Recent development in metal oxide-based core–shell material for CO2 capture and utilisation

Metal oxide-based core–shell nanoparticles (CSNs) have demonstrated great advantages in CO 2 adsorption and utilisation. Metal oxide is an excellent material because of its basicity, which can aid in the production of higher core–shell catalytic reactions. Metal oxide can be employed as a core to reduce pore blockage and increase the shell's surface area. Meanwhile, it can also be utilised as a shell to improve the basic sites for CO 2 interaction, therefore increasing CO 2 adsorption performance. This review focuses on the use of metal oxides as the core or shell of CSNs. The synthesis of CSNs with various shapes and properties via different approaches was discussed. In addition, the application of CSNs in CO 2 adsorption and utilisation was highlighted. Significant properties of CSNs such as porosity, surface area, and basicity are crucial for excellent CO 2 adsorption and CO 2 conversion.