Preparation of Four DSAs and Comparison of Their Electro-catalytic Activity
4种DSA阳极的制备及其电催化性能比较

Four different dimensionally stable anodes (DSAs) Ti/SnO2+Sb2O3, Ti/PbO2, Ti/Fe-PbO2 and Ti/SnO2+Sb2O3/Fe-PbO2 were prepared. Their surface morphology was characterized by SEM and polarization curves were investigated in H2SO4 solution. In order to explore their electro-catalytic activity, electro-catalytic degradation experiment was carried out with phenol as model organic compound. The research results indicated that Ti/SnO2+Sb2O3/Fe-PbO2 anode had the highest catalytic activity among the four anodes. The phenol removal rate reaches 95%. The accelerated lifetime of the electrodes with interlayer was improved obviously, reaching 16 h. In addition, the electro-catalytic degradation reaction of phenol on the four anodes followed first-order reaction kinetic law.