摘要
制备了改性聚丙烯纤维铁配合物(Fe-PAA-g-PP),并将其作为非均相Fenton反应光催化剂应用于十二烷基苯磺酸钠(SDBS)的氧化降解反应中,考察了Fe-PAA-g-PP的铁配合量、溶液pH和辐射光等因素对SDBS去除率的影响,同时借助紫外可见光谱和TOC测定技术对其光催化氧化降解反应机理进行了初步分析,并通过黄瓜种子萌发生长试验研究了Fe-PAA-g-PP/H_(2)O_(2)体系对SDBS植物毒性的消减效应。结果表明,Fe-PAA-g-PP对SDBS的氧化降解反应具有显著的光催化作用,其铁配合量的增加有利于其活性的提高,且在pH 3-9范围内和不同辐射光条件下均表现出较好的光催化活性。在Fe-PAA-g-PP/H_(2)O_(2)体系中SDBS的苯环被氧化降解,且部分中间产物被矿化。Fe-PAA-g-PP/H_(2)O_(2)体系对SDBS的光催化氧化降解反应能显著消除其对黄瓜种子萌发的抑制作用。
The modified polypropylene fiber Fe complex(Fe-PAA-g-PP)is prepared and used as a heteroge⁃neous Fenton reaction photocatalyst in the oxidative degradation reaction of sodium dodecylbenzene sulfonate(SDBS).The effects of Fe content of Fe-PAA-g-PP,pH of solution and irradiation on the removal rate of SDBS are investigated.Meanwhile,the photocatalytic degradation mechanism of SDBS is studied using UV-vis spec⁃trum and TOC measurement technology.The reduction effect of Fe-PAA-g-PP/H_(2)O_(2) system on SDBS phytotox⁃icity is examined through cucumber seed germination test.The results indicate that Fe-PAA-g-PP shows a sig⁃nificant photocatalytic effect on oxidative degradation of SDBS.The increase of Fe content is conducive to the improvement of its activity.Fe-PAA-g-PP shows good photocatalytic activity at pH=3-9 and different irradiation conditions.The benzene of SDBS is oxidatively degraded in Fe-PAA-g-PP/H_(2)O_(2) system,and part of the interme⁃diate product is mineralized.The photocatalytic oxidative degradation reaction of the Fe-PAA-g-PP/H_(2)O_(2) system on SDBS can significantly eliminate its inhibitory effect on cucumber seed germination.
作者
张慧
董永春
李子钊
ZHANG Hui;DONG Yongchun;LI Zizhao(School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China;Key Laboratory of Advanced Textile Composites,Ministry of Education,Tiangong University,Tianjin 300387,China)
出处
《印染》
CAS
北大核心
2021年第9期6-10,共5页
China Dyeing and Finishing
基金
江苏省双创人才项目(2016-340)。
