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  • metallic
  • The results highlight the importance of the modifications ported to the well-known one-phase synthetic reactions to obtain a clear lack, even after a storage of six months, of any irreversible aggregation that has always characterized chain thiophene-protected metallic nanoparticles. (hindawi.com)
  • Metallic nanoparticles (NPs) have become essential tools for many chemical processes employed in industry and academia during recent decades. (rsc.org)
  • Helium ion microscopy (HIM) reveals the formation of spherical nanoparticles with well-defined size and X-ray photoelectron spectroscopy (XPS) confirms their metallic nature. (beilstein-journals.org)
  • In its elemental form, copper has a red-orange metallic luster appearance. (americanelements.com)
  • catalytic
  • Preservation from easy aerobic Cu(0) oxidation in Cu nanoparticles (NPs) is of interest for electronic, sensing, optical and catalytic properties. (rsc.org)
  • Metal nanoparticles possessing a high density of atomic steps and edge sites provide an increased population of undercoordinated surface atoms, which can enhance the catalytic activity of these materials compared to low-index faceted or bulk materials. (rsc.org)
  • Palladium nanoparticles by electrospinning from poly(acrylonitrile-co-acrylic acid)-PdCl2 solutions: relations between preparation conditions, particle size, and catalytic activity," Macromolecules , vol. 37, no. 5, pp. 1787-1792, 2004. (hindawi.com)
  • Cu2O
  • Two types of nanoparticle catalyst have been tested, Cu2O and CuO, where CuO has a smaller crystallite and particle size than Cu2O. (bibsys.no)
  • precursor
  • The approach is based on producing rough and discontinuous electrospun nanofibers from a precursor based on copper acetate salt and polyvinyl alcohol (PVA) polymer. (hindawi.com)
  • The precursor material was deposited by dipping the surfaces alternately in ethanolic solutions of copper(II) acetate and oxalic acid with intermediate thorough rinsing steps. (beilstein-journals.org)
  • Continued irradiation after depletion of oxalate does not lead to further particle growth giving evidence that nanoparticle formation is primarily controlled by the available amount of precursor. (beilstein-journals.org)
  • on a silica support during the reduction by H2 of homogeneous copper phyllosilicate platelets, as a prototype precursor for a coprecipitated catalyst. (uu.nl)
  • The plate-like structure of the precursor restricted the diffusion of copper and the autocatalytic reduction limited the probability for secondary nucleation. (uu.nl)
  • The combination of a uniform size of precursor particles and the autocatalytic reduction thus offers means to synthesize nanoparticles with well-defined sizes in large amounts. (uu.nl)
  • selectivity
  • Copper catalyst for the hydrogenation of ester to alcohol is a catalyst commonly used due to its high selectivity and conversion for alcohol. (bibsys.no)
  • The reduction of various nitroaromatic compounds into their corresponding amines is achieved by zeolite-supported copper nanoparticles with 2-propanol as a sustainable reducing agent with good selectivity and excellent yields. (wiley.com)
  • Because of their bimetallic surface composition, these terraced nanoparticles exhibit increased selectivity to acetaldehyde in gas phase ethanol oxidation. (rsc.org)
  • Nanomaterials
  • A review of the use of engineered nanomaterials to suppress plant disease and enhance crop yield," Journal of Nanoparticle Research , vol. 17, no. 2, pp. 1-21, 2015. (hindawi.com)
  • In this work, we apply a spICP-MS method for the detection of engineered copper nanomaterials in colloidal extracts from natural soil samples. (mdpi.com)
  • In this way, in situ observations made by electron microscopy provide mechanistic and kinetic insights into the formation of supported nanoparticles, essential for the rational design of nanomaterials. (uu.nl)
  • Properties
  • Cu T6SH nanoparticles have been investigated by UV-Visible (UV-Vis) and Fourier transmission infrared (FTIR) spectroscopes to characterize the alkylthiophenes monolayer conformations and the particles optoelectronic properties. (hindawi.com)
  • Nanoparticles are very interesting for the quantum effect by which their properties are tunable by the particle nanosize and surface chemical-physical characteristics [ 6 ]. (hindawi.com)
  • Because of the expected marked electronic and optical properties of copper nanoparticles, there has been an increased interest in the preparation of stable monolayer-protected copper nanoparticles. (hindawi.com)
  • Carbon Coated Copper Nanoparticles due to their excellent physicals and chemiclas properties and low cost of perparation,have been of great interest. (nanoshel.com)
  • PDF Copper nanoparticles with different structural properties and effective biological effects may be fabricated using new green protocols. (thestageacademy.com)
  • Pure aluminum is soft and lacks strength, but alloyed with small amounts of copper , magnesium , silicon , manganese , or other elements it imparts a variety of useful properties. (americanelements.com)
  • reduction
  • Then copper nanoparticles (Cu NPs) were loaded onto the surface of HNTs by complexation and reduction (Cu NPs@HNTs). (rsc.org)
  • Specifically, time-lapsed TEM image series acquired of the material during the reduction process provide a direct visualization of the growth dynamics of an ensemble of individual nanoparticles and enable a quantitative evaluation of the nucleation and growth of the nanoparticles. (uu.nl)
  • This quantitative information is compared with kinetic models and found to be best described by a nucleation-and-growth scenario involving autocatalytic reduction of the copper phyllosilicate followed by diffusion-limited or reaction-limited growth of the copper nanoparticles. (uu.nl)
  • Diameter
  • The effect of the diameter of Bi-Sn alloy particles on the bonding strength of hybrid joints formed between SiC chips and direct-bonded copper (DBC) plates using a Cu nanoparticles/Bi-Sn solder was studied. (springer.com)
  • methyl
  • The focus in this work is to see the performance of nanoparticle copper catalyst, for hydrogenolysis of methyl formate at different temperature. (bibsys.no)
  • Carbon Coated Copper Nanoparticles (about 6 nm) embedded in polyvinyl methyl ketone ¯lms exhibit a noticeable inhibitory efect on the growth of microorganisms. (nanoshel.com)
  • growth
  • the modification of the fabric by copper nanoparticles leads to complete destruction of Epidermophyton colonies and significantly sup presses growth of Candida colonies, which makes it possible to apply such fabric in treatment of fungal diseases and in antiseptic treatment and healing of septic wounds. (nanoshel.com)
  • Exposure to CuO nanoparticles down-regulated the expression of vascular endothelial growth factor (VEGF) and VEGF receptor in endothelial cells sorted by Fluorescence Activated Cell Sorter (FACS). (ingentaconnect.com)
  • The growth mechanisms and kinetics of nanoparticles from solid precursors are, however, often poorly described. (uu.nl)
  • high
  • However, a limited progress has been obtained because of the high instability of copper nanoparticles. (hindawi.com)
  • Therefore, copper is mostly preferred for fabricating highly conductive Cu patterns on a plastic substrate by inkjet printing because of its low cost and high conductivity. (nanoshel.com)
  • bulk
  • In the present study, fish Labeo rohita were exposed to 20, 50 and 100 µg/L of both Cu NPs and copper sulphate (CuSO4, bulk copper) for 24 h and hematological profiles were estimated. (igi-global.com)