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.

Contents
1 Introduction
2 Study on mechanism of two dimensional Z-scheme photocatalysis
2.1 Reaction mechanism of Z-scheme photocatalysis
2.2 Characteristics and functions of two dimensional Z-scheme photocatalyst
3 Novel two-dimensional visible light catalysts and its control synthesis
3.1 Graphite-phase carbon nitride (g-C₃N₄)
3.2 Sulfide
3.3 Bismuth based photocatalyst
4 Application of two dimensional Z-scheme visible light responsive photocatalyst in the field of pollutant control
4.1 Photocatalytic degradation of dyes
4.2 Photocatalytic degradation of phenols
4.3 Photocatalytic degradation of antibiotics
5 Application of two dimensional Z-scheme visible light responsive photocatalyst in the energy conversion
5.1 Photocatalytic hydrogen production
5.2 Photocatalytic reduction of CO₂
6 Conclusion