Adsorption and co-adsorption of graphene oxide and Ni(II) on iron oxides: A spectroscopic and microscopic investigation
Sheng, GD; Huang, CC; Chen, GH; Sheng, J; Ren, XM; Hu, BW; Ma, JY; Wang, XK; Huang, YY; Alsaedi, A; Hayat, T
2018
发表期刊ENVIRONMENTAL POLLUTION
ISSN0269-7491
卷号233页码:125-131
文章类型期刊论文
摘要Graphene oxide (GO) may strongly interact with toxic metal ions and mineral particles upon release into the soil environment. We evaluated the mutual effects between GO and Ni (Ni(II)) with regard to their adsorption and co-adsorption on two minerals (goethite and hematite) in aqueous phase. Results indicated that GO and Ni could mutually facilitate the adsorption of each other on both goethite and hematite over a wide pH range. Addition of Ni promoted GO co-adsorption mainly due to the increased positive charge of minerals and cation it interactions, while the presence of GO enhanced Ni co-adsorption predominantly due to neutralization of positive charge and strong interaction with oxygen containing functional groups on adsorbed GO. Increasing adsorption of GO and Ni on minerals as they coexist may thus reduce their mobility in soil. Extended X-ray absorption fine structure (EXAFS) spectroscopy data revealed that GO altered the microstructure of Ni on minerals, i.e., Ni formed edge-sharing surface species (at RNi-Fe similar to 3.2 angstrom) without GO, while a GO-bridging ternary surface complexes (at RNi-C similar to 2.49 angstrom A and RNi-Fe similar to 4.23 angstrom) was formed with GO. These findings improved the understanding of potential fate and toxicity of GO as well as the partitioning processes of Ni ions in aquatic and soil environments. (C) 2017 Elsevier Ltd. All rights reserved.
关键词Absorption Fine-structure Layered Double Hydroxide Arsenate Co-sorption Enhanced Sequestration Carbon Nanotubes Aqueous-solution Water Interface Heavy-metal Goethite Nanosheets
DOI10.1016/j.envpol.2017.10.047
收录类别SCI
语种英语
WOS记录号WOS:000424177000015
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/28922
专题中科院上海应用物理研究所2011-2018年
作者单位1.Sheng, GD
2.Huang, CC
3.Chen, GH
4.Sheng, J
5.Ren, XM
6.Hu, BW
7.Ma, JY
8.Wang, XK
9.Huang, YY
10.Alsaedi, A
11.Hayat, T
推荐引用方式
GB/T 7714
Sheng, GD,Huang, CC,Chen, GH,et al. Adsorption and co-adsorption of graphene oxide and Ni(II) on iron oxides: A spectroscopic and microscopic investigation[J]. ENVIRONMENTAL POLLUTION,2018,233:125-131.
APA Sheng, GD.,Huang, CC.,Chen, GH.,Sheng, J.,Ren, XM.,...&Hayat, T.(2018).Adsorption and co-adsorption of graphene oxide and Ni(II) on iron oxides: A spectroscopic and microscopic investigation.ENVIRONMENTAL POLLUTION,233,125-131.
MLA Sheng, GD,et al."Adsorption and co-adsorption of graphene oxide and Ni(II) on iron oxides: A spectroscopic and microscopic investigation".ENVIRONMENTAL POLLUTION 233(2018):125-131.
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