| Sites for High Efficient Photocatalytic Hydrogen Evolution on a Limited-Layered MoS2 Cocatalyst Confined on Graphene Sheets-The Role of Graphene | |
| Department | OSSO国家重点实验室 |
Min SX(敏世雄)1,2 ; Lu GX(吕功煊)1; Lv GX(吕功煊)
| |
| The second department | erc国家工程研究中心 |
| 2012 | |
| Source Publication | The Journal of Physical Chemistry C
 |
| ISSN | 1932-7447 |
| Volume | 116Issue:48Pages:25415-25424 |
| Abstract | The development of an advanced cocatalyst is critical for improving the efficiency of the photocatalytic hydrogen evolution reaction. Noble metals such as platinum (Pt) have been identified to be the most active cocatalyst for this reaction; however, due to their low-abundance, high cost, their usage in the scale-up setup is impeditive. Here, we report a high active cocatalyst, limited-layered MoS2 confined on RGO sheets as an alternative of Pt, for hydrogen evolution in dye-sensitized photocatalytic systems. Growing a MoS2 cocatalyst on RGO sheets provides more available catalytically edge sites and thus exhibits much higher activity than large aggregated pristine MoS2 particles under visible light irradiation (≥420 nm). The apparent quantum efficiency (AQE) of 24% at 460 nm over an Eosin Y-sensitized MoS2/RGO photocatalyst has been achieved. In addition, the electrical coupling and synergistic effect between MoS2 and RGO sheets greatly facilitate the efficient electron transfer from photoexcited dye to the active edge sites of MoS2; as a result, the prolonged lifetime of photogenerated electrons and the improved charge separation efficiency have been accomplished, and the photocatalytic hydrogen evolution activity has been enhanced significantly. This work demonstrates that the structural integration of MoS2 with RGO will be a new promising strategy to develop a high efficient and low-cost non-noble metal cocatalyst for solar hydrogen generation. |
| Subject Area | 物理化学与绿色催化 |
| DOI | 10.1021/jp3093786 |
| Funding Organization | the National Science Foundation of China (21173242);973 Program and 863 Program of Department of Sciences and Technology of China (Grant Nos. 2007CB613305;2009CB220003;2009AA05Z117) |
| Indexed By | SCI |
| If | 4.814 |
| Language | 英语 |
| Funding Project | 环境催化与清洁能源研究组;环境催化与氢能源研究组 |
| compositor | 第一作者单位 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/3829 |
| Collection | 羰基合成与选择氧化国家重点实验室（OSSO） 精细石油化工中间体国家工程研究中心（ERC） |
| Corresponding Author | Lv GX(吕功煊) |
| Affiliation | 1.Chinese Acad Sci, State Key Lab Oxo Synth & Select Oxidat, Lanzhou Inst Chem Phys, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 10080, Peoples R China |
| Recommended Citation GB/T 7714 | Min SX,Lu GX,Lv GX. Sites for High Efficient Photocatalytic Hydrogen Evolution on a Limited-Layered MoS2 Cocatalyst Confined on Graphene Sheets-The Role of Graphene[J]. The Journal of Physical Chemistry C,2012,116(48):25415-25424. |
| APA | Min SX,Lu GX,&吕功煊.(2012).Sites for High Efficient Photocatalytic Hydrogen Evolution on a Limited-Layered MoS2 Cocatalyst Confined on Graphene Sheets-The Role of Graphene.The Journal of Physical Chemistry C,116(48),25415-25424. |
| MLA | Min SX,et al."Sites for High Efficient Photocatalytic Hydrogen Evolution on a Limited-Layered MoS2 Cocatalyst Confined on Graphene Sheets-The Role of Graphene".The Journal of Physical Chemistry C 116.48(2012):25415-25424. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 50.J. Phys. Chem. C （579KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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