| Autor: |
Shen, Jing, Wang, Dongxiu, Yang, Li, Wang, Tongwen, Yang, Qianmo, Wang, Jun |
| Předmět: |
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| Zdroj: |
New Journal of Chemistry; 1/7/2023, Vol. 47 Issue 1, p362-372, 11p |
| Abstrakt: |
Bilayered sodium dodecyl sulfate (SDS)/ionic liquids (alkyl imidazolium type ionic liquid Cnmim+, n = 10, 12, 14, and 16) were first employed to modify the surface of Fe3O4 nanoparticles for the formation of stable aqueous ferrofluids. Subsequently, in the synthesized bilayered SDS/C16mim+-stabilized ferrofluid (Fe3O4/SDS/C16mim+), magnetic mesoporous silica with a cubic (Ia3d) mesostructure (Fe3O4@MCM-48) has been synthesized using tetraethylorthosilicate as the silicon source and the long chain C16mim+ as a template again. The research results showed that the combination of SDS and long chain Cnmim+ (such as C16mim+) is superior to that of SDS and short chain Cnmim+ (such as C10mim+) for the production of stable ferrofluids in water. Moreover, Fe3O4@MCM-48 (0.1 g) with Fe3O4 particles embedded in the network of cubic mesoporous silica showed decolorization rates of up to ∼90% in 25 min for four dye (methylene blue, rhodamine B, malachite green, and methyl violet) solutions (50 mL, 100 mg L−1). In addition, the malachite green-adsorbed Fe3O4@MCM-48 can be separated and recovered under an external magnetic field. This method in which the long chain ionic liquid C16mim+ can be manipulated in turn not only as the modifier but also as the mesoporous templating agent provides important guidelines for the multifunctional applications of C16mim+ in the synthesis of various nanostructured materials. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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