Synergy between plasma and catalysis has long been recognized, but efforts to improve synergy and energy efficiency remain both highly desirable and challenging. Herein, β-Mo₂C nanorods were coupled with non-thermal plasma (NTP) to catalyze selective CO₂ reduction to CO by H₂ or CH₄. Unprecedented catalytic activity and selectivity were achieved without additional thermal input, and the turnover frequency (TOF) was an order of magnitude higher than that obtained during thermal catalysis. The porous-structured β-Mo₂C nanorods not only possessed large accessible surfaces but also facilitated charge deposition to generate a strong local electric field when NTP was coupled. The interplay between β-Mo₂C nanorods and NTP boosted the synergy and energy efficiency: the TOF and CO specific energy yield were 1.4–2 times and ∼10 times higher, respectively, than those of β-Mo₂C nanoparticles. This strategy of coupling regularly shaped catalytic materials with NTP provides new opportunities to improve the efficiency of plasma-assisted catalytic processes.

等离子体和催化作用之间的协同作用早已得到认可，但是提高协同作用和能效的努力仍然是高度期望和挑战性的。这里，β-沫₂ ç纳米棒加上非热等离子体（NTP）来催化选择性CO ₂由H还原成CO ₂或CH ₄。无需额外的热输入即可实现前所未有的催化活性和选择性，并且周转频率（TOF）比在热催化过程中获得的周转频率高一个数量级。多孔结构的β-沫₂ ç纳米棒不仅具有大的可及表面又促进电荷沉积，以产生强的局部电场时NTP偶联。β-Mo之间的相互作用_2个ç纳米棒和NTP升压后的协同作用和能量效率：TOF和CO的比能量收率分别为1.4-2倍和〜10倍，比β-Mo系的₂ Ç纳米颗粒。这种将规则形状的催化材料与NTP耦合的策略为提高等离子体辅助催化过程的效率提供了新的机会。