Climate change is arguably one of the top challenges our planet faces during the 21st century, primarily due to the significant amounts of greenhouse gas emissions, particularly CO₂, released into the atmosphere. The catalytic upgradation of CO₂ into fuels and high-value chemicals, such as methanol, presents a valuable solution to mitigate the excess CO₂ in the air. Catalytic CO₂ hydrogenation to methanol (CTM) not only helps to slow down global warming but also addresses global food shortages by providing alternative energy sources. The development of trimetallic nanocatalysts represents a significant advancement in the field of CO₂ conversion, providing a promising solution for the production of renewable fuels. Trimetallic nanocatalysts offer a revolutionary approach to CO₂ conversion, combining enhanced catalytic activity, optimized nanoparticle design, and advanced support materials to produce renewable fuels efficiently. A clearer understanding of the catalytic processes will provide rational guidance for designing future CO₂ catalysts, contributing to the significant reduction of global CO₂ emissions. The research aligns with the ambitious goal of the European Commission to reduce CO₂ emissions from all sources by 80%-95% by 2050. This proposal focuses on enhancing the efficiency and efficacy of catalysts for CO₂ hydrogenation to methanol.