Nanostructured Materials for Photothermal Carbon Dioxide Hydrogenation: Regulating Solar Utilization and Catalytic Performance

Converting carbon dioxide (CO 2 ) into value-added fuels or chemicals through photothermal catalytic CO 2 hydrogenation is a promising approach to alleviate the energy shortage and global warming. Understanding the nanostructured material strategies in the photothermal catalytic CO 2 hydrogenation process is vital for designing photothermal devices and catalysts and maximizing the photothermal CO 2 hydrogenation performance. In this Perspective, we first describe several essential nanomaterial design concepts to enhance sunlight absorption and utilization in photothermal CO 2 hydrogenation. Subsequently, we review the latest progress in photothermal CO 2 hydrogenation into C 1 (e.g., CO, CH 4, and CH 3 OH) and multicarbon hydrocarbon (C 2+ ) products. Finally, the relevant challenges and opportunities in this exciting research realm are discussed. This perspective provides a comprehensive understanding for the light–heat synergy over nanomaterials and instruction for rational photothermal catalyst design for CO 2 utilization.