title: Electro-catalytic activity of palladium modified nitrogen doped titania nanoparticles.
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.
authors.forename: Bijuan
authors.initials: B
authors.lastname: Zheng
authors.forename: Bei
authors.initials: B
authors.lastname: Qi
authors.forename: Yulong
authors.initials: Y
authors.lastname: Hu
authors.forename: Fan
authors.initials: F
authors.lastname: Zhang
authors.forename: Hongfang
authors.initials: H
authors.lastname: Liu
mesh_terms: D002384:Catalysis; D004563:Electrochemistry; D053768:Metal Nanoparticles; D008855:Microscopy, Electron, Scanning; D009584:Nitrogen / Q000737:chemistry*; D010100:Oxygen / Q000032:analysis; D010165:Palladium / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*
chemical_list: D010165:Palladium; D014025:Titanium; D009584:Nitrogen; D010100:Oxygen