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
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Journal ArticleDOI
The Preparation of Au@TiO 2 Yolk–Shell Nanostructure and its Applications for Degradation and Detection of Methylene Blue
TL;DR: A new type of Au@TiO2 yolk–shell nanostructures is synthesised by integrating ion sputtering method with atomic layer deposition (ALD) technique and its applications as visible light-driven photocatalyst and surface-enhanced Raman spectroscopy (SERS) substrate.
Journal ArticleDOI
99mTc radiolabelling of Fe3O4–Au core–shell and Au–Fe3O4 dumbbell-like nanoparticles
Michael Felber,Roger Alberto +1 more
TL;DR: This work focuses on gold containing magnetic nanomaterials, and the radiolabelling of magnetic Fe3O4-Au core-shell and Fe3 olympic-like nanoparticles with the [(99m)Tc(CO)3](+) fragment is described.
Journal ArticleDOI
Fe3O4/Au/Fe3O4 nanoflowers exhibiting tunable saturation magnetization and enhanced bioconjugation
Wenli Hui,Wenli Hui,Feng Shi,Kunping Yan,Mingli Peng,Xiao Cheng,Yanling Luo,Xuemei Chen,Vellaisamy A. L. Roy,Yali Cui,Zuankai Wang +10 more
TL;DR: This paper reports on a facile method to synthesize novel Fe(3)O(4)/Au/Fe(4) nanoparticles (nanoflowers) that integrate hybrid components and surface types that retain their surface plasmon property and can be tuned by controlling the size of additional petals.
Journal ArticleDOI
Fabrication and characterization of magnetic nanoporous Cu/(Fe,Cu)3O4 composites with excellent electrical conductivity by one-step dealloying
TL;DR: In this paper, a facile one-step dealloying process was used to construct magnetic nanoporous Cu(NPC)/(Fe,Cu)3O4 composites with tunable magnetism and excellent conductivity.
Journal ArticleDOI
Formation of multifunctional Fe 3 O 4 /Au composite nanoparticles for dual-mode MR/CT imaging applications
TL;DR: In this article, the synthesis and assembly of "dumbbelllike" and "core/shell" Fe3O4/Au composite nanoparticles for dual-mode magnetic resonance (MR) and computed tomography (CT) imaging applications are reviewed.
References
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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.