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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Bi-phase dispersible Fe3O4/Ag core–shell nanoparticles: Synthesis, characterization and properties
TL;DR: In this paper, a bi-phase dispersible Fe 3 O 4 /Ag core-shell nanoparticles were successfully synthesized via non-aqueous nanoemulsion process using the triblock copolymer poly(ethylene glycol)-block-poly(propylene glycol)blockpoly(ethyleni glycol), as the surfactant, and X-ray diffraction (XRD) and transmission electron microscopy (TEM) analyses confirm the structure and morphology of the polymer-capped Fe 3 o4 /Ag nanoparticles.
Journal ArticleDOI
Shape-Controlled Synthesis of Dumbbell-like Pt–Fe3O4–MnOx Nanoparticles by Governing the Reaction Kinetics
TL;DR: A facile one-pot approach for the controlled synthesis of dumbbell-like Pt–Fe3O4–MnOx and dendritic Pt–MmOx NPs and an enhancement of specific activity toward the oxygen reduction reaction owing to the compressive-strain effect exerted on the Pt lattice is reported.
Journal ArticleDOI
Photochemical Decoration of Silver Nanocrystals on Magnetic MnFe 2 O 4 Nanoparticles and Their Applications in Antibacterial Agents and SERS-Based Detection
Le Thanh Huy,Le Thanh Huy,Le Thi Tam,Tran Van Son,Nguyen Duy Cuong,Man Hoai Nam,Le Khanh Vinh,Tran Quang Huy,Duc-The Ngo,Vu Ngoc Phan,Anh-Tuan Le +10 more
TL;DR: In this article, a two-step chemical process was used to synthesize multifunctional nanocomposites consisting of silver nanoparticles and manganese ferrite nanoparticles (Ag-MnFe2O4).
Journal ArticleDOI
Formation of composite dimers consisting of Ag2S and hollow structured Pd nanoparticles
TL;DR: In this article, a small amount of [AD]PO4 was used to synthesize core-shell Ag@Ag-Pd nanoparticles with an average size of 28.2 nm, which serve as templates for the subsequent synthesis of composite dimers.
References
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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.
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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.