影像科学与光化学2018，Vol.36Issue(2)：171-177,7.DOI:10.7517/j.issn.1674-0475.2018.02.006
甲醛气体在ZnO表面光降解的机理研究
Photocatalytic Degradation of Gaseous CH2O over ZnO Nanoparticles
李玲 1杜云舒 2王璇 1韩建 2王传义1
作者信息
- 1. 中国科学院新疆理化技术研究所环境科学与技术研究室,新疆乌鲁木齐830011
- 2. 中国科学院大学,北京100049
- 折叠
摘要
Abstract
Nanosized ZnO particles have been synthesized by sol-gel method and studied for photocatalytic activities toward gaseous CH2O degradation.It was found that CH2O adsorbed on ZnO nanoparticles can be oxidized to CO2 under UV light irradiation with the coexistence of either O2 or H2O.However,different from aqueous condition where H2O molecules are first oxidized to be free radicals then react with CH2O,direct photoactivation of O2 becomes the dominant step in promoting photocatalytic degradation efficiency of gaseous CH2O.The results reveal a new reaction mechanism that can be important for further modification of photocatalyst for gaseous CH2O degradation.关键词
ZnO/光催化甲醛/光活化氧Key words
ZnO/photocatalytic degradation of CH2O/photoactivation of O2引用本文复制引用
李玲,杜云舒,王璇,韩建,王传义..甲醛气体在ZnO表面光降解的机理研究[J].影像科学与光化学,2018,36(2):171-177,7.
