CO<Sub>2</Sub> Reduction Reactions Using Monometallic and Bimetallic Nanomaterials in a Photochemical Reactor

CO2 is a renewable carbon source and an eco-friendly chemical reagent. CO2 from greenhouses leads to global warming and is also used to convert valuable chemicals. Reduction of CO2 to useful fuels and organics leads to an area of interest over a few decades. CO2 is mainly used to convert into a useful fuel, which may become an alternative to unsustainable fuels. For this, there are several methods available, including thermochemical, sonochemical, electrochemical, photocatalytic, and hydrothermal. Among these, the most prominent research focuses on photosynthesis or solar energy to facilitate this conversion. Major Findings: This study demonstrates effective CO2 reduction using mono- and bimetallic nanoparticles in a photoreactor with polyamines, producing ethanol, methanol, and formic acid, as confirmed by ¹H NMR and GC analysis.