Results 141 to 150 of about 4,898 (179)
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High-Performance Osmium Nanoparticle Electrocatalyst for Direct Borohydride PEM Fuel Cell Anodes
Journal of the Electrochemical Society, 2008Carbonaceous direct fuel cells are hampered by sluggish anode kinetics associated with CO poisoning and therefore typically require a high load of costly Pt-based electrocatalysts. Direct borohydride fuel cells (DBFCs) have an inherent advantage due to the absence of CO and are characterized by high thermodynamic specific energy (9.3 Wh g -1 NaBH4 ...
Vincent W. S. Lam, Elöd L. Gyenge
exaly +2 more sources
Magnetic Nanoparticle Supported Osmium for Olefin Dihydroxylation [PDF]
Synfacts, 2011 openaire +2 more sources
Metallic osmium and ruthenium nanoparticles for CO oxidation
Journal of Organometallic Chemistry, 2009Abstract Supported metallic catalysts were prepared from pyrolysis of the organometallic clusters RuOs3(CO)13(μ-H)2, Os3(CO)10(μ-AuPPh3)2, Os3(CO)12, Ru3(CO)12 and [Ru(CO)4]n, on either silica or titania, and their catalytic performance for CO oxidation has been assessed against a supported catalyst prepared from RuCl3.
Li, C., Leong, W.K., Zhong, Z.
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Fluoro-tagged osmium and iridium nanoparticles in oxidation reactions
Tetrahedron, 2018Abstract Osmium and iridium metal nanoparticles were supported on a fluorous organic-inorganic hybrid material prepared by the sol-gel process. Moreover, we also found that the thermolysis of the Ir4(CO)12 cluster in simply diphenylether also gave Ir(0) nanoparticles. All the materials were studied as catalysts in oxidation processes.
Lynay Santacruz +4 more
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ChemSusChem, 2021
AbstractFor several decades, much attention has been paid to thylakoid membranes (TMs) as photocatalysts for converting solar light to electricity. Despite extensive research, current technology provides only limited photocurrents. Here, a novel method based on TM‐composite material was developed for achieving high photocurrent.
Jinhwan, Lee +3 more
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AbstractFor several decades, much attention has been paid to thylakoid membranes (TMs) as photocatalysts for converting solar light to electricity. Despite extensive research, current technology provides only limited photocurrents. Here, a novel method based on TM‐composite material was developed for achieving high photocurrent.
Jinhwan, Lee +3 more
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A Heparinase Sensor Based on a Ternary System of Hg2+–Heparin–Osmium Nanoparticles
Analytical Chemistry, 2019A visual assay for the detection of heparinase was developed on the basis of a ternary system of Hg2+-heparin-osmium nanoparticles (OsNPs). First, heparin-capped OsNPs (heparin-OsNPs) were synthesized by a facile reduction method using heparin as the protecting/stabilizing agent. The oxidase-like activity of heparin-OsNPs, however, turned out to be low,
Shao-Bin He +8 more
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Polymer nanoparticles with an embedded phosphorescent osmium(ii) complex for cell imaging
Journal of Materials Chemistry, 2011Herein, we report the development of a simple and effective method for embedding a hydrophobic phosphorescent heavy-metal complex into hydrophilic nanoparticles by emulsion polymerization. An osmium(II) complex, [Os(bpy)2(L^L)]2+(PF6−)2, has been synthesized, and its structure has been confirmed by single-crystal X-ray analysis.
Tianshe Yang +7 more
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The Journal of Physical Chemistry C, 2009
The surface−cluster interactions between four classes of clusters, viz., (i) those which may be expected to interact directly via the cluster core, (ii) those with a spacer carrying a free thiol functional group, (iii) those with a spacer carrying a free alcohol functional group, and (iv) those with a spacer carrying a free carboxylic acid functional ...
Li, C., Fan, W.Y., Leong, W.K.
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The surface−cluster interactions between four classes of clusters, viz., (i) those which may be expected to interact directly via the cluster core, (ii) those with a spacer carrying a free thiol functional group, (iii) those with a spacer carrying a free alcohol functional group, and (iv) those with a spacer carrying a free carboxylic acid functional ...
Li, C., Fan, W.Y., Leong, W.K.
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ChemCatChem, 2017
AbstractBimetallic NiIr4 and NiOs4 alloy nanoparticles are prepared and studied with regard to their performance in catalytic hydrogenation reactions. NiIr4 and NiOs4 nanoparticles are obtained by oleylamine‐driven reduction and exhibit mean diameters of (8.9±1.3) and (6.8±1.4) nm at low agglomeration.
Egeberg, Alexander +6 more
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AbstractBimetallic NiIr4 and NiOs4 alloy nanoparticles are prepared and studied with regard to their performance in catalytic hydrogenation reactions. NiIr4 and NiOs4 nanoparticles are obtained by oleylamine‐driven reduction and exhibit mean diameters of (8.9±1.3) and (6.8±1.4) nm at low agglomeration.
Egeberg, Alexander +6 more
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The Journal of Physical Chemistry B, 2003
The hydrolysis of H2PtCl6, RuCl3, OsCl3, and H2IrCl6 under basic conditions in the presence of a water-soluble betaine stabilizer affords aqueous colloidal solutions of the mixed metal oxide PtRuOsIrOx displaying a particle size of 1.3−1.6 nm. The ratio of the four metals can be adjusted by choosing the appropriate relative amounts of metal salts ...
Reetz, M. +4 more
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The hydrolysis of H2PtCl6, RuCl3, OsCl3, and H2IrCl6 under basic conditions in the presence of a water-soluble betaine stabilizer affords aqueous colloidal solutions of the mixed metal oxide PtRuOsIrOx displaying a particle size of 1.3−1.6 nm. The ratio of the four metals can be adjusted by choosing the appropriate relative amounts of metal salts ...
Reetz, M. +4 more
openaire +3 more sources