Interaction Forces between Diaspore and Kaolinite in NaOL Solution Probed by EDLVO Theory and AFM Analysis
Molecular force plays an important role in the interaction between collector and minerals, which directly reflects the intrinsic reason for the selectivity and collection of the collector to minerals. In this work, the interaction forces between sodium oleate (NaOL) and minerals (kaolinite and diasp...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-09-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/12/9/1123 |
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| author | Yankun Wu Shichong Yang Wencui Chai Yijun Cao |
| author_facet | Yankun Wu Shichong Yang Wencui Chai Yijun Cao |
| author_sort | Yankun Wu |
| collection | DOAJ |
| description | Molecular force plays an important role in the interaction between collector and minerals, which directly reflects the intrinsic reason for the selectivity and collection of the collector to minerals. In this work, the interaction forces between sodium oleate (NaOL) and minerals (kaolinite and diaspore) were directly characterized by atomic force microscopy (AFM) combined with EDLVO theory. The results show that after interacting with NaOL, the zeta potentials of kaolinite and diaspore were more negative, and the hydrophobicity of minerals increased. EDLVO calculation results indicate that electrostatic repulsion dominated the interaction forces between mineral particles, and the van der Waals interaction energy, electrostatic interaction energy, and hydrophobic interaction energy increased after NaOL treatment. AFM measurements show that the NaOL collector increased the attraction force of diaspore-diaspore and kaolinite-kaolinite particles, and the increase in attraction force for diaspore-diaspore particles was larger than in kaolinite particles, which was consistent with the EDLVO results. The adhesion force between the NaOL collector and the diaspore surface was larger than in kaolinite, confirming the fact that NaOL had better collection and selectivity for diaspore than kaolinite. This work improves understanding of the interaction mechanisms between NaOL collector, diaspore, and kaolinite minerals. |
| first_indexed | 2024-03-09T23:04:46Z |
| format | Article |
| id | doaj.art-3c7ed80dd87f4ed3bef65e5a58c0b181 |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-09T23:04:46Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-3c7ed80dd87f4ed3bef65e5a58c0b1812023-11-23T17:55:53ZengMDPI AGMinerals2075-163X2022-09-01129112310.3390/min12091123Interaction Forces between Diaspore and Kaolinite in NaOL Solution Probed by EDLVO Theory and AFM AnalysisYankun Wu0Shichong Yang1Wencui Chai2Yijun Cao3Zhongyuan Critical Metals Laboratory, Zhengzhou University, Zhengzhou 450001, ChinaZhongyuan Critical Metals Laboratory, Zhengzhou University, Zhengzhou 450001, ChinaZhongyuan Critical Metals Laboratory, Zhengzhou University, Zhengzhou 450001, ChinaZhongyuan Critical Metals Laboratory, Zhengzhou University, Zhengzhou 450001, ChinaMolecular force plays an important role in the interaction between collector and minerals, which directly reflects the intrinsic reason for the selectivity and collection of the collector to minerals. In this work, the interaction forces between sodium oleate (NaOL) and minerals (kaolinite and diaspore) were directly characterized by atomic force microscopy (AFM) combined with EDLVO theory. The results show that after interacting with NaOL, the zeta potentials of kaolinite and diaspore were more negative, and the hydrophobicity of minerals increased. EDLVO calculation results indicate that electrostatic repulsion dominated the interaction forces between mineral particles, and the van der Waals interaction energy, electrostatic interaction energy, and hydrophobic interaction energy increased after NaOL treatment. AFM measurements show that the NaOL collector increased the attraction force of diaspore-diaspore and kaolinite-kaolinite particles, and the increase in attraction force for diaspore-diaspore particles was larger than in kaolinite particles, which was consistent with the EDLVO results. The adhesion force between the NaOL collector and the diaspore surface was larger than in kaolinite, confirming the fact that NaOL had better collection and selectivity for diaspore than kaolinite. This work improves understanding of the interaction mechanisms between NaOL collector, diaspore, and kaolinite minerals.https://www.mdpi.com/2075-163X/12/9/1123diasporekaoliniteinteraction forcesEDLVOAFM |
| spellingShingle | Yankun Wu Shichong Yang Wencui Chai Yijun Cao Interaction Forces between Diaspore and Kaolinite in NaOL Solution Probed by EDLVO Theory and AFM Analysis Minerals diaspore kaolinite interaction forces EDLVO AFM |
| title | Interaction Forces between Diaspore and Kaolinite in NaOL Solution Probed by EDLVO Theory and AFM Analysis |
| title_full | Interaction Forces between Diaspore and Kaolinite in NaOL Solution Probed by EDLVO Theory and AFM Analysis |
| title_fullStr | Interaction Forces between Diaspore and Kaolinite in NaOL Solution Probed by EDLVO Theory and AFM Analysis |
| title_full_unstemmed | Interaction Forces between Diaspore and Kaolinite in NaOL Solution Probed by EDLVO Theory and AFM Analysis |
| title_short | Interaction Forces between Diaspore and Kaolinite in NaOL Solution Probed by EDLVO Theory and AFM Analysis |
| title_sort | interaction forces between diaspore and kaolinite in naol solution probed by edlvo theory and afm analysis |
| topic | diaspore kaolinite interaction forces EDLVO AFM |
| url | https://www.mdpi.com/2075-163X/12/9/1123 |
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