“…Both materials are abundant, affordable, and exhibit a strong potential for full-range photocatalytic applications. Previous studies based on plasmonic silver nanostructures [76,92], Cu x O y systems [105,106,107] or in the combination of silver-copper alloys [108,109,110,111,112], silver-copper oxide heterostructures [109,113,114,115] or even silver-copper oxide decorating TiO 2 [70,108] have already proved their potential not only in visible-NIR expanded photocatalysis [70,114,116], but also in solar harvesting, electrocatalysis, bacteria disinfection, field emission enhancement or the formation of novel superconducting structures [55,108,109,111,114,115,116,117,118,119,120]. Herein, we have demonstrated that these Ag-CuO heterostructures with an intertwined configuration maximize the plasmon-semiconductor interaction.…”