Scholarlink

<p>Photocatalytic oxidation through semiconductor photocatalysis is an efficient and green technology for pollutant removal, which has been widely applied to degrade volatile organic chemicals under ambient conditions. However, most of reports focus on the reduction of VOCs concentration while ignore the generation of toxic intermediates, as well as the corresponding secondary pollution. Therefore, it is necessary to further explore how to timely achieve efficient and deep oxidation of VOCs. In this review, we undertake a detailed analysis of photocatalytic degradation of toluene, a representative compound of aromatic hydrocarbon VOCs, and identify the most capable phenolized pathway governed by hydroxyl radicals (•OH). With this pathway, no toxic intermediate like benzene is produced during the photocatalysis. The driving factor, oxygen vacancy (OV), for fueling the generation of •OH is highlighted and the specific approaches including doping engineering and co-catalyst loading that can create rich OVs in semiconductor photocatalysts are described. Furthermore, the challenges and opportunities faced by the phenolized pathway in the future development are prospected.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Directional deep oxidation of toluene via phenolized pathway—A review concerning dominant factors involved in photocatalysis

  • 期刊论文

  • 发表日期：

    2025年1月2日

查看全文
  • Mingxia Lu,
  • Jinmin Wu,
  • Yan Luo,
  • Yisheng Cao,
  • Lixia Yang,
  • Shuqu Zhang

摘要

Photocatalytic oxidation through semiconductor photocatalysis is an efficient and green technology for pollutant removal, which has been widely applied to degrade volatile organic chemicals under ambient conditions. However, most of reports focus on the reduction of VOCs concentration while ignore the generation of toxic intermediates, as well as the corresponding secondary pollution. Therefore, it is necessary to further explore how to timely achieve efficient and deep oxidation of VOCs. In this review, we undertake a detailed analysis of photocatalytic degradation of toluene, a representative compound of aromatic hydrocarbon VOCs, and identify the most capable phenolized pathway governed by hydroxyl radicals (•OH). With this pathway, no toxic intermediate like benzene is produced during the photocatalysis. The driving factor, oxygen vacancy (OV), for fueling the generation of •OH is highlighted and the specific approaches including doping engineering and co-catalyst loading that can create rich OVs in semiconductor photocatalysts are described. Furthermore, the challenges and opportunities faced by the phenolized pathway in the future development are prospected.