黄铁矿及其改性复合材料在水污染处理中的应用

Application of Pyrite and Its Modified Composite in Water Pollution Treatment

黄铁矿因其强表面活性、沉淀吸附性、氧化还原性和较好的催化性能等在水污染处理方面具有可观的应用潜力,广泛用于污染水中重金属、有机物和各类无机盐的处理。但也因其一些固有缺陷,如极易发生团聚和比表面积较小等限制它在实际中的应用。通过形貌修饰、元素掺杂、材料负载等方法对黄铁矿进行适当改性,可以提高粒径分散性能,暴露更多功能性基团,改善电子传递能力等,从而调控黄铁矿吸附、氧化还原或催化等功能,增强污水处理能力。本文首先介绍了黄铁矿的基本情况,对黄铁矿在污水治理方面的应用现状和作用机理进行了综述,然后阐述了典型的改进方法及各自的增强机理,为黄铁矿类复合材料在环境治理领域的发展现状作了系统介绍和展望。

Due to its strong surface activity,precipitation adsorption,redox and relatively excellent photocatalytic properties,pyrite has been widely used to treat heavy metals,organic pollutants and various inorganic salts in the polluted water.However,some inherent defects of pyrite,such as small specific surface area,high susceptibility to agglomeration,etc.,limit its practical applications.Appropriate modification of pyrite via morphological adjustment,elemental doping,and material loading can improve the dispersion performance of particle size,expose more functional groups and increase electron transport rate to further modulate the related properties and enhance the wastewater treatment capacity of pyrite,In this article,we firstly introduce the basic information,the application and the mechanism of pyrite in wastewater treatment,and then describe the typical modification methods of pyrite and their corresponding strengthening mechanisms for treating wastewater.This article will provide a systematic introduction and outlook for the development of pyrite-based composite materials in the field of environmental treatment.