**5. Conclusions**

Artificial photosynthesis using catalysts to convert CO2 to high value-added chemicals or fuels is an ideal way to e ffectively solve energy and environmental problems. The MOFs materials exhibit grea<sup>t</sup> application prospects in the field of photocatalysis, due to its ultra-high specific surface area, porous properties, modified/regulated textures, and high capture capability for CO2 molecules. The advantages and significance of MOFs materials in CO2 catalytic reduction are described in detail. Meanwhile, the application of typical MOFs in CO2 photoreduction, for example, Zr-MOFs, Zn-MOFs, and Ti-MOFs, were introduced and summarized. Finally, the future development trend and prospect of photocatalytic CO2 reduction are anticipated in this review.

**Funding:** This work was supported by the National Natural Science Foundation of China (No. 51572157), the Natural Science Foundation of Shandong Province (No. ZR2016BM16), Qilu Young Scholar Program of Shandong University (No. 31370088963043), and the Fundamental Research Funds of Shandong University (No. 2018JC036, 2018JC046).

**Conflicts of Interest:** The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results.
