摘要
将高分子金属卟啉聚中位四 (4,4’ 联苯二磺酰基 )氧基苯基钴卟啉用于多相光催化体系 ,在温和条件下成功地降解了有机染料吖啶橙 .实验结果表明 ,降解反应符合一级动力学方程lnct=2 .5 2 0 5 2 - 0 .5 6 5 46t(R =- 0 .9970 4) ,经 8h的反应以后 ,染料溶液完全褪色 .将此光催化剂用于混合染料、染料废水、化工厂废水及生活污水的处理 ,脱色率可达 6 8% ,COD去除率可达 5 8% .通过对高压汞灯、碘钨灯和自然光等各种光源进行比较 ,发现在太阳光照射下 ,金属卟啉光催化氧化降解有机污染物的效率更高、速度更快、降解更完全 .
In heterogeneous photocatalytic oxidation system, acridine orange (AO) was degraded successfully by polymeric metalloporphyrin Co [meso-tetra (4, 4'-biphenylbisulfonyl) phenylporphyrin] (PCoTBPBSOPP) under mild conditions. The results indicated that the photodegradation of AO obeys the first order law with equation as Inc(t) = 2. 520 52 - 0. 565 46t (R 0. 997 04). AO was decolored and decomposed completely after 8 h. Since PCoTBPBSOPP was applied to treat textile, industrial and domestic wasted-water. it was found that the average decolorization ratio of the dyes wasted-water is up to 68 % and the average removal of COD reaches 58 %. By comparison with high-pressure mercury lamp (HPML), iodine tungsten lamp(ITL) and natural sunlight(NSL), AO can be decomposed rapidly under irradiation with NSL. It is proved that the polymeric metalloporphyrins have a potential effective application in treating the wasted-water under natural conditions.
出处
《催化学报》
SCIE
CAS
CSCD
北大核心
2001年第2期189-192,共4页
基金
国家自然科学基金! ( 2 99770 15 )
甘肃省自然科学基金! (ZS981 A2 4 0 5 8 Y
ZR 96 0 66)
关键词
高分子金属卟啉
光催化氧化降解
有机污染物
吖啶橙
废水处理
光催化剂
polymeric metalloporphyrin
photocatalytic oxidative degradation
organic pollutant
acridine orange
treatment of wasted-water
