Perspective of an external magnetic field-assisted catalytic process for green H2 generation and CO2 conversion

Abstract

H₂ generation via water splitting and CO₂ conversion to value-added chemicals are two key reactions that have immense importance for deep decarbonization. Being energy-intensive processes, water splitting and CO₂ conversion are often carried out in the presence of catalysts. Electrocatalysis, photocatalysis and thermocatalysis are three major catalytic conversion pathways for such conversions. To boost the energy efficiency of the catalytic conversions, the role of an external magnetic field (as an external physical force) has been explained in detail in this review. Fundamentals of water splitting and CO₂ conversion, the underlying mechanism in the presence of a magnetic field, and the role of different types of magnetic fields and their effect on the chemical conversion and energy efficiency of the mentioned processes have been elaborated in this article. In conclusion, the future scope to utilize the present magnetic field-based green process at a large scale has been discussed elaborately.