Abstract：A new two-tank photo-electro-chemical catalytic reactor was designed. TiO2/Ti thin film electrode was used as photo-anodes, and graphite as cathode and a saturated calomel electrode (SCE) as the reference electrode in the reactor. The effects of cathodic potential, electrolyte concentration, reactive time and pH on the decolorization rate of methyl orange were investigated. Degradation of methyl orange was little influenced by the the electrolyte concentration, while obviously affected by cathodic potential, reactive time and pH value. Under the conditions of cathodic potential Ec-0.6V, initial solution pH3.0 in cathodic compartment and pH5.6 in anodic site, the highest decoloring rate of the methyl orange with 200 colourity was 98.3% and 51.3% in cathodic and anodic compartment respectively when the catalytic reaction time was 90min. Compared with the“two compartment and single effect” photoelectrocatalytic reactor only having photo-oxidation with TiO2/Ti anodic electrode, the new reactor obviously enhanced the degradation rate of methyl orange. The change of UV-Vis spectra showed that methyl orange in anode and cathode was not only decolored, but also the phenyl was degraded.
李明玉, 尚薇, 王心乐, 苏有武, 宋琳, 张渊明. 光电化学协同催化降解甲基橙的研究[J]. 中国环境科学, 2009, 29(5): 512-517.
LI Ming-Yu, SHANG Wei, WANG Xin-Le, SU You-Wu, SONG Lin, ZHANG Yuan-Ming. The degradation of methyl orange with photo-electro-chemical synergistic catalysis system.. CHINA ENVIRONMENTAL SCIENCECE, 2009, 29(5): 512-517.
