Promoted photoinduced charge separation and directional electron transfer over dispersible xanthene dyes sensitized graphene sheets for efficient solar H-2 evolution
文献类型：期刊论文
| 作者 | Min SX(敏世雄)1,2 ; Lu GX(吕功煊)1
|
| 刊名 | International Journal of Hydrogen Energy
 |
| 出版日期 | 2013 |
| 卷号 | 38期号:5页码:2106-2116 |
| 关键词 | Dispersible graphene sheets Rose Bengal sensitization Electron transfer Charge separation H-2 evolution Visible light illumination |
| ISSN号 | 0360-3199 |
| 通讯作者 | 吕功煊 |
| 英文摘要 | Directional electron transfer and effective charge separation facilitated by graphene sheets have provided an inspiring approach to enhance the efficiencies of photoelectric conversion and photocatalysis. Herein, we demonstrated the feasibility of constructing a highperformance of the dye-sensitized H2 evolution system using dispersible grapheme sheets as both efficient electron transfer carrier and catalyst scaffold. Among the xanthene dyes sensitized H2 evolution catalysts in this study, photocatalyst of Rose Bengal (RB) sensitized graphene decorated with Pt is the most active one and exhibits the highest apparent quantum efficiency (AQE) of 18.5% at wavelength of 550 nm and rather long-term stability for H2 evolution. Dispersible graphene sheets can not only capture electrons from the excited dye and then transfer them to the decorated catalysts efficiently for improving charge separation with a small energy loss, but also afford large interfaces for highly dispersing catalyst nanoparticles with more active sites, thereby significantly enhancing the H2 evolution efficiency than graphite oxide (GO) and multiwall carbon nanotubes (MWCNTs). This work proposes a potential strategy to develop efficient photocatalytic systems for solar-energy-conversion and provides a new insight into mechanistic study of photoinduced electron transfer by effective synergetic combination of dispersible grapheme sheets with an efficient dye and a H2 evolution catalyst. |
| 学科主题 | 物理化学与绿色催化 |
| 收录类别 | SCI |
| 资助信息 | the National Science Foundation of China (21173242);973 Program;863 Program of Department of Sciences and Technology of China (Grant Nos. 2007CB613305;2009CB22003;2009AA05Z117) |
| 语种 | 英语 |
| WOS记录号 | WOS:000315475100009 |
| 公开日期 | 2013-12-30 |
| 源URL | [http://210.77.64.217/handle/362003/4931]  |
| 专题 | 兰州化学物理研究所_OSSO国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 10080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Min SX,Lu GX. Promoted photoinduced charge separation and directional electron transfer over dispersible xanthene dyes sensitized graphene sheets for efficient solar H-2 evolution[J]. International Journal of Hydrogen Energy,2013,38(5):2106-2116. |
| APA | Min SX,&Lu GX.(2013).Promoted photoinduced charge separation and directional electron transfer over dispersible xanthene dyes sensitized graphene sheets for efficient solar H-2 evolution.International Journal of Hydrogen Energy,38(5),2106-2116. |
| MLA | Min SX,et al."Promoted photoinduced charge separation and directional electron transfer over dispersible xanthene dyes sensitized graphene sheets for efficient solar H-2 evolution".International Journal of Hydrogen Energy 38.5(2013):2106-2116. |
入库方式： OAI收割
来源：兰州化学物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。