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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.3c01394
|2 doi
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|a pubmed24n1209.xml
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|a (NLM)37791809
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|a DE-627
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|a eng
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| 100 |
1 |
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|a Ma, Xiong-Ying
|e verfasserin
|4 aut
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| 245 |
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|a Quantitative Evaluation of the Effects of Salt Concentration and pH on the Self-Assembly of Kaolin Nanoplatelets
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|c 2023
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|a Text
|b txt
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 31.10.2023
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Diffusion of pollutants in the earth's strata threatens both the environment and human health. The clay soil microstructure that plays a crucial role in the diffusion of pollutants is significantly influenced by the pore water chemistry. However, there is still a lack of quantitative evaluation of pore water chemistry on clay fabric evolution. To bring new insights, we systematically examined the impact of water chemistry (mainly refers to salt ion concentration and pH) on the self-assembly form (fabric) of kaolin platelets and evaluated the fabric quantitatively. The results show that as the salt ion concentration increases, the "kaolin book" structure is formed, which can be captured by the (001) and (020) pole figures. Under acidic conditions, kaolin platelets turn randomly arranged; however, with the increase of pH, the edge-to-face (EF) microstructure of kaolin platelets gradually changes to a face-to-face (FF) structure. Under alkali-eq conditions, kaolin platelets form a dispersion assembly dominated by FF repulsion. However, the strong alkaline condition triggers the decomposition of kaolin, leading to a notable decrease in the maximum pole density. The conclusions were substantiated through insightful AFM tests. Moreover, we addressed the advantages and limitations of 1DXRD and 2DXRD by analyzing the trend between the OI and pole density, with 2DXRD being favored for its accuracy. Overall, this study provides insights into clay platelets and the self-assembly of kaolin under different water chemistry conditions, which have significant implications for predicting and modeling the physical properties of clay under special environmental conditions
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|a Journal Article
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1 |
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|a Xia, Zhao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Su, Chen-Xi
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cheng, Yin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yu, Hao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kang, Xin
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 39(2023), 41 vom: 17. Okt., Seite 14500-14510
|w (DE-627)NLM098181009
|x 1520-5827
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|g volume:39
|g year:2023
|g number:41
|g day:17
|g month:10
|g pages:14500-14510
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|u http://dx.doi.org/10.1021/acs.langmuir.3c01394
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