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

ABSTRACT

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.

MATERIALS

Product Number

Brand

Product Description

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Titanium, wire reel, 5m, diameter 0.5mm, as drawn, 99.6+%

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Titanium, wire reel, 20m, diameter 0.05mm, hard, 99.8%

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Titanium, wire reel, 200m, diameter 0.125mm, annealed, 99.6+%

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Titanium, wire reel, 200m, diameter 0.25mm, annealed, 99.6+%

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Titanium, wire, straight, 1000mm, diameter 1.0mm, as drawn, 99.6+%

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Titanium, rod, 50mm, diameter 20mm, as drawn, 99.99+%

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Titanium, tube, 500mm, outside diameter 10.3mm, inside diameter 8.7mm, wall thickness 0.8mm, annealed, 99.6+%