,et al."Macroscopic and spectroscopic insights into the mutual interaction of graphene oxide, Cu(II), and Mg/Al layered double hydroxides".CHEMICAL ENGINEERING JOURNAL 313(2017):527-534.
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