引用本文:
【打印本页】   【HTML】   【下载PDF全文】   View/Add Comment  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 1836次   下载 1304 本文二维码信息
码上扫一扫!
分享到: 微信 更多
O2(1Δg) Deactivation on O2-adsorbed Metal Surfaces
Shu-yan Du*,Jing Leng,He-ping Yang,Guo-he Sha,Cun-hao Zhang
Author NameAffiliationE-mail
Shu-yan Du* State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China sydu@dicp.ac.cn 
Jing Leng State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China  
He-ping Yang State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China  
Guo-he Sha State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China  
Cun-hao Zhang State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China  
Abstract:
A flow system was set up to measure the quenching probability γ of O2(1Δg) on various O2-adsorbed metal surfaces including Cu, Cr, Ni, and Ag. γ increased with both the duration of the experiment and the O2(1Δg) concentration. After several hours evacuation to a few Pa, γ can return to its original value. A deactivation mechanism of O2(1Δg) is suggested by considering first the weak chemisorption of O2(1Δg) on the surface adsorption sites, followed by the near resonant energy transfer between the gas phase O2(1Δg) and surface O2(1g-). A phenomenological model in accord with the experimental fact has been proposed together with relevant kinetic equations.
Key words:  Singlet oxygen, Surface quenching, Deactivation probability
FundProject:
O2分子吸附的金属表面的O2(1Δg)猝灭
杜姝彦*,冷静,杨何平,沙国河,张存浩
摘要:
建立了一套流动装置测量单重态氧O2(1Δg)在O2分子吸附的金属Cu、Cr、Ni和Ag表面的猝灭几率. 随实验时间和O2(1Δg)浓度增加,猝灭几率增加. 当上述金属样品在几帕斯卡的真空度下暴露数小时后猝灭几率会回到原先水平. 提出了一种基于表面吸附位上弱化学吸附的表面吸附氧分子O2(1g
关键词:  单重态氧,表面猝灭,猝灭几率
DOI:10.1088/1674-0068/24/03/256-260
分类号: