 Photocatalytic reduction of carbon dioxide, CO2, with water is an emerging technology that can help mitigate climate change. It involves the use of semiconductors such as titanium dioxide, TiO2, and layered perovskites to convert solar energy into chemical energy by splitting water molecules into oxygen and hydrogen. These reactions produce clean energy and reduce atmospheric levels of CO2. Plasmonic photocatalysts, which utilize metallic nanoparticles to absorb visible light, have been developed to improve the efficiency of these processes. Despite their promise, there remain several challenges to be addressed before this technology can be widely implemented. Further research is needed to optimize the design of plasmonic photocatalysts and increase their efficiency.