Kill two birds with one stone: simultaneous removal of volatile organic compounds and ozone secondary pollution by a novel photocatalytic process

文献类型： 外文期刊

第一作者： Sui, Yifan

作者： Sui, Yifan;Sun, Xiaohu;Guan, Jie;Chen, Zeqiu;Zhu, Xinjie;Li, Xiuli;Shen, Jiaowen;Zhang, Xiaojiao;Guo, Yaoguang;Lou, Xiaoyi;Liu, Xiaomei;Zhang, Gangfeng;Zhang, Rui-Qin

作者机构：

期刊名称：RSC ADVANCES （ 影响因子：3.9； 五年影响因子：3.9 ）

ISSN：

年卷期： 2024 年 14 卷 21 期

页码：

收录情况： SCI

摘要： Volatile organic compounds (VOCs) originating from diverse sources with complex compositions pose threats to both environmental safety and human health. Photocatalytic treatment of VOCs has garnered attention due to its high efficacy at room temperature. However, the intricate photochemical reaction generates ozone (O3), causing secondary pollution. Herein, our work developed a novel "synergistic effect" system for photocatalytic co-treatment of VOCs and O3 secondary pollution. Under the optimized reactor conditions simulated with computational fluid dynamics (CFD), MgO-loaded g-C3N4 composites (MgO/g-C3N4) were synthesized as efficient catalysts for the photocatalytic synergistic treatment process. Density functional theory (DFT) calculations, characterization, and electron paramagnetic resonance (EPR) tests revealed that the addition of MgO reduced the band gap of g-C3N4, and increased O3 molecule adsorption in the composites, efficiently harnessing the synergistic effect of O3 to generate a significant quantity of reactive oxygen radicals, thereby facilitating the removal of VOCs and O3. This study provides new insights for simultaneous elimination of VOCs and O3 secondary pollution by a photocatalytic process. Synergistic treatment of VOCs and O3 secondary pollution in the optimal photocatalytic reactor.

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