Search results for "Anode"

showing 10 items of 317 documents

Information Processing Schemes Based on Monolayer Protected Metallic Nanoclusters

2011

Nanostructures are potentially useful as building blocks to complement future electronics because of their high versatility and packing densities. The fabrication and characterization of particular nanostructures and the use of new theoretical tools to describe their properties are receiving much attention. However, the integration of these individual systems into general schemes that could perform simple tasks is also necessary because modern electronics operation relies on the concerted action of many basic units. We review here new conceptual schemes that can allow information processing with ligand or monolayer protected metallic nanoclusters (MPCs) on the basis of the experimentally de…

Signal processingMaterials scienceBiomedical EngineeringBioengineeringNanotechnologyGeneral ChemistryContent-addressable memoryCondensed Matter PhysicsNanoclustersLogic gateScalabilityGeneral Materials ScienceElectronicsNanodeviceParallel arrayJournal of Nanoscience and Nanotechnology
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CCDC 902371: Experimental Crystal Structure Determination

2013

Related Article: P.Desogere,C.Bernhard,C.Goze,M.-J.Penouilh,Y.Rousselin,F.Denat|2013|Eur.J.Org.Chem.|2013|1538|doi:10.1002/ejoc.201201337

Space GroupCrystallography2a7a-Dibenzyl-1-cyanodecahydro-5H-4a9a-diaza-2a7a-diazoniacyclopenta[cd]phenalene dibromide trihydrateCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 902370: Experimental Crystal Structure Determination

2013

Related Article: P.Desogere,C.Bernhard,C.Goze,M.-J.Penouilh,Y.Rousselin,F.Denat|2013|Eur.J.Org.Chem.|2013|1538|doi:10.1002/ejoc.201201337

Space GroupCrystallography2a-Benzyl-1-cyanodecahydro-5H-4a7a9a-triaza-2a-azoniacyclopenta[cd]phenalene bromide methanol solvateCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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Two fungal lanostane derivatives as phospholipase A2 inhibitors.

1996

The hydroalcoholic extract of Poria cocos and two lanostane derivatives isolated from it, pachymic acid (1) and dehydrotumulosic acid (2), were active as inhibitors of phospholipase A2 from snake venom when a polarographic method was used. Dehydrotumulosic acid exhibited an IC50 of 0.845 mM. These two compounds are structurally related to certain triterpenoids from Ganoderma and Schinus that have previously been described as competitive inhibitors of phospholipase A2. These comprise a new group of natural potential antiinflammatory agents due to their interaction with that enzyme.

StereochemistryGanodermaCarboxylic acidPharmaceutical SciencePharmacognosyLanostanePhospholipases AAnalytical ChemistryPolyporaceaechemistry.chemical_compoundPhospholipase A2Oxygen ConsumptionTriterpeneDrug DiscoveryEnzyme InhibitorsPharmacologychemistry.chemical_classificationbiologyOrganic Chemistrybiology.organism_classificationTriterpenesPhospholipases A2Complementary and alternative medicinechemistryBiochemistryEnzyme inhibitorSnake venombiology.proteinMolecular MedicinePolarographySnake VenomsJournal of natural products
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Electrochemical reduction of carbon dioxide to formic acid at a tin cathode in divided and undivided cells: effect of carbon dioxide pressure and oth…

2016

Abstract The reduction of carbon dioxide to formic acid at a tin cathode was studied in both divided and undivided cells. In the first stage of the study, the effect of some operating parameters, including the working potential and the nature of the supporting electrolyte and of the cathode, on both the cathodic reduction of CO2 and the anodic oxidation of formic acid was investigated in a divided cell. In a second stage, the reduction of carbon dioxide was performed in an undivided cell with the aim of studying the effect on the generation of formic acid of various operating parameters such as current density, cathode to anode area ratio, mixing rate and nature of the anode and of the supp…

Supporting electrolyteFormic acidGeneral Chemical EngineeringInorganic chemistrychemistry.chemical_elementFormic acid02 engineering and technology010402 general chemistryElectrochemistry01 natural sciencesCarbon dioxide conversionlaw.inventionchemistry.chemical_compoundlawElectrochemistryChemical Engineering (all)CO2 PressureTin cathodeElectrochemical reduction of carbon dioxideElectrochemical reduction021001 nanoscience & nanotechnologyCathode0104 chemical sciencesAnodeCarbon dioxidechemistryCarbon dioxide0210 nano-technologyTinElectrochimica Acta
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Initial Preparation and Characterization of Single Step Fabricated Intermediate Temperature Solid Oxide Fuel Cells (IT-SOFC)

2013

In this study, facile tape casting process has been successfully carried out to fabricate an unit anode supported intermediate temperature solid oxide fuel cell (IT-SOFC) with four different layers: a composite cathode which is a mix of La0.6Sr0.4Co0.2Fe0.8O3 (LSCF48) and Gd0.1Ce0.9O1.9 (GDC10), GDC10 as thin electrolyte layer, NiO-GDC10 without pore former as thin anode functional layer (AFL), and anode support layer of NiO-GDC10 with carbon pore former. The multi-layer was sintered once to produce an unit planar cell. An OCV of 1.002 V at 500 °C, and maximum power density of 466 mW cm–2 at 648 °C are obtained. These results indicate negligible leakage of fuel through electrolyte. Furtherm…

Tape castingMaterials scienceRenewable Energy Sustainability and the EnvironmentScanning electron microscopeOpen-circuit voltageOxideEnergy Engineering and Power TechnologySinteringElectrolyteAnodechemistry.chemical_compoundchemistrySolid oxide fuel cellComposite materialFuel Cells
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Fabrication and characterization of nanostructured Ni–IrO2 electrodes for water electrolysis

2014

Abstract Nanostructured Ni–IrO2 electrodes were fabricated by electrodeposition in a two-step procedure: first arrays of nickel nanowires (NWs) were electrodeposited within pores of polycarbonate (PC) membranes, then iridium oxide nanoparticles were deposited on the Ni metal after membrane dissolution, for improving the catalytic activity. The aim was to compare performance of these electrodes with traditional ones consisting of Ni film. Different methods of deposition of the IrO2 electrocatalyst were investigated and the effect on electrodes stability and activity is discussed. Despite a low coverage of Ni NWs by the electrocatalyst, results indicate a faster kinetics of O2 evolution in 1 …

Template electrosynthesiAlkaline water electrolyserMaterials scienceElectrolysis of waterRenewable Energy Sustainability and the EnvironmentInorganic chemistryNanowireEnergy Engineering and Power TechnologyNanoparticlechemistry.chemical_elementCondensed Matter PhysicsElectrocatalystNi nanowireAnodeNickelSettore ING-IND/23 - Chimica Fisica ApplicataFuel TechnologyIridium oxidechemistryChemical engineeringElectrodeOxygen evolutionDissolutionInternational Journal of Hydrogen Energy
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ChemInform Abstract: Ganodermycin, a Novel Inhibitor of CXCL10 Expression from Ganoderma applanatum.

2012

Ganodermycin (I), a novel inhibitor of CXCL10 expression, is isolated from Ganoderma applanatum.

TerpeneGanoderma applanatumbiologyBiochemistryimmune system diseasesChemistryvirus diseasesCXCL10hemic and immune systemsGeneral Medicinerespiratory systembiology.organism_classificationChemInform
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Rapid and eco-friendly synthesis of graphene oxide-silica nanohybrids

2014

The increasing interest in Graphene oxide (GO) is due to many issues: the presence of both sp2-conjugated atoms and oxygen-containing functional groups provides a strong hydrophilicity and the possibility to further functionalize it with other molecules (i.e. π-π interactions covalent attachment etc.) [1]. Furthermore since the GO is biocompatible and noncytotoxic many studies have been recently focused on the development of GO-based nanodevices for bioimaging DNA detection drug delivery. Due to their low cytotoxicity and large internal surface area silica nanoparticles have been taken into account as promising material for biolabeling and drug loading/delivery. Particular consideration has recently been demonstrated for GO-silica composites because of the potentialities for electrical applications their chemical inertia and stability toward ions exposure. The possibility to combine the extraordinary properties of GO and silica offers several advantages for the realization of nanoprobes for biological applications and of biosensor [12]. The strategy for the fabrication of GO-nanosilica nanohybrids can be schematized as follows: (i) synthesis of GO by oxidizing graphite powder with the method described by Marcano et al. [3] (ii) Preparation of oxygen-loaded silica nanoparticles by thermal treatments in controlled atmosphere in order to induce high NIR emission at 1272 nm from high purity silica nanoparticles. (iii) preparation of GrO-silica nanohybrid films via rapid solvent casting in water. The nanohybrids were tested by XPS FTIR Raman analysis UV photoluminescence analysis TGA Zeta potential measurements electrical tests AFM and SEM. Several nanohybrids were prepared by combining two different typologies of GO and two different samples of silica.
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Cs0.86(NH41.14SO4Te(OH)6 in porous anodic alumina for micro fuel cell applications.

2011

Abstract Cs0.86(NH4)1.14SO4Te(OH)6 supported by anodic alumina membranes (AAMs) has been characterized for the first time in H2/O2 fuel cell. The fabricated membrane electrode assemblies are able to produce peak power densities in the range 15–30 mW cm−2 under mild conditions (room temperature, low humidity and low Pt loading) and show an increased durability with cycling with respect to previous results obtained with AAM-based fuel cell. The physico-chemical characterization of the electrolytes has been carried out through X-ray diffractometry, scanning electron microscopy and micro-raman analysis. An estimation of the composite membranes conductance under fuel cell operation has been carr…

Thin film fuel cellScanning electron microscopeChemistryGeneral Chemical EngineeringInorganic chemistryConductanceElectrolytePorous alumina fuel cellCesium ammonium sulphate tellurateAnodeMembraneSettore ING-IND/23 - Chimica Fisica ApplicataChemical engineeringElectrodeComposite proton conductors Porous alumina fuel cell Thin film fuel cell Cesium ammonium sulphate tellurateElectrochemistryComposite proton conductorThin filmPorosity
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