一种可见光响应光催化纤维降解水中有机污染物研究

A Visible Light Responsive Photocatalytic Fiber for the Degradation of Organic Pollutants in Water

通过将纤维材料与石墨相氮化碳(g-C_(3)N_(4))光催化剂进行浸轧-烘燥处理,成功制备具有可见光响应的光催化纤维材料。以磺胺喹恶啉为有机物污染模型,考察了不同浸轧次数、烘燥温度,溶液pH对光催化效率的影响。结果表明,制得的光催化纤维可在太阳光光照下有效降解磺胺喹恶啉,且在宽谱的pH范围中具有优异的光催化活性。采用两浸两轧,140℃的烘燥温度工艺得到的光催化纤维最佳,在5次循环后对磺胺喹恶啉的去除率仍达97%。本文提出一种简单的粉体催化剂的负载方法,为大面积、大规模的污水治理、空气污染治理等环境治理问题提供了新思路新方法。

The photocatalytic fiber materials with visible light response were successfully prepared by dip-rolling-drying treatment of the fiber materials with graphitic carbon nitride(g-C_(3)N_(4))photocatalyst.The effects of different dip-rolling times,drying temperatures and solution pH on the photocatalytic efficiency were investigated using sulfoquinoxaline as the organic contamination model.The results show that the produced photocatalytic fibers can effectively degrade sulfoquinoxaline under sunlight illumination and have excellent photocatalytic activity in a broad spectrum of pH ranges.The photocatalytic fiber obtained by a two-dipping,two-rolling,140°C drying temperature process was optimal,and the removal rate of sulfoquinoxaline was 97%after five cycles.This paper proposes a simple method for loading powder catalysts,which provides new ideas and methods for large-area and large-scale environmental treatment problems such as sewage treatment and air pollution treatment.