Photocatalytic processes with tungsten oxygen anion clusters.

Photocatalytic processes with tungsten oxygen anion clusters.

Frontiers in bioscience : a journal and virtual library (2003-09-06)

Elias Papaconstantinou, Anastasia Hiskia, Aristidis Troupis

KIVONAT

Polyoxometalates (POM) have a rich and promising photochemical behavior. Upon illumination at the O M CT band (i.e., in UV and near-visible area) become powerful oxidizing reagents able to oxidize various organic compounds. In the process POM undergo stepwise reduction accumulating electrons that can be subsequently delivered, via thermal reactions to a variety of oxidants. This way a great variety of organic compounds are oxidized and indeed mineralize to CO2, H2O and inorganic anions and several organic and inorganic compounds can be reduced via a photocatalytic process in which POM serve as electron relays. Thus, in principle, POM can serve as decontamination photocatalysts of aquatic media removing both organic pollutants and metal ions. Under special conditions controlled photocatalytic reactions have been reported. In addition the reduction precipitation of metal ions mediated by POM may lead to formation of metal nanoparticles in which POM serve as reducing reagents and stabilizers.

ANYAGOK

Cikkszám

Márka

Termékleírás

GF91197748

Tungsten, foil, 1m coil, thickness 0.1mm, coil width .6mm, as rolled, 99.95%

GF74651698

Tungsten, foil, 100x100mm, thickness 0.5mm, as rolled, 99.95%

GF68135025

Tungsten, foil, 0.5m coil, thickness 0.6mm, coil width 1mm, as rolled, 99.95%

GF99287061

Tungsten, foil, 0.5m coil, thickness 0.05mm, coil width 1.5mm, as rolled, 99.95%

GF74075452

Tungsten, foil, 100x100mm, thickness 0.1mm, as rolled, 99.95%

GF87782732

Tungsten, foil, 200x200mm, thickness 0.15mm, as rolled, 99.95%

GF75205885

Tungsten, foil, 5m coil, thickness 0.1mm, coil width 1.5mm, as rolled, 99.95%

GF97996998

Tungsten, rod, 1000mm, diameter 3.0mm, centerless ground, 99.95%

GF82229542

Tungsten, insulated wire, 0.5m, conductor diameter 0.015mm, insulation thickness 0.002mm, polyimide insulation, 99.9%

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Tungsten, microfoil, disks, 10mm, thinness 0.05μm, specific density 96μg/cm², permanent mylar 3.5μm support, 99.95%

GF75672254

Tungsten, insulated wire, 2m, conductor diameter 0.0125mm, insulation thickness 0.0035mm, polyimide insulation, 99.9%

GF73441199

Tungsten, microfoil, disks, 10mm, thinness 0.1μm, specific density 182μg/cm², permanent mylar 3.5μm support, 99.95%

GF94362521

Tungsten, rod, 8.25mm, diameter 9.5mm, centerless ground, 99.95%

GF69782349

Tungsten, insulated wire, 5m, conductor diameter 0.075mm, insulation thickness 0.02mm, PTFE (polytetrafluoroethylene) insulation, 99.9%

GF91891266

Tungsten, insulated wire, 10m, conductor diameter 0.05mm, insulation thickness 0.008mm, polyimide insulation, 99.9%

GF86719461

Tungsten, foil, not light tested, 25x25mm, thickness 0.006mm, 99.95%

GF86859433

Tungsten, rod, 500mm, diameter 4.0mm, centerless ground, 99.95%

GF79060103

Tungsten, insulated wire, 2m, conductor diameter 0.025mm, insulation thickness 0.005mm, polyimide insulation, 99.9%

GF81654655

Tungsten, insulated wire, 5m, conductor diameter 0.05mm, insulation thickness 0.008mm, polyimide insulation, 99.9%

GF99068305

Tungsten, foil, 0.5m coil, thickness 0.02mm, coil width .1mm, as rolled, 99.95%

GF86574831

Tungsten, foil, 2m coil, thickness 0.016mm, coil width .36mm, as rolled, 99.95%

GF87677915

Tungsten, foil, 1m coil, thickness 0.08mm, coil width .9mm, as rolled, 99.95%

GF86869153

Tungsten, foil, 2m coil, thickness 0.10mm, coil width .9mm, as rolled, 99.95%

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Tungsten, wire reel, 100m, diameter 0.5mm, clean, 99.95%

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Tungsten, wire reel, 100m, diameter 0.005mm, hard, clean, 99.95%

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Tungsten, wire reel, 10m, diameter 0.01mm, hard, 99.95%

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Tungsten, wire reel, 20m, diameter 0.01mm, hard, 99.95%

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Tungsten, wire reel, 200m, diameter 0.01mm, hard, 99.95%

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Tungsten, wire reel, 25m, diameter 0.15mm, clean, 99.95%

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Tungsten, wire reel, 1m, diameter 0.25mm, clean, 99.95%