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题名:
Macroscopic and spectroscopic insights into the mutual interaction of graphene oxide, Cu(II), and Mg/Al layered double hydroxides
作者: Hu, BW; Huang, CC; Li, X; Sheng, GD; Li, H; Ren, XM; Ma, JY; Wang, J; Huang, YY
刊名: CHEMICAL ENGINEERING JOURNAL
出版日期: 2017
卷号: 313, 页码:527-534
关键词: Graphene oxide ; Layered double hydroxides ; Cu(II) ; Mutual interaction
DOI: 10.1016/j.cej.2016.12.102
文章类型: 期刊论文
英文摘要: 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.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000394723200053
ISSN号: 1385-8947
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/27369
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
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,2017-01-01,313:527-534.
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