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作为一种水中的主要污染物,持久性有机污染物(POPs)严重威胁着人类健康.光催化降解水中的POPs是一项具有良好应用前景的创新性绿色技术.纳米化学领域的最新成就使得制备具有更优异降解性能的纳米尺寸催化剂成为可能.利用TiO_2、In_2O_3、ZnO等不同种类的纳米结构材料可有效地光催化降解POPs.值得一提的是,上述反应机理含有羟基自由基的生成.该自由基具有非常高的氧化电位,可将绝大部分POPs氧化.实验研究证实利用纳米结构材料光催化降解水中的POPs是一项新颖、可靠、经济且对环境无害的处理方式.
As a major pollutant in water, persistent organic pollutants (POPs) pose a serious threat to human health.Photocatalytic degradation of POPs in water is an innovative green technology with good application prospects.The latest achievements in the field of nanochemistry have made the preparation of It is possible to use nano-sized TiO 2, In 2 O 3, ZnO and other nanostructured materials for photocatalytic degradation of POPs.It is worth mentioning that the above reaction mechanism includes the formation of hydroxyl radicals Free radicals have a very high oxidation potential and can oxidize most of the POPs.Experimental studies have demonstrated that the photocatalytic degradation of POPs in water using nanostructured materials is a novel, reliable, economical and environmentally sound treatment.