Yolk-Shell Fe3 O4 @Void@N-Carbon Nanostructures Based on One-Step Deposition of SiO2 and Resorcinol-3-Aminophenol-Formaldehyde (R-APF) Cocondensed Resin Dual Layers onto Fe3 O4 Nanoclusters.,Macromolecular Rapid Communications

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Yolk-Shell Fe3 O4 @Void@N-Carbon Nanostructures Based on One-Step Deposition of SiO2 and Resorcinol-3-Aminophenol-Formaldehyde (R-APF) Cocondensed Resin Dual Layers onto Fe3 O4 Nanoclusters.
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2020-08-07 , DOI: 10.1002/marc.202000307
Kesong Tian ₁ , Junyan Wang ₁ , Wanchun Guo ₁ , Ruifei Li ₁ , Ling Cao ₁ , Zhaopeng Xu ₂ , Haiyan Wang ₁

Affiliation

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.

中文翻译：

基于SiO2和间苯二酚-3-氨基酚-甲醛（R-APF）共缩树脂双层一步沉积到Fe3 O4纳米簇上的卵黄壳Fe3 O4 @空@N碳纳米结构。

卵黄壳磁性纳米颗粒@富氮的碳纳米结构，具有磁芯和中空富氮的碳壳，在各种应用中都显示出巨大的希望，例如药物输送，非均相催化剂，金属离子和有机污染物的去除以及生物分子的筛选，由于其强大的磁响应，独特的空腔以及富氮基团的选择性吸收能力。然而，它们复杂的合成过程总是涉及可能的表面改性，在磁性纳米颗粒上逐层沉积牺牲中间层和外部富氮层，随后的碳化以及最终去除牺牲中间层。在此，蛋黄壳Fe ₃ O ₄@富含氮的碳纳米结构是基于NH ₄⁺离子诱导的SiO ₂和间苯二酚-3-氨基苯酚-甲醛共聚树脂（R-APF）双层一步沉积到聚丙烯酸改性的Fe ₃ O ₄上而构建的无需任何额外表面修饰的纳米簇。可以通过定制氨基酚和间苯二酚的进料量来调整蛋黄壳Fe ₃ O ₄ @ Void @ N-Carbon纳米结构的N-碳壳厚度，以调整外部R-APF树脂壳在Fe ₃上的厚度。O ₄ @SiO ₂中间颗粒。NH ₄⁺ 离子诱导的双层单锅沉积可以有效地提高这种蛋黄壳纳米结构的合成效率。

更新日期：2020-09-08

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