Time-resolved infrared spectroscopic investigation of roles of valence states of Cr in (La,Cr)-doped SrTiO3 photocatalysts
文献类型：期刊论文
| 作者 | Shen, Shuai1,2; Jia, Yushuai1,2; Fan, Fengtao1; Feng, Zhaochi1; Li, Can1 |
| 刊名 | chinese journal of catalysis
 |
| 出版日期 | 2013-11-01 |
| 卷号 | 34期号:11页码:2036-2040 |
| 关键词 | Time-resolved spectroscopy Chromium doping Strontium titanate Photocatalysis |
| 英文摘要 | the kinetics of photogenerated electrons in srtio3(la,cr) pretreated with either h-2 or o-2 were studied using time-resolved infrared spectroscopy. the x-ray photoelectron and raman spectra showed that the cr cations in the sample reduced with h-2 were all in cr3+, whereas those oxidized with o-2 were in mixed of cr3+ and cr6+. electrons excited with 355 and 532 nm light pulses showed the absorption of mid-ir light, and this was traced as a function of the time delay in a microsecond domain. the time-resolved results revealed that the decay rate of the photoinduced electrons with cr3+ was slower than that with cr6+, implying that trivalent cr contributed more to retarding recombination of photoinduced electrons and holes, and enhanced photocatalytic h-2 production activity. (c) 2013, dalian institute of chemical physics, chinese academy of sciences. published by elsevier b.v. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, applied ; chemistry, physical ; engineering, chemical |
| 研究领域[WOS] | chemistry ; engineering |
| 关键词[WOS] | visible-light irradiation ; photogenerated electrons ; absorption spectroscopy ; hydrogen-production ; raman-spectroscopy ; h-2 evolution ; doped srtio3 ; tio2 ; chromium ; pt/tio2 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000326769800011 |
| 公开日期 | 2015-11-10 |
| 源URL | [http://159.226.238.44/handle/321008/137990]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Dalian Natl Lab Clean Energy, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shen, Shuai,Jia, Yushuai,Fan, Fengtao,et al. Time-resolved infrared spectroscopic investigation of roles of valence states of Cr in (La,Cr)-doped SrTiO3 photocatalysts[J]. chinese journal of catalysis,2013,34(11):2036-2040. |
| APA | Shen, Shuai,Jia, Yushuai,Fan, Fengtao,Feng, Zhaochi,&Li, Can.(2013).Time-resolved infrared spectroscopic investigation of roles of valence states of Cr in (La,Cr)-doped SrTiO3 photocatalysts.chinese journal of catalysis,34(11),2036-2040. |
| MLA | Shen, Shuai,et al."Time-resolved infrared spectroscopic investigation of roles of valence states of Cr in (La,Cr)-doped SrTiO3 photocatalysts".chinese journal of catalysis 34.11(2013):2036-2040. |
入库方式： OAI收割
来源：大连化学物理研究所
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