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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Synthesis of ZnSe/CdS/ZnSe Nanobarbells Showing Photoinduced Charge Separation
Maria Kirsanova,Alexander Nemchinov,Nishshanka N. Hewa-Kasakarage,Nicholas Schmall,Mikhail Zamkov +4 more
TL;DR: In this paper, a colloidal synthesis of barbell-shaped nanocrystals comprising a type II heterojunction of ZnSe and CdS domains was reported, showing compelling evidence of photoinduced charge separation at the interface of the materials.
Journal ArticleDOI
Sonochemical synthesis of magnetic Janus nanoparticles.
TL;DR: It is shown that the Janus particles can be used to form kinetically stable oil-in-water emulsions that can be spontaneously broken on application of an external magnetic field.
Journal ArticleDOI
Monodispersed Co, Ni-Ferrite Nanoparticles with Tunable Sizes: Controlled Synthesis, Magnetic Properties, and Surface Modification
TL;DR: In this article, the formation mechanism of the nanoparticles during the solvothermal process is proposed based on the experimental results, and the magnetic properties of nanoparticles with the same size but different compositions were compared.
Journal ArticleDOI
Colloidal polymers from inorganic nanoparticle monomers
TL;DR: The use of preformed inorganic nanoparticles as colloidal monomers has received recent attention for the formation of one-dimensional (1-D) mesostructures, or colloidal polymers as discussed by the authors.
Journal ArticleDOI
Superparamagnetic plasmonic nanohybrids: shape-controlled synthesis, TEM-induced structure evolution, and efficient sunlight-driven inactivation of bacteria.
TL;DR: A simple solvothermal method is described here for the first time to synthesize a series of novel water-soluble nanohybrids composed of shape-tuned Ag cores and a Fe(3)O(4) shell that exhibited enhanced photocatalytic inactivation of bacteria at very low concentrations under natural sunlight.
References
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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.