双酚A污染问题日益严峻，已经威胁到人类的健康。半导体光催化技术可以有效去除水体中双酚A污染。近年来，二氧化钛／石墨烯复合材料，因其优越的光催化性能受到广泛关注。尤其石墨烯等新型纳米碳基材料，有较大的比表面积和丰富的官能团，为二氧化钛的负载创造了良好的条件，其表面可以形成化学键，为双酚A的吸附降解提供了更多的活性位点。本文重点介绍了国内外二氧化钛／石墨烯复合材料的制备方法及各种制备方法的优缺点；讨论了二氧化钛／石墨烯复合材料对双酚A的降解效果及其降解机理；分析了二氧化钛／石墨烯复合材料的再生性能。最后总结这种材料在实际应用中存在的问题及其前景展望。
Bisphenol?A has been widely used in domestic and industrial production, which threatens human's health. Semiconductor?mediated heterogeneous photocatalysis is a promising technology for removing Bisphenol?A from wastewater. TiO2?Graphene nanocomposite is currently the most widely and deeply studied semiconductor photocatalyst because of its effective photocatalytic properties. Graphene, with large specific surface area, superior electron mobility and wealth of surface functional groups, is considered a good platform for the fabrication of high performance nanocatalyst. This review studies the preparation and modification methods of TiO2?Graphene nanocomposite, discusses the photo degradation mechanisms of bisphenol?A, and analysies the recycling property of TiO2?Graphene. The prospect on the research of TiO2?Graphene nanocomposite is also presented.
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