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  • selenium nanoparticles
  • The European Food Safety Authority (EFSA) Panel on Food Contact Materials, Enzymes, Flavorings, and Processing Aids evaluated food contact material (FCM) Substance No. 1070, which incorporates selenium nanoparticles into the adhesive middle layer of multilayer laminates with an outside polyethylene terephthalate (PET) layer and an inner polyolefin (food contact) layer. (environmental-expert.com)
  • The white-rot fungus Phanerochaete chrysosporium has also been demonstrated to be able to synthesize elemental selenium nanoparticles. (wikipedia.org)
  • suspensions
  • The time dependent stability of these polymer -coated aqueous suspensions of magnetite was then analysed using DLS to observe the change in the hydrodynamic diameter as a function of time in both PBS and fetal bovine serum (FBS). (rsc.org)
  • ligands
  • This newly synthesized polymer is then compared to more traditional monofunctional catechol based ligands of similar molecular weights (∼5000 g mol −1 ), by testing their effectiveness at stabilizing magnetite nanoparticles (∼6.5 nm in diameter) in biological media. (rsc.org)
  • These Janus nanoparticles were then functionalized by the addition of various ligands with specific affinity for either the iron or silver. (wikipedia.org)
  • polymer
  • The materials obtained were compared with those obtained by the coating of magnetite nanocrystals produced beforehand with the same polymer. (mdpi.com)
  • A novel tri-nitroDOPA terminated polymer based ligand has been developed for the stabilization of magnetite nanoparticles . (rsc.org)
  • Composites
  • The inhibition effect of AA-Na/magnetite composites on steel corrosion in 1 M HCl solution was investigated using potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS). (mdpi.com)
  • precipitation
  • Magnetite can also be prepared by the chemical co-precipitation in presence of ammonia, which consist in a mixture of a solution 0.1 M of FeCl3·6H2O and FeCl2·4H2O with mechanic agitation of about 2000 rpm. (wikipedia.org)
  • multifunctional
  • In comparison with seeded growth or use of molecular cross-linkers to form multifunctional nanoparticles, heteroaggregation approaches are potentially quite general, simple, and efficient. (mit.edu)
  • Recently his group has been focused on designed fabrication of multifunctional nanostructured materials based on uniform-sized nanoparticles and their bio-medical applications. (wikipedia.org)
  • temperature
  • Biocompatible and stimuli-responsive copolymer -capped Fe 3 O 4 nanoparticles (NPs) were studied at the air/water interface, below and above their lower critical solution temperature (LCST). (rsc.org)
  • Thermophoresis induces nanoparticle migration from warmer to colder region (in opposite direction of the temperature gradient), making a non-uniform nanoparticle volume fraction distribution. (wikipedia.org)
  • a lower temperature resulted in larger nanoparticles while higher temperatures produced smaller nanoparticles. (wikipedia.org)
  • size
  • Magnetite nanoparticles in the size ranging from 2 nm to 20 nm with a narrow size distribution are obtained with the invention. (google.com)
  • The solvothermal method is a way to obtain magnetite nanoparticles with uniformity in shape and size, good dispersibility and functionalized surface. (springer.com)
  • By this method, nanoparticles were obtained with an average size of 17 nm in a narrow size distribution, uniformity of morphology, high crystallinity and functionalized surface. (springer.com)
  • However, these methods using only a metal precursor and another chemical compound for the functions of solvent, reducing agent and stabilizer to obtain nanoparticles smaller than 20 nm, with uniformity of size and shape and functionalized surface are not reported. (springer.com)
  • Here we described a simple method to produce magnetite nanoparticles with size smaller than 20 nm, in a narrow size distribution, with acid oleic-coated surface by solvothermal method using Fe(acac) 3 as metal precursor and oleic acid for all other functions (solvent, reducing agent and surfactant). (springer.com)
  • The level of non-uniformity is completely depend on thermal boundary conditions, the nanoparticle size, shape, and material. (wikipedia.org)
  • A nanoparticle is defined as having one dimension 100 nm or less in size. (wikipedia.org)
  • The authors concluded that silver nanoparticle size increased as the pH of the ion solution decreased. (wikipedia.org)
  • reaction
  • Silica-coated magnetite NPs were prepared by sol-gel reaction, subsequently coated with 3-aminopropyltriethoxysilane (APTES) via silanization reaction, and then were activated with 2,4,6-trichloro-1,3,5-triazine (TCT) and covalently immobilized with bovine serum albumin (BSA). (hindawi.com)
  • This is possible due the constant liberation of the acetylacetone formed in the reaction, which favors the formation of the oleate, the responsible for the conditions required to obtain magnetite nanoparticles smaller than 20 nm. (springer.com)
  • The interest of cuprospinel arises in that magnetite is a widely used catalyst for many industrial chemical reactions, such as the Fischer-Tropsch process, the Haber-Bosch process and the water-gas shift reaction. (wikipedia.org)
  • Brownian
  • Since the nanoparticles are very small ( 100 nm), Brownian and thermophoretic diffusivities are the main slip mechanisms in nanofluids, as Buongiorno declared. (wikipedia.org)
  • surfactant
  • 20 ] used ethylene glycol, hydrazine and different stabilizers to obtain nanoparticles with average sizes between 8 and 11 nm, depending on the surfactant. (springer.com)
  • properties
  • Movements of nanoparticles has significant impact on rheological and thermophysical properties of the nanofluids. (wikipedia.org)
  • It has been shown that doping magnetite with other elements gives it different chemical and physical properties, these different properties sometimes allow the catalyst to work more efficiently. (wikipedia.org)
  • As such, cuprospinel is essentially magnetite doped with copper and this enhances magnetite's water gas shift properties as a heterogeneous catalyst. (wikipedia.org)
  • applications
  • Affimer binders have been produced to a large number of targets including ubiquitin chains, immunoglobulins, C-reactive protein, interleukin-8, complement C3 and magnetite nanoparticles for use in a number of molecular recognition applications. (wikipedia.org)
  • These applications require coating of the nanoparticles by agents such as long-chain fatty acids, alkyl-substituted amines and diols. (wikipedia.org)
  • involves
  • Masking, as the name suggests, involves the protection of one side of a nanoparticle followed by the modification of the unprotected side and the removal of the protection. (wikipedia.org)
  • The phase interface method involves trapping homogeneous nanoparticles at the interface of two immiscible phases. (wikipedia.org)
  • spinel
  • Considerable efforts has been devoted towards controlling the particle formation process of magnetite nanoparticles due to the challenging and complex chemistry reactions involved in the phase transformations prior to the formation of the magnetite spinel structure. (wikipedia.org)
  • As a member of the spinel group, magnetite can form solid solutions with similarly structured minerals, including ulvospinel (Fe2TiO4), hercynite (FeAl2O4) and chromite (FeCr2O4). (wikipedia.org)
  • magnetic materials
  • While many traditional magnetic materials, such as magnetite, are also semiconductors (magnetite is a semimetal semiconductor with bandgap 0.14 eV), materials scientists generally predict that magnetic semiconductors will only find widespread use if they are similar to well-developed semiconductor materials. (wikipedia.org)
  • typically
  • Magnetite typically carries the dominant magnetic signature in rocks, and so it has been a critical tool in paleomagnetism, a science important in understanding plate tectonics and as historic data for magnetohydrodynamics and other scientific fields. (wikipedia.org)
  • chemical
  • Magnetite can also be prepared by the chemical co-precipitation in presence of ammonia, which consist in a mixture of a solution 0.1 M of FeCl3·6H2O and FeCl2·4H2O with mechanic agitation of about 2000 rpm. (wikipedia.org)
  • materials
  • Nanoparticles are introduced in many materials composition to enhance its performance. (sbq.org.br)
  • Recently his group has been focused on designed fabrication of multifunctional nanostructured materials based on uniform-sized nanoparticles and their bio-medical applications. (wikipedia.org)
  • structure
  • The spreading of a nanofluid droplet is enhanced by the solid-like ordering structure of nanoparticles assembled near the contact line by diffusion, which gives rise to a structural disjoining pressure in the vicinity of the contact line. (wikipedia.org)
  • group
  • His group reported on the fabrication of monodisperse magnetite nanoparticles immobilized with uniform pore-sized mesoporous silica spheres for simultaneous MRI, fluorescence imaging, and drug delivery. (wikipedia.org)
  • water
  • Biocompatible and stimuli-responsive copolymer -capped Fe 3 O 4 nanoparticles (NPs) were studied at the air/water interface, below and above their lower critical solution temperature (LCST). (rsc.org)
  • considered the effect of an external magnetic field on the convective heat transfer coefficient of water-based magnetite nanofluid experimentally under laminar flow regime. (wikipedia.org)
  • Under anaerobic conditions, ferrous hydroxide (Fe(OH)2) can be oxidized by water to form magnetite and molecular hydrogen. (wikipedia.org)
  • presence
  • In the presence of mineralizers such as 0.1M HI or 2M NH4Cl and at 0.207 MPa at 416-800 °C, magnetite grew as crytals whose shapes were a combination of rhombic-dodechahedra forms. (wikipedia.org)
  • alternative
  • With the advent of modern nanotechnology in the 1980s, fungi have remained important by providing a greener alternative to chemically synthesized nanoparticle. (wikipedia.org)
  • shape
  • This lab is designed to help students understand how nanoparticles may be more effective catalysts by investigating how the surface area-to-volume ratio of a substance is affected as its shape changes. (nisenet.com)
  • solution
  • heating this solution at 70 °C, and immediately the speed is elevated to 7500 rpm and adding quickly a solution of NH4OH (10 volume %), immediately a dark precipitate will be formed, which consists of nanoparticles of magnetite. (wikipedia.org)
  • Titanomagnetite, also known as titaniferous magnetite, is a solid solution between magnetite and ulvospinel that crystallizes in many mafic igneous rocks. (wikipedia.org)
  • surface
  • Huang J, Yang G, Meng W, Wu L, Zhu A, Jiao X (2010) An electrochemical impedimetric immunosensor for label-free detection of Campylobacter jejuni in diarrhea patients' stool based on O-carboxymethylchitosan surface modified Fe 3 O 4 nanoparticles. (springer.com)