K2S2O8掺杂TiO2光催化深度处理色素生产废水

Degradation of pigment production wastewater via a K2S2O8-doped TiO2 photocatalyst

以K2S2O8为S源制备S/TiO2催化剂,并通过XRD、SEM和XPS对制备的催化剂进行了表征。结果表明:制备的催化剂呈现出高结晶度和均匀的形貌,S不仅掺入到TiO2的晶格中,而且还以SO42-的形式固定在其表面上。采用制备的S/TiO2光催化降解色素生产废水生物降解出水,结果表明,在最佳参数条件下,经过150 min的模拟太阳光照射后,COD和色度去除率分别可达85.6%和95.7%。

The S/TiO2 catalyst was prepared with K2S2O8 as S precursor and then characterized by XRD,SEM and XPS,respectively.The results showed that the catalyst exhibited high crystallinity and uniform morphology.S was not only incorporated into the crystal lattice of TiO2,but also anchored on the surface in the form of SO42-.The photocatalytic degradation of the biodegradable effluent from the pigment production wastewater was carried out by using S/TiO2 catalyst.Under the optimal parameters,after 150 min of simulated sunlight,COD and chroma degradation rate of the wastewater were up to 85.6%and 95.7%,respectively.