“…The main products are H 2 ,C O, CH 4 , and other hydrocarbons, and the most advantageous characteristics of this reaction are the use of solar heat andl ight energy.I np reviousy ears, research into the photocatalytic CDC reactiona sar educing process has received extensive attention. Many photocatalytic materials, such as traditional TiO 2based materials, [132,133] new non-metallicg raphite-like carbon nitride materials, [134,135] metal-organic framework (MOF)c ompounds, [136,137] and even covalento rganic framework (COF) compounds, [138][139][140] have been used for this reaction. This progress shows that the photocatalytic CDC reaction has received much attention in the photocatalytic conversion of CO 2 .C ompared with two previousC O 2 conversion reactions with CH 4 or H 2 as reducing agents, enthusiasm for this reactionh as reachedasudden point of change.…”