The development of traditional photocatalysis and peroxymonosulfate activation is limited due to the stable removal and mineralization of mobile phase VOC, and the synergistic mechanism of the two processes is ignored. Quasi-CoFe PBA/g-C₃N₄ (H-CF PBA/g-C₃N₄) heterojunction was first designed and synthesized for the photocatalytic-enhanced PMS activation to degrade toluene. The construction of Quasi-Fe PBA with abundant CN vacancy increases the active metal site and enhances the light absorption and electron transport, promoting the synergistic effect. The built-in electric field between H-CoFe PBA and g-C₃N₄ further promotes efficient separation and transfer of photogenerated charge carriers. This synergy significantly boosts PMS activation, producing more reactive oxygen species and achieving efficient toluene mineralization. The H-CoFe PBA/g-C₃N₄ heterojunction achieved 91 % toluene degradation rate and 77 % mineralization rate, maintaining stability after five cycles, outperforming individual photocatalysis or PMS activation. Continuous-flow experiments revealed the feasibility of engineering applications. Thus, it is reasonable to believe that the synergistic catalytic system of heterojunction functional materials provides a new perspective for the removal of flowing-phase VOCs under low-temperature conditions.

中文翻译：

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准 PBA 异质结中的 CN 空位工程提高了光协同过氧一硫酸盐活化效率


由于流动相 VOC 的稳定去除和矿化，传统光催化和过氧一硫酸盐活化的发展受到限制，忽略了两者过程的协同机制。准CoFe PBA/g-C₃N₄ （H-CF PBA/g-C₃N₄） 异质结是首次设计和合成用于光催化增强 PMS 活化以降解甲苯。构建具有丰富 CN 空位的准铁 PBA 增加了活性金属位点，增强了光吸收和电子传输，促进了协同效应。H-CoFe PBA 和 g-C₃N₄ 之间的内置电场进一步促进了光生载流子的高效分离和转移。这种协同作用显着促进了 PMS 的活化，产生更多的活性氧并实现高效的甲苯矿化。H-CoFe PBA/g-C₃N₄ 异质结实现了 91% 的甲苯降解率和 77% 的矿化率，在五个循环后保持稳定性，优于单独的光催化或 PMS 活化。连续流实验揭示了工程应用的可行性。因此，有理由相信异质结功能材料的协同催化体系为低温条件动相 VOCs 的去除提供了新的视角。