硫化铁基材料应用于氧化体系去除水体污染物研究进展

Progress on sulfide iron-based material used in oxidation system to remove water pollutant

近年来,对常规的铁基材料进行硫化改性已经成为抑制铁材料团聚和氧化,提高其反应活性的重要技术手段。通过硫化铁基材料可构建非均相氧化体系,该体系反应更高效且适用范围更广,在水处理中具有广阔的应用前景。综述了常见的硫化含铁物质作为非均相类Fenton催化剂去除水体难降解有机污染物的研究进展,探讨了经硫化处理后不同种类的铁化合物催化降解有机物的性能,讨论了硫掺杂对于提高催化剂反应活性以及拓宽其适用范围的作用机理。最后指出,硫化铁基材料的制备参数优化和探索自然界中硫化物的实际应用潜力及其与水生物体的相互作用机制是未来的研究方向。

In recent years,the sulfidation of conventional iron-based materials has become an important technical approach to reduce the agglomeration and oxidation of iron materials and improve their reactivity.A heterogeneous oxidation system can be constructed on the basis of sulfide-modified iron-based materials,which have been reported to be more efficient than pristine iron materials,and shown a wider range of applications and better application prospects in water treatment.The recent research progress of common sulfide-modified iron materials as heterogeneous Fenton catalysts for the remove of aqueous refractory organic pollutants was reviewed.The performance of different types of sulfidated iron materials for catalytic degradation of organic compounds was investigated.In addition,the mechanism of sulfur doping to improve the reactivity of the catalyst and broaden its scope of application was discussed.Finally,the optimization of preparation parameters of surfidated iron materials,the exploration of practical application potential of sulfides in nature,and the interaction mechanism of sulfides with aquatic organisms were proposed for further studies.