pH and Magnetism Dual-Responsive Pickering Emulsion Stabilized by Dynamic Covalent Fe<sub>3</sub>O<sub>4</sub> Nanoparticles
Herein, we describe pH and magnetism dual-responsive liquid paraffin-in-water Pickering emulsion stabilized by dynamic covalent Fe<sub>3</sub>O<sub>4</sub> (DC-Fe<sub>3</sub>O<sub>4</sub>) nanoparticles. On one hand, the Pickerinfigureg emulsions are s...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-07-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/15/2587 |
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| author | Gaihuan Ren Zhanzhao Li Dongxu Lu Bo Li Lulu Ren Wenwen Di Hongqin Yu Jianxin He Dejun Sun |
| author_facet | Gaihuan Ren Zhanzhao Li Dongxu Lu Bo Li Lulu Ren Wenwen Di Hongqin Yu Jianxin He Dejun Sun |
| author_sort | Gaihuan Ren |
| collection | DOAJ |
| description | Herein, we describe pH and magnetism dual-responsive liquid paraffin-in-water Pickering emulsion stabilized by dynamic covalent Fe<sub>3</sub>O<sub>4</sub> (DC-Fe<sub>3</sub>O<sub>4</sub>) nanoparticles. On one hand, the Pickerinfigureg emulsions are sensitive to pH variations, and efficient demulsification can be achieved by regulating the pH between 10 and 2 within 30 min. The dynamic imine bond in DC-Fe<sub>3</sub>O<sub>4</sub> can be reversibly formed and decomposed, resulting in a pH-controlled amphiphilicity. The Pickering emulsion can be reversibly switched between stable and unstable states by pH at least three times. On the other hand, the magnetic Fe<sub>3</sub>O<sub>4</sub> core of DC-Fe<sub>3</sub>O<sub>4</sub> allowed rapid separation of the oil droplets from Pickering emulsions under an external magnetic field within 40 s, which was a good extraction system for purifying the aqueous solution contaminated by rhodamine B. The dual responsiveness enables Pickering emulsions to have better control of their stability and to be applied more broadly. |
| first_indexed | 2024-03-09T05:09:38Z |
| format | Article |
| id | doaj.art-fd536a410b7e49e28b87e7edb8c1b963 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T05:09:38Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-fd536a410b7e49e28b87e7edb8c1b9632023-12-03T12:51:50ZengMDPI AGNanomaterials2079-49912022-07-011215258710.3390/nano12152587pH and Magnetism Dual-Responsive Pickering Emulsion Stabilized by Dynamic Covalent Fe<sub>3</sub>O<sub>4</sub> NanoparticlesGaihuan Ren0Zhanzhao Li1Dongxu Lu2Bo Li3Lulu Ren4Wenwen Di5Hongqin Yu6Jianxin He7Dejun Sun8Textile and Garment Industry of Research Institute, Zhongyuan University of Technology, Zhengzhou 450007, ChinaTextile and Garment Industry of Research Institute, Zhongyuan University of Technology, Zhengzhou 450007, ChinaSchool of Mechanical and Electrical Engineering, Zhengzhou University of Industrial Technology, Zhengzhou 450007, ChinaTextile and Garment Industry of Research Institute, Zhongyuan University of Technology, Zhengzhou 450007, ChinaKey Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, ChinaKey Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, ChinaTextile and Garment Industry of Research Institute, Zhongyuan University of Technology, Zhengzhou 450007, ChinaTextile and Garment Industry of Research Institute, Zhongyuan University of Technology, Zhengzhou 450007, ChinaKey Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, ChinaHerein, we describe pH and magnetism dual-responsive liquid paraffin-in-water Pickering emulsion stabilized by dynamic covalent Fe<sub>3</sub>O<sub>4</sub> (DC-Fe<sub>3</sub>O<sub>4</sub>) nanoparticles. On one hand, the Pickerinfigureg emulsions are sensitive to pH variations, and efficient demulsification can be achieved by regulating the pH between 10 and 2 within 30 min. The dynamic imine bond in DC-Fe<sub>3</sub>O<sub>4</sub> can be reversibly formed and decomposed, resulting in a pH-controlled amphiphilicity. The Pickering emulsion can be reversibly switched between stable and unstable states by pH at least three times. On the other hand, the magnetic Fe<sub>3</sub>O<sub>4</sub> core of DC-Fe<sub>3</sub>O<sub>4</sub> allowed rapid separation of the oil droplets from Pickering emulsions under an external magnetic field within 40 s, which was a good extraction system for purifying the aqueous solution contaminated by rhodamine B. The dual responsiveness enables Pickering emulsions to have better control of their stability and to be applied more broadly.https://www.mdpi.com/2079-4991/12/15/2587Pickering emulsiondynamic covalent bondpH-responsivemagnetism-responsiveextraction efficiency |
| spellingShingle | Gaihuan Ren Zhanzhao Li Dongxu Lu Bo Li Lulu Ren Wenwen Di Hongqin Yu Jianxin He Dejun Sun pH and Magnetism Dual-Responsive Pickering Emulsion Stabilized by Dynamic Covalent Fe<sub>3</sub>O<sub>4</sub> Nanoparticles Nanomaterials Pickering emulsion dynamic covalent bond pH-responsive magnetism-responsive extraction efficiency |
| title | pH and Magnetism Dual-Responsive Pickering Emulsion Stabilized by Dynamic Covalent Fe<sub>3</sub>O<sub>4</sub> Nanoparticles |
| title_full | pH and Magnetism Dual-Responsive Pickering Emulsion Stabilized by Dynamic Covalent Fe<sub>3</sub>O<sub>4</sub> Nanoparticles |
| title_fullStr | pH and Magnetism Dual-Responsive Pickering Emulsion Stabilized by Dynamic Covalent Fe<sub>3</sub>O<sub>4</sub> Nanoparticles |
| title_full_unstemmed | pH and Magnetism Dual-Responsive Pickering Emulsion Stabilized by Dynamic Covalent Fe<sub>3</sub>O<sub>4</sub> Nanoparticles |
| title_short | pH and Magnetism Dual-Responsive Pickering Emulsion Stabilized by Dynamic Covalent Fe<sub>3</sub>O<sub>4</sub> Nanoparticles |
| title_sort | ph and magnetism dual responsive pickering emulsion stabilized by dynamic covalent fe sub 3 sub o sub 4 sub nanoparticles |
| topic | Pickering emulsion dynamic covalent bond pH-responsive magnetism-responsive extraction efficiency |
| url | https://www.mdpi.com/2079-4991/12/15/2587 |
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