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  • Electro-catalytic activity of palladium modified nitrogen doped titania nanoparticles.

Electro-catalytic activity of palladium modified nitrogen doped titania nanoparticles.

Journal of nanoscience and nanotechnology (2014-04-17)
Bijuan Zheng, Bei Qi, Yulong Hu, Fan Zhang, Hongfang Liu
摘要

Pd-modified N-doped TiO2 nanoparticles were prepared by the sol-gel method. The X-ray diffraction (XRD) pattern indicated that the pure anatase TiO2 has been obtained. Transmission electron microscope (TEM) was used to observe the micro-morphology of the nanoparticles. The average size of the particles was 8.04 nm. The N2 adsorption isotherm of the resulted nanoparticles was the type IV with a H1 type hysteresis loop. The specific surface area was 145.2 m2 g(-1) and the average diameter of adsorption was 4.178 nm. These Pd-modified N-doped TiO2 nanoparticles were applied onto the surface of glass carbon electrode (GCE), and its electro-catalytic activity was tested by cyclic voltammetry (CV). The reduction peak currents showed a linear response to the dissolved oxygen (DO) concentrations ranging from 0.6 mg L(-1) to 7.2 mg L(-1) on the Pd-N-TiO2/ GCE. The linear regression equation was y = 3E - 6x + 1E-5 (R = 0.9909). The detection limit was 0.22 mg L(-1.) The result indicated that the Pd-N-TiO2 possessed a good electro-catalytic activity.

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氮气, ≥99.998%
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钛, foil, thickness 0.127 mm, 99.7% trace metals basis
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钛, foil, thickness 0.25 mm, 99.7% trace metals basis
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钛, powder, <45 μm avg. part. size, 99.98% trace metals basis
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钛, powder, −100 mesh, 99.7% trace metals basis
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钛, foil, thickness 0.025 mm, 99.98% trace metals basis
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钛, sponge, 3-19 mm, 99.5% trace metals basis
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钛, nanoparticles, dispersion, <100 nm particle size, in mineral oil, 98.5% trace metals basis
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钛, foil, thickness 2.0 mm, 99.7% trace metals basis
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钛, foil, thickness 0.1 mm, 99.99% trace metals basis
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钛, crystalline, 5-10 mm, ≥99.99% trace metals basis (purity exclusive of Na and K content)
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钛, foil, thickness 0.5 mm, 99.99% trace metals basis
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钛, sputtering target, diam. × thickness 2.00 in. × 0.25 in., 99.995% trace metals basis
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钛, wire, diam. 0.81 mm, 99.7% trace metals basis
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钛, foil, thickness 0.25 mm, 99.99% trace metals basis
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钛, rod, diam. 6.35 mm, 99.99% trace metals basis
钛, mesh, 100x100mm, nominal aperture 0.19mm, wire diameter 0.23mm, 60x60 wires/inch, open area 20%, twill weave
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钛, foil, thickness 0.127 mm, ≥99.99% trace metals basis
钛, mesh, 100x100mm, nominal aperture 4.3mm, wire diameter 1.5mm, 4.4x4.4 wires/inch, open area 94%, platinized diamond mesh
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钛, wire, diam. 1.0 mm, 99.99% trace metals basis
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钛, sputtering target, diam. × thickness 3.00 in. × 0.125 in., 99.995% trace metals basis
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钛, wire reel, 10m, diameter 0.05mm, hard, 99.8%
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钛, tube, 500mm, outside diameter 0.51mm, inside diameter 0.35mm, wall thickness 0.08mm, annealed, 99.6+%
钛, tube, 500mm, outside diameter 0.81mm, inside diameter 0.61mm, wall thickness 0.1mm, as drawn, 99.6+%
钛, tube, 500mm, outside diameter 1.05mm, inside diameter 0.75mm, wall thickness 0.15mm, annealed, 99.6+%
钛, tube, 500mm, outside diameter 1.6mm, inside diameter 1.2mm, wall thickness 0.2mm, hard, 99.6+%

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