Degradation of Azo Dyes by Photocatalysis of Fe（Ⅲ）-oxalate Complexes/H_2O_2 in Aqueous Non-ionic Surfactant Triton X-100 Solution

• Published in: Dong Hua da xue xue bao. Zi ran ke xue ban. Vol. 27; no. 4; pp. 535 - 543
• Main Author: 董永春 王秋芳 刘春燕 潘巧斌 徐天标
• Format: Journal Article
• Language: English
• Published: 2010
• ISSN: 1672-5220

Two azo dyes,C.I.Reactive Red 195（RR195）and C.I.Acid Black 234（AB234）were degraded by photocatalysis of Fe（Ⅲ）-oxalate complexes/H2O2 in aqueous non-ionic surfactant,Triton X-100（TX-100）solution.Some factors affecting the dye degradation such as TX-100 concentration,irradiation intensity,and sodium chloride were investigated.The interaction and competition between dye and TX-100 during the degradation were also examined using spectrophotometry and maximum bubble pressure method,respectively.The results indicated that TX-100 showed a significant reduction effect on degradation of two azo dyes,but which was largely confined to TX-100 concentration below the Critical Micellar Concentration（CMC）.And the reduction was considerably decreased above the CMC,especially in the case of AB234.Moreover,the reducing effect of TX-100 on dye degradation almost did not vary with irradiation intensity.And the impact of sodium chloride on dye degradation was limited by the addition of TX-100.