期刊
LANGMUIR
卷 36, 期 31, 页码 9235-9240出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.0c01533
关键词
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资金
- Japan Society for the Promotion of Science (JSPS) [JP17K15298, JP20K15567]
- JST-Mirai R&D Program from the Japan Science and Technology Agency (JST) [JPMJMI17ED]
Magnetic nano/microparticles offer potential benefits for environmental applications such as water purification. However, achieving functional and stable surfaces remains a critical challenge for magnetic particle design. Nanocellulose, a naturally occurring nanofiber, is a promising surface material candidate, owing to its ease of functionalization and chemical stability. Here, we developed a magnetically collectable nanocellulose-coated polymer microparticle synthesis method, based on Pickering emulsion templating. The average diameter of the core/shell microparticles was 2.7 mu m, and they were well dispersed in water, owing to the coverage with surface-carboxylated nanocelluloses. Most magnetic Fe3O4 nanoparticles with a 30 nm diameter were encapsulated in the microparticles and enriched at the CNF/polymer interfaces. The nanocellulose shell showed high loading of cationic dye molecules. In addition, the nanocellulose-coated microparticles could be recovered even after the dye loading by exposing the aqueous dispersion to a magnetic field.
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