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- Title
Yolk–Shell Fe<sub>3</sub>O<sub>4</sub>@Void@N‐Carbon Nanostructures Based on One‐Step Deposition of SiO<sub>2</sub> and Resorcinol‐3‐Aminophenol‐Formaldehyde (R‐APF) Cocondensed Resin Dual Layers onto Fe<sub>3</sub>O<sub>4</sub> Nanoclusters
- Authors
Tian, Kesong; Wang, Junyan; Guo, Wanchun; Li, Ruifei; Cao, Ling; Xu, Zhaopeng; Wang, Haiyan
- Abstract
Yolk–shell magnetic nanoparticles@nitrogen‐enriched Carbon nanostructures with a magnetic core and a hollow nitrogen‐enriched carbon shell exhibit considerable promise in various applications, such as drug delivery, heterogenous catalysts, removal of metal ions and organic pollutants, and screening of biomolecules, due to their strong magnetic response, unique cavities, and the selective absorption ability of nitrogen‐enriched groups. However, their complicated synthesis always involves possible surface modification, layer‐by‐layer deposition of a sacrificial middle layer and an outer nitrogen‐enriched layer on magnetic nanoparticles, subsequent carbonization, and final removal of the sacrificial middle layer. Herein, yolk–shell Fe3O4@nitrogen‐enriched carbon nanostructures are constructed based on NH4+ ion‐induced one‐step deposition of SiO2 and Resorcinol‐3‐aminophenol‐formaldehyde cocondensed resin (R‐APF) dual layers onto poly acrylic acid‐modified Fe3O4 nanoclusters without any extra surface modification. The N‐Carbon shell thickness of the yolk–shell Fe3O4@Void@N‐Carbon nanostructure can be finely tailored though tailoring the feeding amount of aminophenol and resorcinol to tune the thickness of the outer R‐APF resin shell onto Fe3O4@SiO2 intermediate particles. This NH4+ ion‐induced one‐pot deposition of double layers can effectively promote synthesis efficiency of this kind of yolk–shell nanostructure.
- Subjects
NANOSTRUCTURES; MAGNETIC cores; MAGNETIC nanoparticles; METAL ions
- Publication
Macromolecular Rapid Communications, 2020, Vol 41, Issue 17, p1
- ISSN
1022-1336
- Publication type
Article
- DOI
10.1002/marc.202000307