中国科学院大连化学物理研究所机构知识库
Advanced  
DICP OpenIR  > 中国科学院大连化学物理研究所  > 期刊论文
题名: Excitation Wavelength Dependence of Photocatalyzed Oxidation of Methanol on TiO2(110)
作者: Wang, Zhi-qiang1;  Hao, Qun-qing1;  Zhou, Chuan-yao1;  Dai, Dong-xu1;  Yang, Xue-ming1
关键词: Titanium dioxide ;  Photocatalysis ;  Excitation wavelength dependence ;  Temperature-programmed desorption
刊名: CHINESE JOURNAL OF CHEMICAL PHYSICS
发表日期: 2015-08-01
DOI: 10.1063/1674-0068/28/cjcp1507147
卷: 28, 期:4, 页:459-464
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Physics
英文摘要: Post-irradiation temperature-programmed desorption (TPD) has been used to study the photo catalyzed oxidation of methanol on TiO2(110) surface under the irradiation of 360, 380 and 400 nm light. The photocatalytic process initiated by ultraviolet light of different wavelength are similar. Methanol has been photocatalytically converted into formaldehyde, and the released hydrogen atoms transfer to the neighboring twofold coordinated oxygen to form bridging hydroxyls. The reaction rate, however, is strongly wavelength dependent. The reaction rate under 360 nm light irradiation is 4.8 times of that in the case of 400 nm exposure, consistent with a previous femtosecond time-resolved absorption measurement on TiO2 which shows the faster charge carrier recombination in the near-band-gap than the over-band-gap excitation. So far, the underlying factors which govern the excitation wavelength dependence of photocatalytic activity of TiO2 and other photocatalysts remain unclear, and future studies are needed to address this important issue.
关键词[WOS]: MOLECULAR-HYDROGEN FORMATION ;  FRACTAL REACTION-KINETICS ;  TITANIUM-DIOXIDE ;  SURFACE SCIENCE ;  PHOTON ENERGY ;  TIO2 PHOTOCATALYSIS ;  METHYL FORMATE ;  ADSORPTION ;  WATER ;  DISSOCIATION
语种: 英语
WOS记录号: WOS:000361418000013
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146548
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

Files in This Item:

There are no files associated with this item.


作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China

Recommended Citation:
Wang, Zhi-qiang,Hao, Qun-qing,Zhou, Chuan-yao,et al. Excitation Wavelength Dependence of Photocatalyzed Oxidation of Methanol on TiO2(110)[J]. CHINESE JOURNAL OF CHEMICAL PHYSICS,2015,28(4):459-464.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Wang, Zhi-qiang]'s Articles
 [Hao, Qun-qing]'s Articles
 [Zhou, Chuan-yao]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Wang, Zhi-qiang]‘s Articles
 [Hao, Qun-qing]‘s Articles
 [Zhou, Chuan-yao]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Powered by CSpace