CAS OpenIR  > 中科院上海应用物理研究所2011-2020年
EXAFS study of the interfacial interaction of nickel(II) on titanate nanotubes: Role of contact time, pH and humic substances
Sheng, GD; Ye, L; Li, YM; Dong, HP; Li, H; Gao, X; Huang, YY; gdsheng@usx.edu.cn
2014
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume248Pages:71—78
AbstractIn this work, the interaction mechanism and local atomic structures of Ni(II) on titanate nanotubes (TNTs) as a function of contact time, solution pH and addition of humic acid (HA) or fulvic acid (FA) were studied mainly via the extended X-ray absorption fine structure (EXAFS) spectroscope. The results indicate that Ni(II) can be interacted with TNTs by different mechanisms, largely depending on environmental conditions. At pH 4.0 and short contact time, Ni(II) interaction with TNTs is mainly dominated by outer-sphere surface complexation. With medium increasing pH, Ni(II) interaction with TNTs tends to transform from outer-sphere surface complexes to inner-sphere surface complexes, and a mixture of inner-sphere surface complexes and surface precipitates is formed at pH 7.0 or 8.0. Besides, the interaction of Ni(II) with TNTs becomes more favorable over extended time, and EXAFS spectra analysis indicates outer-sphere surface complexes at short contact time is transformed to inner-sphere surface complexes and surface precipitates over long contact time. The addition of HA or FA enhances Ni(II) interaction with TNTs at low pH, which is attributed to the formation of "metal-bridging" (type A) and "ligand-bridging" (type B) ternary surface complexes. The results obtained are very important to understand the interaction of Ni(II) and related heavy metal ion with nano-materials such as TNTs once released into natural environment. (c) 2014 Elsevier B.V. All rights reserved.
KeywordNuclear-magnetic-resonance Illite-water Suspensions Fulvic-acid Ionic-strength Radionuclide Ni-63(Ii) Mx-80 Bentonite Adsorption Sorption Batch Xps
Indexed BySCI
Language英语
WOS IDWOS:000337649000008
Citation statistics
Cited Times:76[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/14126
Collection中科院上海应用物理研究所2011-2020年
Corresponding Authorgdsheng@usx.edu.cn
Recommended Citation
GB/T 7714
Sheng, GD,Ye, L,Li, YM,et al. EXAFS study of the interfacial interaction of nickel(II) on titanate nanotubes: Role of contact time, pH and humic substances[J]. CHEMICAL ENGINEERING JOURNAL,2014,248:71—78.
APA Sheng, GD.,Ye, L.,Li, YM.,Dong, HP.,Li, H.,...&gdsheng@usx.edu.cn.(2014).EXAFS study of the interfacial interaction of nickel(II) on titanate nanotubes: Role of contact time, pH and humic substances.CHEMICAL ENGINEERING JOURNAL,248,71—78.
MLA Sheng, GD,et al."EXAFS study of the interfacial interaction of nickel(II) on titanate nanotubes: Role of contact time, pH and humic substances".CHEMICAL ENGINEERING JOURNAL 248(2014):71—78.
Files in This Item: Download All
File Name/Size DocType Version Access License
EXAFS study of the i(1346KB) 开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Sheng, GD]'s Articles
[Ye, L]'s Articles
[Li, YM]'s Articles
Baidu academic
Similar articles in Baidu academic
[Sheng, GD]'s Articles
[Ye, L]'s Articles
[Li, YM]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Sheng, GD]'s Articles
[Ye, L]'s Articles
[Li, YM]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: EXAFS study of the interfacial interaction of nickel(II) on titanate nanotubes....pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.