摘要：

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SO₄^2-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%。

关键词: 色素生产废水, 过硫酸钾, 二氧化钛, 光催化

Abstract:

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 SO₄^2-. 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.

Key words: pigment production wastewater, potassium persulfate, titanium dioxide, photocatalyst

中图分类号: 

• X703.1