Study On ATO Anode Preparation And Its Electro-catalytic Ability For Phenol Oxidation

Phenol is a kind of chemical reagent with wide usage. Especially with the fastdevelopment of coal chemical engineering, the problem of phenol removing fromwaste water becomes more and more serious. And electro-catalysis is widely used totreat waste water with phenol, due to its simplicity for automatic operation, fineatmosphere compatibility and good degradation efficiency. In our research, we studiedon phenol degradation respectively on GC substrate anode and Ti substrate anode.Anode preparation method and other parameters were respectively changed to studyits effect on phenol oxidation, and further study the mechanism.First, glassy carbon was chosen as the electro-catalytic anode, CV curves wererespectively recorded to study the effect of supporting electrolyte, scan circles, phenoloriginal concentration, scan rate and ATO (Antimony doped Tin Oxide) coating onphenol degradation rate. The study can act as a theoretical basis in the practicalapplication of phenol removal.Second, Ti substrate was used to electro-catalytic oxidation of phenol, electrodepreparation method, operation parameter of degradation process and the parameter ofelectrode preparation technology were all studied. Electrode preparation techniquesinclude solvothermal synthesis of ATO powder and its adhesion on Ti substrate,directly solvothermal growth of ATO on Ti substrate, directly solvothermal growth ofATO on Ti substrate and followed by muffle calcination, ATO precursor coating andsubsequent muffle calcination. Operation parameters include voltage, current densityand electrolyte. And the preparation parameters include the number of times of ATOprecursor coating, the molar ratio of Sn: Sb of ATO coating.Further more, based on the phenomena, recorded data of the experiments in ourresearch and previous reports by other researchers, proposed reaction pathways ofphenol oxidation under different conditions were given.