“…Photo/electrochemical carbon dioxide (CO2) reduction offers a promising pathway to reduce the excess atmospheric CO2 levels meanwhile converting CO2 into valuable chemicals, which has been already extensively studied with remarkable achievements within exclusive evaluation methods, reaction equipment and required catalysts. [3][4][5][6][7][8][9][10][11] (Figure 1) As is well known, the renewable solar energy/electricity manipulated CO2 reduction can be realized at ambient conditions with reduced products including carbon monoxide (CO) [12][13][14][15][16][17][18] , hydrocarbons 9,19,19,[19][20][21][22][23] (CH4, C2H6, C2H4âŠ.) and oxygenates 6,9,[24][25][26][27] (HCOOH, CH3COOH, CH3CH2OH, CH3CH2CH2OHâŠ.)…”