Vectorial Electron Transfer for Improved Hydrogen Evolution by Mercaptopropionic-Acid-Regulated CdSe Quantum-Dots-TiO2-Ni(OH)(2) Assembly
文献类型：期刊论文
| 作者 | Yu, S; Li, ZJ; Fan, XB; Li, JX; Zhan, F; Li, XB; Tao, Y; Tung, CH; Wu, LZ; Zhan F(展飞)
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| 刊名 | CHEMSUSCHEM
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| 出版日期 | 2015 |
| 卷号 | 8期号:4页码:642-649 |
| 关键词 | electron transfer hydrogen nickel photosynthesis quantum dots |
| 英文摘要 | A visible-light-induced hydrogen evolution system based on a CdSe quantum dots (QDs)-TiO2-Ni(OH)(2) ternary assembly has been constructed under an ambient environment, and a bifunctional molecular linker, mercaptopropionic acid, is used to facilitate the interaction between CdSe QDs and TiO2. This hydrogen evolution system works effectively in a basic aqueous solution (pH11.0) to achieve a hydrogen evolution rate of 10.1mmolg(-1)h(-1) for the assembly and a turnover frequency of 5140h(-1) with respect to CdSe QDs (10h); the latter is comparable with the highest value reported for QD systems in an acidic environment. X-ray photoelectron spectroscopy, X-ray absorption spectroscopy, and control experiments demonstrate that Ni(OH)(2) is an efficient hydrogen evolution catalyst. In addition, inductively coupled plasma optical emission spectroscopy and the emission decay of the assembly combined with the hydrogen evolution experiments show that TiO2 functions mainly as the electron mediator; the vectorial electron transfer from CdSe QDs to TiO2 and then from TiO2 to Ni(OH)(2) enhances the efficiency for hydrogen evolution. The assembly comprises light antenna CdSe QDs, electron mediator TiO2, and catalytic Ni(OH)(2), which mimics the strategy of photosynthesis exploited in nature and takes us a step further towards artificial photosynthesis. |
| 学科主题 | Chemistry |
| 类目[WOS] | Chemistry, Multidisciplinary |
| 收录类别 | SCI ; EI |
| WOS记录号 | WOS:000349954400011 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/228274]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 推荐引用方式 GB/T 7714 | Yu, S,Li, ZJ,Fan, XB,et al. Vectorial Electron Transfer for Improved Hydrogen Evolution by Mercaptopropionic-Acid-Regulated CdSe Quantum-Dots-TiO2-Ni(OH)(2) Assembly[J]. CHEMSUSCHEM,2015,8(4):642-649. |
| APA | Yu, S.,Li, ZJ.,Fan, XB.,Li, JX.,Zhan, F.,...&陶冶.(2015).Vectorial Electron Transfer for Improved Hydrogen Evolution by Mercaptopropionic-Acid-Regulated CdSe Quantum-Dots-TiO2-Ni(OH)(2) Assembly.CHEMSUSCHEM,8(4),642-649. |
| MLA | Yu, S,et al."Vectorial Electron Transfer for Improved Hydrogen Evolution by Mercaptopropionic-Acid-Regulated CdSe Quantum-Dots-TiO2-Ni(OH)(2) Assembly".CHEMSUSCHEM 8.4(2015):642-649. |
入库方式： OAI收割
来源：高能物理研究所
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