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| Content Provider | IET Digital Library |
|---|---|
| Author | Zhang, Yifan Liu, Xiaoli Peng, Erwin Li, Galong Xiao, Wen Zhang, Huan Yu, Baozhi Wu, Jianpeng Luo, Yane Fan, Haiming |
| Abstract | Surfactant-free α-Fe2O3 nanorings (NRs) were directly converted into water-dispersible Fe3O4 NRs through a simple and straightforward approach. In this process, uniform α-Fe2O3 NRs obtained through hydrothermal synthesis method are firstly thermally reduced to hydrophobic Fe3O4 NRs in the presence of hydrophobic oleic acid surfactant and non-polar trioctylamine solvent (under a flow of 5% H2/95% Ar). Subsequently, oxidative cleavage of oleic acid capping agent using sodium periodate oxidising agent is imparted to yield water-dispersible Fe3O4 NRs. As compared with the traditional solid-state reduction in tube furnace, the obtained Fe3O4 NRs using solution-based reduction process can retain its original uniform ring shape with good crystallinity and well-defined magnetic vortex domain. Moreover, with the presence of azelaic acid on the surface of hydrophilic Fe3O4 NRs, antibody or drugs can be easily conjugated, which further boost its potential theranostics application. This work provides a convenient approach to convert surfactant-free nanoparticle (NP) powders into water-dispersible NPs colloidal solutions for various biomedical applications. |
| Starting Page | 814 |
| Ending Page | 818 |
| Page Count | 5 |
| Volume Number | 11 |
| e-ISSN | 17500443 |
| Issue Number | Issue 12, Dec (2016) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/mnl/11/12 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/mnl.2016.0304 |
| Journal | Micro & Nano Letters |
| Publisher Date | 2016-12-01 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Antibody Azelaic Acid Colloidal Crystals Colloids Crystal Growth from Solution Disperse System Drugs Facile Synthesis Fe2O3 Hydrophilic NR Surface Hydrophobic NR Hydrophobic Oleic Acid Surfactant Hydrophobicity Hydrothermal Synthesis Iron Compound Magnetic Vortex Domain Nanofabrication Nanoparticle Nanotube And Nanostructured Material Nonpolar Trioctylamine Solvent Oleic Acid Capping Agent Oxidative Cleavage Sodium Periodate Oxidising Agent Solution-based Reduction Process Structure of Solid Clusters Surfactant-free Hematite Nanorings Surfactant-free Nanoparticle Powder Surfactant-free Α-Fe2O3 Nanorings Surfactants Theranostics Application Traditional Solid-state Reduction Tube Furnace Water-dispersible Magnetite Nanorings Water-dispersible NP Colloidal Solutions Water-dispersible NR |
| Content Type | Text |
| Resource Type | Article |
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