光催化技术可将太阳能转化为可存储能源,还可直接利用太阳能分解污染物,是缓解能源紧张,净化环境的有效途径。Z型光催化体系可模拟光合作用过程,在可见光下具有较高的光能转化效率,成为近年来的研究热点,而碳化氮等二维纳米材料的发展进一步启发人们基于微观二维结构构建Z型光催化体系,以强化其光谱响应能力、载流子分离效率、氧化还原能力以及光蚀稳定性。本文综述了近年来二维Z型光催化材料在基础理论,合成方法方面的研究进展及其在环境和能源领域的应用情况,并对二维Z体系在光催化领域的研究前景进行了展望。
Photocatalysis,which not only converts solar energy into storable energy but also directly employs solar energy to decompose environmental pollutants,is one of the effective ways to alleviate the shortage of energy and remediate environment.The Z-scheme photocatalysts can simulate the natural photosynthesis process with high photocatalytic activity under visible light irradiation,becoming a research hotspot in recent years.The development of emerging carbonization nitrogen and graphene-like two-dimensional nanomaterials inspire people to build Z-scheme photocatalytic systems based on two dimensional nanostructure.By this means,the optical spectrum response,carriers separation capacity,redox potentials,and stability to resist light-etch of Z-scheme photocatalysts are reinforced.This paper reviews the recent progress in the study of two dimensional Z-scheme photocatalytic materials,introduces the preparation methods,reaction mechanisms and applications of two dimensional Z-scheme photocatalysts in the field of environment purification and solar energy conversion.Finally,the research prospects of two-dimensional Z-scheme materials in the field of photocatalysis are briefly proposed.