Selective activation of peroxymonosulfate (PMS) represents an efficient route to generate the reactive oxygen species (ROS) for the degradation and deep mineralization of organic pollutants, but its activity and selectivity are remarkably lower than what is needed. Herein, an S‐scheme heterojunction is developed to effectively modify surface electronic properties and introduce abundant oxygen vacancies, thereby enabling photo‐enhanced PMS activation for selective removal of gaseous toluene. S‐scheme heterojunction is fabricated by in situ growth of ultrathin Co3O4 nanoparticles on g‐C3N4 nanosheets through a rapid plasma treatment. The electronic field at the S‐scheme heterostructure interface of Co3O4/g‐C3N4 (COCN) facilitates charge transfer, selectively removing low‐redox electrons and holes while separating high‐redox ones. Photo‐excited electrons promote the Co3+/Co2+ redox cycle, thereby enhancing ROS generation and creating continuous PMS activation sites. The COCN catalyst demonstrates remarkably high degradation efficiency (90.2%) and mineralization rate (68.5%) for flowing gaseous toluene in aqueous solution. This study thus provides a feasible strategy for plasma‐induced electronic modulation and offers new insights for future heterojunction design aimed at efficient PMS activation.

中文翻译：

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等离子体诱导的 S 型异质结构建可实现光增强过氧一硫酸盐活化以去除气态甲苯


过一硫酸盐 （PMS） 的选择性活化是产生活性氧 （ROS） 以降解和深层矿化有机污染物的有效途径，但其活性和选择性明显低于所需水平。在此，开发了一种 S 型异质结来有效改变表面电子性质并引入丰富的氧空位，从而实现光增强 PMS 活化以选择性去除气态甲苯。S 型异质结是通过快速等离子体处理在 g-C3N4 纳米片上原位生长超薄 Co3O4 纳米颗粒来制造的。Co3O4/g-C3N4 （COCN） 的 S 型异质结构界面上的电子场促进了电荷转移，选择性地去除低氧化还原电子和空穴，同时分离高氧化还原电子和空穴。光激发电子促进 Co3+/Co2+ 氧化还原循环，从而增强 ROS 的产生并产生连续的 PMS 激活位点。COCN 催化剂对水溶液中流动的气态甲苯表现出非常高的降解效率 （90.2%） 和矿化率 （68.5%）。因此，本研究为等离子体诱导的电子调制提供了一种可行的策略，并为未来旨在高效激活 PMS 的异质结设计提供了新的见解。