Tailoring Catalyst Structure and Function via Nonthermal Plasma for Greenhouse Gas Valorization

Nonthermal plasma (NTP) technology is emerging as a transformative engineering tool for the rational design and synthesis of advanced catalysts, addressing the critical limitations of conventional high‐temperature preparation methods. Operating under mild conditions, the unique nonequilibrium environment of NTP—rich in energetic electrons, ions, and reactive radicals—enables precise, multiscale control over catalyst properties. This allows for the creation of highly dispersed nanoparticles, tailored defect structures, and enhanced metal–support interactions that are often inaccessible via traditional thermal routes. This review provides a comprehensive overview of recent progress in applying NTP specifically as a synthesis and modification strategy to engineer high‐performance catalysts for the valorization of key greenhouse gases, namely CO 2 and CH 4 . We focus on how these NTP‐engineered catalysts exhibit superior activity, selectivity, and stability in critical reactions, including CO 2 hydrogenation, electrocatalytic and photocatalytic CO 2 reduction, and methane reforming. By elucidating the structure–performance relationships established through plasma‐based engineering, this review highlights the unique advantages of NTP in catalyst design and provides insights for the development of next‐generation catalysts for sustainable chemical production.