One-pot synthesis of yolk–shell mesoporous carbon spheres with high magnetisation

Abstract

Monodisperse yolk–shell magnetic mesoporous carbon spheres (Fe3O4@void@C) were obtained by carbonization of Fe3O4@polymer and etching by NaOH.

Carbon-Based Magnetic Nanocarrier for Controlled Drug Release: A Green Synthesis Approach

“…Finally, having done the last washing with ethanol absolute, the MNPs were dried at 60 • C in the drying oven. The resultant NPs were denoted Fe 3 O 4 @polymer [19,28].…”

“…The carbonization occurred up to 600 • C at a heating rate of 1 • C·min −1 and the temperature was maintained at 600 • C for 3 h. The resultant NPs were etched under stirring with sodium hydroxide solution (10 mol·L −1 for 24 h at room temperature) and the product was washed by centrifugation with distilled water several times, until reaching pH 7. In the last step, the sample was washed with ethanol and dried at 60 • C in a drying oven [19,28] (CMNPs).…”

Synthesis of pH‐responsive magnetic yolk–shell nanoparticles: A comparison between conventional etching and new deswelling approaches

“…Large particle surface area, free core surface and therefore more accessible active sites, high loading capacity of guest molecules in the void space and providing enough space for probable core expansion are notable properties of yolk–shell nanoparticles, either organic or inorganic. They are appropriate choices for biomedical, catalysis, adsorbent and chemical sensing applications . In this regard, metallic magnetic nanoparticles can be considered as cores since they provide the possibility of magnetically separable adsorbents and reusable catalysts and advanced biomedical materials for either bio‐imaging (magnetic resonance imaging) or targeted drug delivery …”

Magnetic Core–Shell to Yolk–Shell Structures in Palladium‐Catalyzed Suzuki–Miyaura Reactions: Heterogeneous versus Homogeneous Nature

“…More recently, novel hierarchical core–shell structures composed of an inner protected Fe 3 O 4 core–shell nanostructure, a porous outer shell, and noble‐metal NPs active species clamped by the inside and outside shell, which can stabilize the active metal NPs to a higher degree and reduce the amount of leaching . The magnetic yolk–shell structures, which have a characteristic hollow component, an extraordinary configuration of a movable magnetic interior core, void space, and a penetrable outer shell renders them viable candidates . As such, they have also been a hot spot of scientific research of late motivating application research in areas like photocatalysis, nanoscale reactors, and drug carriers .…”

“…[29][30][31][32][33][34][35] The magnetic yolk-shell structures, which have ac haracteristic hollow component, an extraordinary configuration of am ovablem agnetici nterior core,v oid space, and ap enetrable outer shell renders them viable candidates. [36][37][38][39][40][41][42] As such, they have also been ah ot spot of scientific research of late motivating application research in areas like photocatalysis, [43] nanoscale reactors, [44] and drugc arriers. [45] Zhao et al synthesized multicomponent and multifunctional Fe 3 O 4 @SiO 2 -Au@mSiO 2 hierarchical core-shell structures for the reduction of 4-nitrophenol and styrene epoxidation.…”