Performance of Manganese and Antimony co-doping Tin Dioxide Anodes Prepared at Different Temperatures

摘要

In this article, the titanium based Mn-Sb co-doping SnO2 anodes (Ti/Mn-Sb-SnO2) prepared by thecoating pyrolysis method at different annealing temperatures were investigated. The novel Ti/Mn-SbSnO2 anodes did not only perform higher stability than the Ti/Sb-SnO2 without Mn doping, but alsoexhibit superior capability of degrading phenol. The electrodes were characterized by X-ray diffraction(XRD), scanning electron microscopy (SEM) with energy dispersive X-Ray (EDX), polarization curve,chronopotentiometry, and phenol degradation simulation. Among all the samples, the Ti/Mn-Sb-SnO2electrode annealed at 550 °C performed the best catalytic stability. Moreover, the phenol removalefficiency of Ti/Mn-Sb-SnO2 anode made at 600°C almost reached 100% in 2h. To probe into the deepreason resulting in the better catalysis, the fluorescence spectrum method was applied to test the hydroxylradicals produced on the surfaces of each electrodes in phenol oxidation. The results confirmed Mndoping could promote the catalysis activities of Ti/Mn-Sb-SnO2 electrodes.