Magnetic field-assisted photocatalytic CO2 reduction

Abstract

This study reviews the recent progress in magnetic field-assisted photocatalytic carbon dioxide (CO₂) reduction. With the intensification of global warming and environmental pollution, reducing greenhouse gas emissions, especially CO₂, has become a global need. Photocatalysis technology has received a lot of attention for its potential in pollution treatment and energy conversion. Initially, this review delves into the magneto-thermal effect, negative magnetoresistance effect, Lorentz force and spin polarization, which are generally used to improve the photocatalytic efficiency. Then, the mechanism of magnetic field-assisted photocatalysis and its application in CO₂ reduction are discussed in detail. By analyzing the influence of magnetic field on the separation and transport of photogenerated charges and the role of magnetothermal effect in the photocatalysis process, this review study summarizes the significant advantages of magnetic field-assisted photocatalysis technology in improving the efficiency of CO₂ reduction. Finally, the challenges and future research directions in this field, including an in-depth understanding of the specific mechanism of magnetic field effect, optimization of photocatalytic material design, and exploration of multi-field synergies, with a view to promoting the widespread application of magnetic field-assisted photocatalysis technology, are presented.