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
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Exploring the Limitations of the Use of Competing Reducers to Control the Morphology and Composition of Pt and PtCo Nanocrystals
TL;DR: In this article, size and shape-controlled synthesis of platinum nanocrystals (Pt NCs) was explored by systematically comparing the differential reducing performance of two competing reducing agents in a one-pot synthesis: hexadecanediol, a weak reducer, and metallic cobalt or superhydride, stronger reducers of Pt.
Journal ArticleDOI
Colloidal Anisotropic ZnO-Fe@FexOy Nanoarchitectures with Interface-Mediated Exchange-Bias and Band-Edge Ultraviolet Fluorescence
Athanasia Kostopoulou,Athanasia Kostopoulou,Franck Thétiot,Ioannis Tsiaoussis,Maria Androulidaki,P. Davide Cozzoli,Alexandros Lappas +6 more
TL;DR: In this article, a colloidal seeded-growth method was used to synthesize hybrid nanocrystals (HNCs) based on ZnO nanorods (NRs) decorated with magnetic Fe-based domains.
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Molecular Camouflage: Making Use of Protecting Groups To Control the Self-Assembly of Inorganic Janus Particles onto Metal- Chalcogenide Nanotubes by Pearson Hardness**
Jugal Kishore Sahoo,Muhammad Nawaz Tahir,Faegheh Hoshyargar,Bahar Nakhjavan,Robert Branscheid,Ute Kolb,Wolfgang Tremel +6 more
TL;DR: Hard and soft: Binding of inorganic Pt@Fe3O4 Janus particles to WS2 nanotubes through their Pt or Fe 3O4 domains is governed by the difference in Pearson hardness.
Journal ArticleDOI
Sustainable and scalable in-situ fabrication of Au nanoparticles and Fe3O4 hybrids as highly efficient electrocatalysts for the enzyme-free sensing of H2O2 in neutral and basic solutions
TL;DR: In this paper, the authors established a one-pot fabrication of Au nanoparticles and Fe3O4 hybrids (Au/Fe 3O4) through a sustainable and scalable protocol involving the redox reduction between chloroauric acid and ferrous sulfate at room temperature.
Journal ArticleDOI
Multicomponent nanoarchitectures for the design of optical sensing and diagnostic tools
Thanh-Dinh Nguyen,Thai-Hoa Tran +1 more
TL;DR: This review highlights recent advances in the fabrication of multicomponent organic-conjugated inorganic nanoarchitectures and their potential uses in optical sensing and diagnostic tools.
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.