Recent advances in the catalytic oxidation of VOCs over core–shell and yolk-shell structured catalysts

Volatile organic compounds (VOCs) are key precursors in atmospheric haze formation, posing significant threats to both humans and ecosystems. Controlling VOCs is vital for environmental protection and public health preservation. The unique structure of core–shell and yolk-shell materials has attracted attention in the catalytic oxidation of VOCs. The tight interface between the core and shell facilitates the generation of Strong Metal-Support Interaction (SMSI), which accelerates the rapid transfer of electrons between the core and shell. Furthermore, the distinctive yolk-shell morphology enables reactant confinement within internal cavities, effectively concentrating VOC molecules and facilitating their oxidation. In this review, the advances of the catalytic oxidation of VOCs over core–shell and yolk-shell structured catalysts have been described and discussed. The correlation between structure and catalytic performance has been emphasized, providing insights into the development of more efficient and durable catalysts for the catalytic removal of VOCs. Finally, challenges and prospects for core–shell and yolk-shell catalysts are proposed, which are expected to advance their practical application in meeting future stringent emission regulations.