乙醛
光化学
光催化
激进的
化学
醋酸
活性氧
催化作用
氧气
有机化学
生物化学
乙醇
作者
Zixiang Xu,Wenqiang Qu,Qiuying Yi,Danhong Cheng,Dengsong Zhang
标识
DOI:10.1016/j.apcatb.2024.123763
摘要
The visible-light photocatalytic elimination of indoor acetaldehyde, a prevalent volatile organic compound, remains a significant challenge. Despite that tungsten oxide photocatalysts emerge as promising catalysts for acetaldehyde degradation indoors, their energy band structure often limits the removal performance by favoring the generation of a single reactive oxygen species. Herein, we showed a 5d orbital-reconstructed tungsten-based photocatalyst induced by g-C3N4 support, notably enhancing acetaldehyde elimination under visible light. Experimental and theoretical findings demonstrated that the 5d orbital reconstruction induced an upward shift in the unoccupied orbital of tungsten site, thereby facilitating the generation of superoxide radicals. Furthermore, hydroxy radicals can efficiently convert acetaldehyde into acetic acid, followed by the rapid elimination of acetic acid intermediates. This synergistic effect among multiple oxygen species significantly amplifies acetaldehyde elimination indoors, and offers new insights into the interactions between reactive species and pollutants in photocatalytic environmental applications.
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