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 Janus plasmonic-magnetic, star-sphere nanoparticles, and their application in SERS detection
Javier Reguera,Dorleta Jimenez de Aberasturi,Naomi Winckelmans,Judith Langer,Sara Bals,Luis M. Liz-Marzán +5 more
TL;DR: The synthesis of Janus nanoparticles comprising iron oxide nanospheres and gold nanostars is reported, through two consecutive seed-mediated-growth steps, showing their clear separation in a Janus morphology.
Journal ArticleDOI
Catalyst design using an inverse strategy: From mechanistic studies on inverted model catalysts to applications of oxide-coated metal nanoparticles
Jing Zhang,J. Will Medlin +1 more
TL;DR: In inverted model catalysts, metal surfaces or nanoparticles are covered by oxide layers ranging from submonolayer patches to continuous films with thickness at the nanometer scale as discussed by the authors.
Emerging trends in nanobiotechnology.
TL;DR: This review focuses on the emerging trends in the development of wide array of nanomaterials for biological applications and mainly the QDs - their properties, toxicity studies and some of their biological applications like labeling of cellular structures/molecules, cell uptake, biocompatibility, bioconjugation etc.
Journal ArticleDOI
Multifunctional Magnetic Silver Nanoshells with Sandwichlike Nanostructures
TL;DR: In this article, a novel multifunctional magnetic Ag nanoshell with sandwich-like nanostructure is presented, which is composed of a yolk-egg-like magnetic silica core and a continuous Ag nanosahell coating.
Journal ArticleDOI
Thiol-modified magnetic polypyrrole nanocomposite: An effective adsorbent for the adsorption of silver ions from aqueous solution and subsequent water disinfection by silver-laden nanocomposite
Thembisile Mahlangu,Thembisile Mahlangu,Raghunath Das,Luther King Abia,Maurice S. Onyango,Suprakas Sinha Ray,Suprakas Sinha Ray,Arjun Maity,Arjun Maity +8 more
TL;DR: In this article, a magnetic nanocomposite (NC), Fe3O4@PPy-MAA, was synthesised via in situ oxidative polymerisation of the pyrrole monomer in a thioglycolic acid (mercaptoacetic acid) solution (as a dopant), in the presence of iron oxide (Fe3O 4).
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.