Regulating the aggregation of anionic nanoparticles for size-tunable nanochannels
| Autor: | Bao-Ku Zhu, Chuang-Chao Sun, Jia-Jia Yuan, Heba Abdallah, Ahmed M. Shaban, Marwa S. Shalaby, Li-Feng Fang, You-Zhi Song, Yan Yan, Ming-Yong Zhou |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Nanoparticle Filtration and Separation 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Biochemistry 0104 chemical sciences Metal chemistry.chemical_compound Membrane chemistry Dynamic light scattering Chemical engineering Ionic strength Transmission electron microscopy visual_art Amphiphile visual_art.visual_art_medium General Materials Science Polysulfone Physical and Theoretical Chemistry 0210 nano-technology |
| Zdroj: | Journal of Membrane Science. 604:118076 |
| ISSN: | 0376-7388 |
| DOI: | 10.1016/j.memsci.2020.118076 |
| Popis: | Nanochannels fabricated from the aggregation of charged amphiphilic nanoparticles are of growing interest. The nanochannel size can be further affected by electrostatic interactions between these nanoparticles and metal cations. Herein, size-tunable nanochannels (from 0.5 to 1.4 nm in average) are obtained via regulating the aggregation of anionic nanoparticles using sulfonated polysulfone (SPSF) nanoparticles as a model. Transmission electron microscope (TEM) images and dynamic light scattering (DLS) curves show the aggregates of SPSF nanoparticles in a wide range from nanoscale to micrometer-scale via adding different metal cations. Further analysis of the nanochannels shows the quantitative correlation between ionic strength of metal cations (ISMC) and nanochannel size. Preliminary evaluation of the size-tunable nanochannels exhibits a good separation performance with the Na2SO4 rejection of 98.3% and water flux of 5.8 L m-2 h-1 bar-1, indicating a high level among the reported researches. |
| Databáze: | OpenAIRE |
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