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Photocatalytic CO₂ reduction to produce valuable chemicals and fuels using solar energy provides an appealing route to alleviate global energy and environmental problems. However, available semiconductor materials are less efficient to promote CO₂ conversion to energy-efficient fuels. In the current development, titanium carbide (Ti₃C₂) MXene as a co-catalyst with a high conductivity, abundant active sites, and large specific surface area, is a preeminent candidate to promote semiconductor photoactivity. This review provides an overview in the utilization of Ti₃C₂ as a promising co-catalyst for maximizing CO₂ reduction efficiency and product selectivity. In the mainstream, developments in Ti₃C₂ MXene-based composites for CO₂ conversion through different processes, such as CO₂ reduction with water, photocatalytic CO₂ methanation, and natural gas flaring reduction to synthesis gas, have been discussed …