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Ni(II) sorption mechanism at the vermiculite-water interface: Effects of interlayer

文献类型：期刊论文

作者Han, Bin1,2; He, Bihong1,2; Geng, Rongyue1,2; Zhao, Xiaolan1,2; Li, Ping1; Hang, Jianjun1; Fan, Qiaohui1
刊名JOURNAL OF MOLECULAR LIQUIDS
出版日期2019-01-15
卷号274页码:362-369
关键词Vermiculite Interlayer Ni(II) Sorption mechanism Modelling EXAFS
ISSN号0167-7322
DOI10.1016/j.molliq.2018.10.153
英文摘要In this study, the effects of interlayer on Ni(II) sorption at the vermiculite-water interface was investigated by combining batch technique, surface complexation model (SCM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and extended X-ray absorption fine structure (EXAFS) analyses. The results showed that alkali cations can enter the interlayer of vermiculite, and cause the collapse of vermiculite interlayer to different extent mainly due to the different ionic radii and hydrated energies. XRD patterns confirmed the order of collapse extent following the trend of Cs+ approximate to Rb+ > K+ > Na+. Subsequently, the sorption edges of Ni(II) on vermiculite were exhibiting the same trends as the interlayer collapse extents in different electrolytes. SCM confirmed that the sorption was mainly controlled by ion exchange (IE) in low pH region, while the inner-sphere complexes (ISCs) and surface-induced precipitates became the dominant species in high pH region. Both XPS and EXAFS analyses have confirmed that the formations of Ni-precipitates and Ni-Al layer double hydroxide (Ni-Al LDH) were indeed enhanced after the interlayer collapsed. Therefore, the sorption mechanisms of Ni(II) could be regulated by the interlayer of vermiculite. These findings are of great importance to understand the sorption mechanisms of heavy metals at the expandable clay-water interfaces and their environmental behaviors. (C) 2018 Elsevier B.V. All rights reserved.
WOS关键词NA-MONTMORILLONITE ; HEAVY-METALS ; PRECIPITATE FORMATION ; AQUEOUS-SOLUTION ; ZN SORPTION ; ADSORPTION ; NI ; EXAFS ; KINETICS ; BENTONITE
资助项目National Natural Science Foundation of China[41573128] ; National Natural Science Foundation of China[21601179] ; National Natural Science Foundation of China[21876172] ; National Natural Science Foundation of China[21601169] ; Natural Science Foundation of Gansu Province[17JR5RA309] ; Key Laboratory Project of Gansu Province[1309RTSA041] ; "100-Talent" Program from the Chinese Academy of Sciences
WOS研究方向Chemistry ; Physics
语种英语
WOS记录号WOS:000457660000040
出版者ELSEVIER SCIENCE BV
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Gansu Province ; Natural Science Foundation of Gansu Province ; Natural Science Foundation of Gansu Province ; Natural Science Foundation of Gansu Province ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; "100-Talent" Program from the Chinese Academy of Sciences ; "100-Talent" Program from the Chinese Academy of Sciences ; "100-Talent" Program from the Chinese Academy of Sciences ; "100-Talent" Program from the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Gansu Province ; Natural Science Foundation of Gansu Province ; Natural Science Foundation of Gansu Province ; Natural Science Foundation of Gansu Province ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; "100-Talent" Program from the Chinese Academy of Sciences ; "100-Talent" Program from the Chinese Academy of Sciences ; "100-Talent" Program from the Chinese Academy of Sciences ; "100-Talent" Program from the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Gansu Province ; Natural Science Foundation of Gansu Province ; Natural Science Foundation of Gansu Province ; Natural Science Foundation of Gansu Province ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; "100-Talent" Program from the Chinese Academy of Sciences ; "100-Talent" Program from the Chinese Academy of Sciences ; "100-Talent" Program from the Chinese Academy of Sciences ; "100-Talent" Program from the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Gansu Province ; Natural Science Foundation of Gansu Province ; Natural Science Foundation of Gansu Province ; Natural Science Foundation of Gansu Province ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; "100-Talent" Program from the Chinese Academy of Sciences ; "100-Talent" Program from the Chinese Academy of Sciences ; "100-Talent" Program from the Chinese Academy of Sciences ; "100-Talent" Program from the Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/90515]  
专题地质与地球物理研究所_兰州油气中心
通讯作者Fan, Qiaohui
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources, Gansu Prov Key Lab Petr Resources Res, Lanzhou 730000, Gansu, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Han, Bin,He, Bihong,Geng, Rongyue,et al. Ni(II) sorption mechanism at the vermiculite-water interface: Effects of interlayer[J]. JOURNAL OF MOLECULAR LIQUIDS,2019,274:362-369.
APA Han, Bin.,He, Bihong.,Geng, Rongyue.,Zhao, Xiaolan.,Li, Ping.,...&Fan, Qiaohui.(2019).Ni(II) sorption mechanism at the vermiculite-water interface: Effects of interlayer.JOURNAL OF MOLECULAR LIQUIDS,274,362-369.
MLA Han, Bin,et al."Ni(II) sorption mechanism at the vermiculite-water interface: Effects of interlayer".JOURNAL OF MOLECULAR LIQUIDS 274(2019):362-369.

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来源：地质与地球物理研究所

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