Metal–organic frameworks (MOFs) and covalent organic frameworks (COFs) are widely used in photocatalysis for their high surface area, rich pore structures, and multiple active sites. Although photogenerated carriers generated by MOFs or COFs migrate through their respective active centers under visible light, the charge recombination exists in the MOFs or COFs. Therefore, researchers have constructed covalent bonds between MOFs and COFs as migration channels to effectively mitigate charge recombination. As is well-known, an MOF-COF as a signifcant semiconductor photocatalyst is a common choice for MOFs and COFs, but no systematic analysis of MOF-COF photocatalysts is known. On the basis of our group's research, this paper provides a detailed discussion of the design, synthesis, and mechanistic analysis of MOF-COF photocatalysts. First, we discuss MOF-COF heterojunction structures that can improve the photocatalytic properties of MOFs and COFs. Further, we cover the preparation of MOF-COF photocatalysts with core–shell and non-core–shell structures that are denoted MOF@COF and MOF/COF, respectively, according to different synthesis methods. Then we analyze the mechanisms of MOF-COF photocatalysts, involving photocatalytic hydrogen evolution (PHE) and photodegradation. Finally, we discuss the challenges and opportunities of MOF-COF photocatalysts. It is hoped that this review will facilitate the development and application of MOF-COF photocatalysts.

Guangsong Yuan

Lichuan Tan

Peng Wang

Yongchao Wang

Cuijuan Wang

Hongjian Yan

Yao-Yu Wang

Crystal Growth & Design

晶体生长与设计的目的是促进在晶体生长、晶体工程和晶体材料的工业应用领域工作的科学家和工程师之间的知识交流。晶体生长与设计出版物理、化学的理论和实验研究，以及与晶体材料的设计、生长和应用相关的生物现象和过程。鼓励来自不同学科和技术的协同方法，整合晶体生长、晶体工程、分子间相互作用和工业应用等领域。

The aim of "Crystal Growth and Design" is to facilitate knowledge exchange among scientists and engineers working in the fields of crystal growth, crystal engineering, and the industrial applications of crystal materials. The journal publishes theoretical and experimental research in physics and chemistry related to the design, growth, and application of crystal materials, as well as biological phenomena and processes associated with them. We encourage collaborative approaches from various disciplines and technologies, integrating research in crystal growth, crystal engineering, intermolecular interactions, and industrial applications.

《Crystal Growth and Design》的目的是促进在晶体生长、晶体工程和晶体材料工业应用领域工作的科学家和工程师之间的知识交流。该期刊出版与晶体材料的设计、生长和应用相关的物理、化学理论和实验研究，以及生物现象和过程。我们鼓励来自不同学科和技术的协同方法，整合晶体生长、晶体工程、分子间相互作用和工业应用等领域的研究。

Category	Quartile
化学	2
化学, 晶体学	1
化学, 化学综合	3
化学, 材料科学综合	3

MOF-COF Composite Photocatalysts: Design, Synthesis, and Mechanism

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Journal Info

Category	Quartile
MATERIALS SCIENCE, MULTIDISCIPLINARY	2