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

GF35446316

Titanium, rod, 100mm, diameter 20mm, annealed, 99.6+%

GF04765855

Titanium, tube, 200mm, outside diameter 3.0mm, inside diameter 1.5mm, wall thickness 0.75mm, annealed, 99.6+%

GF17799777

Titanium, rod, 100mm, diameter 40mm, annealed, 99.6+%

GF66495279

Titanium, tube, 1000mm, outside diameter 3.0mm, inside diameter 1.5mm, wall thickness 0.75mm, annealed, 99.6+%

GF38954076

Titanium, rod, 200mm, diameter 6mm, annealed, 99.6+%

GF08432726

Titanium, tube, 200mm, outside diameter 0.81mm, inside diameter 0.61mm, wall thickness 0.1mm, as drawn, 99.6+%

GF01312490

Titanium, rod, 500mm, diameter 16mm, annealed, 99.6+%

GF64784313

Titanium, rod, 100mm, diameter 4mm, annealed, 99.6+%

GF14423633

Titanium, rod, 1000mm, diameter 4mm, annealed, 99.6+%

GF48092687

Titanium, rod, 50mm, diameter 16mm, as drawn, 99.99+%

GF29374005

Titanium, mesh, 100x100mm, nominal aperture 4.3mm, wire diameter 1.5mm, 4.4x4.4 wires/inch, open area 94%, platinized diamond mesh

GF30789715

Titanium, rod, 200mm, diameter 20mm, annealed, 99.6+%

GF60092456

Titanium, tube, 1000mm, outside diameter 0.81mm, inside diameter 0.61mm, wall thickness 0.1mm, as drawn, 99.6+%

GF35682600

Titanium, tube, 200mm, outside diameter 6.1mm, inside diameter 5.1mm, wall thickness 0.5mm, annealed, 99.6+%

GF06003100

Titanium, tube, 100mm, outside diameter 9.5mm, inside diameter 8.2mm, wall thickness 0.65mm, annealed, 99.6+%

GF96834493

Titanium, rod, 1000mm, diameter 5mm, annealed, 99.6+%

GF33373795

Titanium, tube, 200mm, outside diameter 12.7mm, inside diameter 10.9mm, wall thickness 0.9mm, annealed, 99.6+%

GF39390880

Titanium, tube, 200mm, outside diameter 6.35mm, inside diameter 4.57mm, wall thickness 0.89mm, annealed, 99.6+%

GF45586985

Titanium, rod, 200mm, diameter 1.5mm, annealed, 99.6+%

GF57414179

Titanium, rod, 1000mm, diameter 6mm, annealed, 99.6+%

GF83238127

Titanium, tube, 100mm, outside diameter 3.0mm, inside diameter 1.5mm, wall thickness 0.75mm, annealed, 99.6+%

GF20610997

Titanium, tube, 1000mm, outside diameter 6.1mm, inside diameter 5.1mm, wall thickness 0.5mm, annealed, 99.6+%

GF14990935

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

GF82391878

Titanium, rod, 50mm, diameter 8.0mm, as drawn, 99.99+%

GF37525855

Titanium, tube, 200mm, outside diameter 0.51mm, inside diameter 0.35mm, wall thickness 0.08mm, annealed, 99.6+%

GF41739352

Titanium, rod, 25mm, diameter 20mm, as drawn, 99.99+%

GF16772160

Titanium, rod, 500mm, diameter 3.0mm, annealed, 99.6+%

GF21200746

Titanium, tube, 100mm, outside diameter 0.81mm, inside diameter 0.61mm, wall thickness 0.1mm, as drawn, 99.6+%

GF91253965

Titanium, rod, 50mm, diameter 9.5mm, annealed, 99.99+%

767506

Sigma-Aldrich

Titanium, sputtering target, diam. × thickness 2.00 in. × 0.25 in., 99.995% trace metals basis