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.

材料

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产品描述

366994

Sigma-Aldrich

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268496

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460400

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268526

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348805

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钛, mesh, 100x100mm, nominal aperture 0.19mm, wire diameter 0.23mm, 60x60 wires/inch, open area 20%, twill weave

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305812

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钛, 5-10 mm, ≥99.99% trace metals basis (purity exclusive of Na and K content)

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钛, foil, thickness 0.127 mm, ≥99.99% trace metals basis

267481

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钛, foil, thickness 0.25 mm, 99.99% trace metals basis

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348864

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钛, rod, 10mm, diameter 50mm, 99.99+%

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钛, tube, 1000mm, outside diameter 10.3mm, inside diameter 8.7mm, wall thickness 0.8mm, annealed, 99.6+%

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