For the first time, this paper demonstrates a synergistic effect from the combination of a gliding arc discharge plasma with a photocatalyst TiO₂ for CO₂ dissociation. The effects of adding a tray downstream the discharge and the combination of the catalyst with plasma have been investigated. Two different combination modes of plasma catalysis, i.e., in-plasma catalysis and post-plasma catalysis, have been evaluated with the emphasis on the analysis of potential mechanisms. The results show that modifying the gliding arc reactor by the addition of a tray can enhance the fraction of gas treated by plasma, thus improving the reaction performance. An exceptional synergistic effect of combining the gliding arc discharge with TiO₂ for CO₂ activation forms in the in-plasma catalysis mode. The presence of TiO₂ significantly enhances the CO₂ conversion by 138% and the energy efficiency by 133% at a flow rate of 2 L/min. The plasma activation effect, which produces energetic electrons that can create the electron–hole pairs on the catalyst surface, is believed to be the major contributor to the generation of the plasma catalysis synergy. This mechanism has been further evidenced by the negligible influence of the post-plasma catalysis on the reaction performance.

中文翻译：

---

改进的滑动电弧反应器中等离子体的CO 2催化增强

本文首次展示了滑动电弧放电等离子体与光催化剂TiO _2的组合对CO ₂分解的协同作用。已经研究了在排放物下游增加一个塔板以及催化剂与等离子体结合的效果。等离子体催化的两种不同组合模式，即。等离子体内催化和等离子体后催化已被评估，重点放在潜在机理的分析上。结果表明，通过增加塔板改造滑弧反应器可以提高等离子体处理的气体比例，从而提高反应性能。将滑动电弧放电与TiO _2结合用于CO的特殊协同作用在等离子体内催化模式下有_2种活化形式。TiO ₂的存在以2 L / min的流速显着提高了CO ₂转化率138％和能效133％。等离子体活化效应产生能在催化剂表面形成电子-空穴对的高能电子，被认为是产生等离子体催化协同作用的主要因素。等离子体后催化对反应性能的影响可忽略，进一步证明了该机理。