The spray pyrolysis is fast and simple method for deposition of CeO₂ – rutile TiO₂ coatings on stainless steel substrate. The coatings were deposited on stainless steel substrate and characterized by XRD, AFM, XPS, Raman, DRS and photoactivity test for methyl orange decolorization. Photoactivity of CeO₂ – rutile TiO₂ coatings increase with increasing CeO₂ content up to 5 wt% and further increase of CeO₂ content leads to decrease of photoactivity. Improvements of photoactivity originate from close contact between CeO₂ and rutile TiO₂ particles which create numerous centers able to produce very reactive radical species. Besides, the close contact between the CeO₂ and rutile TiO₂ provides easier charge transfer facilitating the formation of electron/hole pairs that is a necessary step in the overall photocatalytic process.

喷雾热解是在不锈钢基材上沉积CeO _2-金红石型TiO ₂涂层的快速简便的方法。将涂层沉积在不锈钢基材上，并通过XRD，AFM，XPS，拉曼，DRS和光活性测试对甲基橙进行脱色。CeO _2-金红石型TiO ₂涂层的光活性随CeO ₂含量增加至5 wt％而增加，而CeO ₂含量的进一步增加导致光活性降低。CeO ₂和金红石TiO ₂紧密接触可提高光活性产生许多中心的粒子，这些中心能够产生非常活泼的自由基。此外，CeO ₂和金红石TiO ₂之间的紧密接触提供了更容易的电荷转移，促进了电子/空穴对的形成，这是整个光催化过程中的必要步骤。