Journal ArticleDOI
Dumbbell-like Bifunctional Au−Fe3O4 Nanoparticles
TLDR
The dumbbell is formed through epitaxial growth of iron oxide on the Au seeds, and the growth can be affected by the polarity of the solvent, as the use of diphenyl ether results in flower-like Au-Fe(3)O(4) nanoparticles.Abstract:
Dumbbell-like Au−Fe3O4 nanoparticles are synthesized using decomposition of Fe(CO)5 on the surface of the Au nanoparticles followed by oxidation in 1-octadecene solvent. The size of the particles is tuned from 2 to 8 nm for Au and 4 nm to 20 nm for Fe3O4. The particles show the characteristic surface plasmon absorption of Au and the magnetic properties of Fe3O4 that are affected by the interactions between Au and Fe3O4. The dumbbell is formed through epitaxial growth of iron oxide on the Au seeds, and the growth can be affected by the polarity of the solvent, as the use of diphenyl ether results in flower-like Au−Fe3O4 nanoparticles.read more
Citations
More filters
Journal ArticleDOI
Dumbbell-like Au-Fe3O4 nanoparticles for target-specific platin delivery.
TL;DR: The work demonstrates that the dumbbell-like Au-Fe(3)O(4) NPs are promising nanocarriers for highly sensitive diagnostic and therapeutic applications.
Journal ArticleDOI
Bifunctional Au-Fe3O4 nanoparticles for protein separation.
Jie Bao,Wei Chen,Taotao Liu,Yulin Zhu,Peiyuan Jin,Leyu Wang,Junfeng Liu,Yongge Wei,Yadong Li +8 more
TL;DR: It is demonstrated that as-prepared Au-Fe(3)O(4) nanoparticles can be modified with nitrilotriacetic acid molecules through Au-S interaction and used to separate proteins simply with the assistance of a magnet.
Journal ArticleDOI
Progress in the preparation of magnetic nanoparticles for applications in biomedicine
Alejandro G. Roca,Rocío Costo,Aldo F. Rebolledo,Sabino Veintemillas-Verdaguer,Pedro Tartaj,T. González-Carreño,María del Puerto Morales,Carlos J. Serna +7 more
TL;DR: A review of recent advances in synthesis routes for quickly and reliably making and functionalizing magnetic nanoparticles for applications in biomedicine can be found in this article, where the authors put special emphasis on describing synthetic strategies that result in the production of nanosized materials with well-defined physical and crystallochemical characteristics as well as colloidal and magnetic properties.
Journal ArticleDOI
Stabilizing metal nanoparticles for heterogeneous catalysis
TL;DR: The present perspective paper briefly reviews the mechanisms underlying nanoparticle sintering, and gives an overview of emerging approaches towards stabilizing metal nanoparticles for heterogeneous catalysis, highlighting the current needs for further developments in the field.
Journal ArticleDOI
Multifunctional yolk-shell nanoparticles: a potential MRI contrast and anticancer agent.
Jinhao Gao,Gaolin Liang,Jerry S. Cheung,Yue Pan,Yi Kuang,Fan Zhao,Bei Zhang,Xixiang Zhang,Ed X. Wu,Bing Xu +9 more
TL;DR: It is indicated that these unique yolk-shell nanoparticles may ultimately lead to new designs of multifunctional nanostructures for nanomedicine, and may serve both as an MRI contrast agent and as a potent anticancer drug.
References
More filters
Journal ArticleDOI
Gold nanoparticles: assembly, supramolecular chemistry, quantum-size-related properties, and applications toward biology, catalysis, and nanotechnology.
TL;DR: A review of gold nanoparticles can be found in this article, where the most stable metal nanoparticles, called gold colloids (AuNPs), have been used for catalysis and biology applications.
Journal ArticleDOI
Monodisperse MFe2O4 (M = Fe, Co, Mn) Nanoparticles
Shouheng Sun,Hao Zeng,David B. Robinson,Simone Raoux,Philip M. Rice,Shan X. Wang,Guanxiong Li +6 more
TL;DR: As-synthesized iron oxide nanoparticles have a cubic spinel structure as characterized by HRTEM, SAED, and XRD and can be transformed into hydrophilic ones by adding bipolar surfactants, and aqueous nanoparticle dispersion is readily made.
Journal ArticleDOI
Nanoparticles with Raman Spectroscopic Fingerprints for DNA and RNA Detection
TL;DR: Six dissimilar DNA targets with six Raman-labeled nanoparticle probes were distinguished, as well as two RNA targets with single nucleotide polymorphisms, and the current unoptimized detection limit of this method is 20 femtomolar.
Journal ArticleDOI
Novel Gold Catalysts for the Oxidation of Carbon Monoxide at a Temperature far Below 0 °C
TL;DR: In this article, a variety of gold catalysts are used to catalyze the oxidation of carbon monoxide at temperatures as low as −70 °C and are stable in a moistened gas atmosphere.
Journal ArticleDOI
Epitaxial Growth of Highly Luminescent CdSe/CdS Core/Shell Nanocrystals with Photostability and Electronic Accessibility
TL;DR: The synthesis of epitaxially grown, wurtzite CdSe/CdS core/shell nanocrystals is reported in this paper, where shells of up to three monolayers in thickness were grown on cores ranging in diameter from 23 to 39.