Journal ArticleDOI
Solvothermal Synthesis of Tunable Electroactive Magnetite Nanorods by Controlling the Side Reaction
TLDR
A solvothermal process was designed to synthesize magnetite (Fe3O4) nanorods using iron pentacarbonyl (Fe(CO)5), oleic acid, and hexadecylamine as raw materials as discussed by the authors.Abstract:
A solvothermal process was designed to synthesize magnetite (Fe3O4) nanorods using iron pentacarbonyl (Fe(CO)5), oleic acid, and hexadecylamine as raw materials. In the preparation process, Fe(CO)5 was first decomposed and oxidized to form FeO. Meanwhile, Fe(CO)5 reacted with oleic acid to form iron oleate. In the system water derived from the reaction between oleic acid and hexadecylamine resulted in the hydrolysis of iron oleate to form the initial Fe3O4 nanorods. In the following process, the dissolution of FeO and decomposition of residual Fe(CO)5 as well as the hydrolysis of iron oleate provided the source for the growth of Fe3O4 nanorods, which led to the enlargement of the particles with time. By adjusting the reaction time or the amount of the added hexadecylamine, the length of uniform nanorods could be tuned from 63 to 140 nm. Furthermore, the as-prepared Fe3O4 nanorods showed excellent performance in electrochemical property and exhibited different magnetic property from spherical nanoparticles...read more
Citations
More filters
Journal ArticleDOI
Design Strategies for Shape-Controlled Magnetic Iron Oxide Nanoparticles
Alejandro G. Roca,Lucía Gutiérrez,Lucía Gutiérrez,Helena Gavilán,Maria Eugênia Fortes Brollo,Sabino Veintemillas-Verdaguer,María del Puerto Morales +6 more
TL;DR: This review is focused on the synthesis routes for the production of uniform anisometric magnetite/maghemite nanoparticles with different morphologies like cubes, rods, disks, flowers and many others, such as hollow spheres, worms, stars or tetrapods.
Journal ArticleDOI
One-pot synthesis of magnetite nanorods/graphene composites and its catalytic activity toward electrochemical detection of dopamine.
J. Salamon,Yesupatham Sathishkumar,K. Ramachandran,Yang Soo Lee,Dong Jin Yoo,Ae Rhan Kim,G. Gnana kumar +6 more
TL;DR: The constructed rGO/Fe3O4/GCE sensor exhibited excellent electrocatalytic activity toward the electrooxidation of dopamine (DA) with a quick response time of 6s, a wide linear range between 0.01 and 100, high sensitivity and practical applicability in the quantification of DA in urine samples with an excellent recovery rate.
Journal ArticleDOI
Tunable High Aspect Ratio Iron Oxide Nanorods for Enhanced Hyperthermia
Raja Das,Javier Alonso,Javier Alonso,Zohreh Nemati Porshokouh,Vijaysankar Kalappattil,David Torres,Manh-Huong Phan,Eneko Garaio,José Ángel García,José Ángel García,Jose Luis Sanchez Llamazares,Hariharan Srikanth +11 more
TL;DR: Considering the proven advantages of high aspect ratio one-dimensional (1D) Fe3O4 nanostructures over their spherical and cubic counterparts, such as larger surface area, multisegmented capabilities, enhanced blood circulation time, and prolonged retention in tumors, this paper proposed a novel approach that utilizes this 1D nanostructure for enhanced hyperthermia.
Journal ArticleDOI
Iron oxide nanorods as high-performance magnetic resonance imaging contrast agents.
TL;DR: An efficient magnetic resonance imaging (MRI) contrast agent with a high R2 relaxivity value is achieved by controlling the shape of iron oxide to rod like morphology with a length of 30-70 nm and diameter of 4-12 nm.
Journal ArticleDOI
Magnetic nanoparticles and clusters for magnetic hyperthermia: optimizing their heat performance and developing combinatorial therapies to tackle cancer.
Helena Gavilán,Sahitya Kumar Avugadda,Tamara Fernandez-Cabada,Nisarg Soni,Marco Cassani,Binh T. Mai,Roy W. Chantrell,Teresa Pellegrino +7 more
TL;DR: In this paper, the authors present an overview of magnetic nanoparticles and their assemblies produced via different synthetic routes, focusing on which MNP features have allowed unprecedented heating efficiency levels to be achieved in MHT and highlighting nanoplatforms that prevent magnetic heat loss in the intracellular environment.
References
More filters
Journal ArticleDOI
Materials for electrochemical capacitors
TL;DR: This work has shown that combination of pseudo-capacitive nanomaterials, including oxides, nitrides and polymers, with the latest generation of nanostructured lithium electrodes has brought the energy density of electrochemical capacitors closer to that of batteries.
Journal ArticleDOI
One‐Dimensional Nanostructures: Synthesis, Characterization, and Applications
Younan Xia,Peidong Yang,Yugang Sun,Yiying Wu,Brian Mayers,Byron D. Gates,Yadong Yin,Franklin Kim,Haoquan Yan +8 more
TL;DR: A comprehensive review of 1D nanostructures can be found in this article, where the authors provide a comprehensive overview of current research activities that concentrate on one-dimensional (1D) nanostructure (wires, rods, belts and tubes).
Journal ArticleDOI
Magnetic Iron Oxide Nanoparticles: Synthesis, Stabilization, Vectorization, Physicochemical Characterizations, and Biological Applications
Sophie Laurent,Delphine Forge,Marc Port,Alain Roch,Caroline Robic,Luce Vander Elst,Robert N. Muller +6 more
TL;DR: Practical Interests of Magnetic NuclearRelaxation for the Characterization of Superparamagnetic Colloid, and Use of Nanoparticles as Contrast Agents forMRI20825.
Journal ArticleDOI
Analysis of XPS spectra of Fe2+ and Fe3+ ions in oxide materials
Toru Yamashita,Peter C. Hayes +1 more
TL;DR: In this paper, the peak positions and peak shape parameters of Fe 3p for Fe2+ and Fe3+ were derived from the XPS spectra of the standard samples of 2FeO·SiO2 and Fe2O3, respectively.
Journal ArticleDOI
Calculated Absorption and Scattering Properties of Gold Nanoparticles of Different Size, Shape, and Composition: Applications in Biological Imaging and Biomedicine
TL;DR: While nanorods with a higher aspect ratio along with a smaller effective radius are the best photoabsorbing nanoparticles, the highest scattering contrast for imaging applications is obtained from nanorod of high aspect ratio with a larger effective radius.