Influence of F^‐ doping on the microstructure, surface morphology and electrochemical properties of the lead dioxide electrode

Abstract

The lead dioxide electrode (PbO 2 ) with Ti substrate and SnO 2 -Sb 2 O 5 intermediate layer was doped by Fion through the potentiostatic anode co-deposition method. The content of F in the coating can be controlled by adjusting deposition potential. The effect of Fdoping on the composition, surface morphology and electrochemical properties of the PbO 2 electrode was characterized by X-ray diffraction, scanning electron microscope, X-ray photoelectron spectroscopy and electrochemical measurement methods. The results have confirmed that the content of b-PbO 2 increases with increasing that of F, and the doping can make the b-PbO 2 grains become fine and the electrode surface become smooth; the specific surface areas and conductivity increase, and the initial potential of oxygen evolution shifts toward positive direction compared with the free-doped PbO 2 electrode; the oxygen evolution potential increases with the increasing of the Fcontent in the PbO 2 film electrode. The bulk electrolysis result demonstrated that the performances of the F-PbO 2 electrode for anodic oxidation aniline have been improved to some extent.

SnO 2 -based solid solutions for CH 4 deep oxidation: Quantifying the lattice capacity of SnO 2 using an X-ray diffraction extrapolation method

“…4(e) presents the Pb 4f spectra of the SnPb9-1 catalyst. A set of doublet peaks at 137.5 and 142.2 eV for Pb 4f7/2 and Pb 4f5/2, respectively, are consistent with the reported binding energies of PbO2 [43,49,50].…”

Comparison of electrocatalytic characterization of Ti/Sb-SnO2 and Ti/F-PbO2 electrodes

“…The introduction of F − into the Ti/PbO 2 electrode results in a notable rise for the potential of the organics degradation. The research on F − doping into the Ti/ PbO 2 electrode (Ti/F-PbO 2 ) mainly focused on preparation methods, physical and chemical properties, and mechanism of the electrochemical processes [21,22].…”

Fabrication and Characterization of a PbO2-TiN Composite Electrode by Co-Deposition Method

“…16 Besides, the catalytic performance of the Ti/PbO 2 electrode still has room for improvement. Thus, several efforts have been devoted to further improve its performance in the electrochemical oxidation capability and stability, including inserting the middle layer, 17 doping with elements (Bi, 18 Co, 19 Fe, 20 F, 21 Ce, 22 Cu, 23 etc. ), compounds (TiO 2 , 24 fluorine resin (FR), 25 etc.)…”