The design and preparation of dual Z-scheme photocatalytic system with stable and powerful redox ability, has became an effective strategy to solve the environmental pollution and energy crisis in recent years. Based on the advantages of dual Z-scheme photocatalysts such as fast charge carrier separation and transfer rate, wide range of light response, etc., significant progress has been made in recent years. In this review, the charge carrier transfer paths and construction principles of dual Z-scheme photocatalysts are focused on, the formation process of dual Z-scheme photocatalysts and their mechanism of action in the photocatalytic process are elucidated at the molecular level. Traditional characterization techniques and theoretical calculation methods are introduced to distinguish electron transfer paths. The applications of dual Z-scheme photocatalysts in the degradation of organic pollutants, conversion of inorganic pollutants, water splitting, and CO₂ conversion are summarized. Finally, dual Z-scheme photocatalysts’ challenges and application prospects of as a new material are presented.

 设计和制备具有稳定而强大的氧化还原能力的双Z型光催化体系 ，已成为近年来解决环境污染和能源危机的有效策略 。基于双Z型光催化剂的电荷载流子分离和转移速度快、光响应范围广等优点。，近年来取得了重大进展。本综述重点介绍了双Z型光催化剂的载流子转移路径和构建原理，从分子水平阐明了双Z型光催化剂的形成过程及其在光催化过程中的作用机理。引入传统表征技术和理论计算方法来区分电子转移路径。综述了双Z型光催化剂在有机污染物降解、无机污染物转化、水分解和CO ₂转化等方面的应用。最后，介绍了双Z型光催化剂作为一种新材料所面临的挑战和应用前景。