High rate flame synthesis of highly crystalline iron oxide nanorods

Merchan-Merchan, Wilson; Saveliev, Alexei V.; Taylor, Aaron

doi:10.1088/0957-4484/19/12/125605

Cited by 29 publications

(15 citation statements)

References 28 publications

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“…Hydrogen and oxygen were generateda ccording to Equations (2) and (3): Hydrogen and oxygen were generateda ccording to Equations (2) and (3):…”

Section: Resultsmentioning

confidence: 99%

“…Morphology-dependent (nanorods, [1][2][3] nanowires, [4] nanotubes, [5] and nanoribbons [6] )m etal/semiconductor [7,8] nanostructures have significant applications, as they are of interest for catalysis, field emission, and other areas of tremendous industrial importance.T heir shape-and size-dependent optical, electrical, catalytic, and magnetic properties are applicable in energy storage, and optical and photo-electrochemical devices, especially due to their large surface-to-volume ratio. [9][10][11] Renewable energy sources, [12][13][14][15][16] in particular those based on hydrogen as af uel, are widely proclaimed asakey solution to the energy needs for future generations.H ydrogen can potentially be applied in fuel cells, battery devices,p owerg eneration, and as an enginef uel.…”

Section: Introductionmentioning

confidence: 99%

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Cu‐Based Nanocomposites as Multifunctional Catalysts

Kumar

Rao²,

Saha

et al. 2015

ChemPhysChem

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Herein, we report the synthesis of Cu/Cu2 O nanocomposites by a one-step hydrothermal process at 180 °C, for which the resulting morphology is dependent on the hydrothermal reaction time (24, 72, and 120 h). With a longer reaction time of 120 h, a rod-shape morphology is obtained, whereas at 72 and 24 h assemblies of nanoparticles are obtained. The rod-shaped (120 h) particles of the Cu/Cu2 O nanocomposites show a much higher efficiency (6.3 times) than the agglomerates and 2.5 times more than the assemblies of nanoparticles for the hydrogen-evolution reaction. During the oxygen-evolution reaction, the nanorods produce a current that is 5.2 and 3.7 times higher than that produced by the agglomerated and assembled nanoparticles, respectively. The electrocatalysts are shown to be highly stable for over 50 cycles. As catalysts for organic synthesis, a 100 % yield is achieved in the Sonogashira cross-coupling reaction with the nanorods, which is higher than with the other nanocomposite particles. This result demonstrates the significant enhancement of yield obtained with the nanorods for cross-coupling reactions.

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“…Hydrogen and oxygen were generateda ccording to Equations (2) and (3): Hydrogen and oxygen were generateda ccording to Equations (2) and (3):…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cu‐Based Nanocomposites as Multifunctional Catalysts

Kumar

Rao²,

Saha

et al. 2015

ChemPhysChem

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“…Among these methods, solvothermal process has the advantages of mild synthetic condition, simple manipulation and large scale-up production. More importantly, the morphology and size of the prepared Fe 3 O 4 NPs could be adjusted in a solvothermal approach, so their properties could be controlled to some extent by this approach due to size and shape effects [11,12].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Surface Modification of Monodisperse Fe3O4 Nanoparticles

Hu¹,

Qin²,

Li³

et al. 2016

Proceedings of the 2nd Annual International Conference on Advanced Material Engineering (AME 2016)

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Abstract. Monodisperse Fe 3 O 4 Nano particles have been successfully synthesized by solvothermal method using water and ethylene glycol as solvents, and their sizes could be controlled by changing the ratio of water to ethylene glycol. Subsequent surface modification of Fe 3 O 4 had been carried out using tetraethyl orthosilicate and 3-Aminopropyl triethoxysilane as modification agents. The magnetic materials have been characterized by scanning electron microscopy, X-ray diffraction and Fourier-transform infrared spectroscopy. It was verified that SiO 2 layers have been coated on the surface of Fe 3 O 4 and NH 2 -groups have been grafted on the spherical surface of magnetic materials.

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“…Most recently, iron oxide nanorods and MoO 2 nanowires were grown in CDF flames by Merchan-Merchan et al [19,20] by inserting their respective metal plates into the flames. Nanowires grow on the cold plates in a CVD process, but they must be placed at a precise location for the desired 1D nanostructure growth morphology [12,19].…”

Section: Introductionmentioning

confidence: 99%

Flame Aerosol Synthesis of Freestanding ZnO Nanorods

Gandikota¹,

Xing²

2014

ANP

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ZnO can be made into many nanostructures that have unique properties for advanced applications, such as piezoelectric and pyroelectric materials. ZnOnanorod is one of the nanostructures that possess advanced properties. This paper reports a gas phase flame process to continuously synthesize aerosols of ZnOnanorods in large quantities. Unlike previous work, our process shows that pure ZnOnanorods can be made in a freestanding form rather than growing on a substrate surface. It was found that the ZnOnanorods preferentially grow in the thermodynamically stable direction [001] in the gas phase with different aspect ratios, depending on flame process conditions. The ZnOnanorod aerosols are highly crystalline and have a hexagonal geometry. Raman and photoluminescence spectroscopic studies showed that there are no structural defects in the nanorods, which have energy band gap of 3.27 eV in the near UV region. It was demonstrated that the gas phase flame reactor can provide a convenient means for continuous production of highly pure aerosols of ZnOnanorods.

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High rate flame synthesis of highly crystalline iron oxide nanorods

Cited by 29 publications

References 28 publications

Cu‐Based Nanocomposites as Multifunctional Catalysts

Cu‐Based Nanocomposites as Multifunctional Catalysts

Preparation and Surface Modification of Monodisperse Fe3O4 Nanoparticles

Flame Aerosol Synthesis of Freestanding ZnO Nanorods

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