均的光驱动的水氧化,由甲复合物与所有无机配体一起催化
Yurii V Geletii1, Zhuangqun Huang, Yu Hou
1Department of Chemistry and the Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, USA.
Journal of the American Chemical Society
|June 4, 2009
概括
研究人员开发了一种可见光驱动的水氧化系统,使用催化剂,光敏剂和电子受体. 这种均质的系统有效地从水中产生氧气.
科学领域:
- 催化剂是一种催化剂.
- 摄影化学的使用.
- 绿色化学 绿色化学
背景情况:
- 水的氧化对于人工光合作用和可再生能源至关重要.
- 开发高效和稳定的分子催化剂来氧化水仍然是一个重大挑战.
- 可见光驱动系统为能源转换提供了一种可持续的方法.
研究的目的:
- 报告一种新的,均的,可见光驱动的水氧化分子系统.
- 描述开发的氧化水系统的效率和关键参数.
主要方法:
- 使用一种以为基础的氧化水催化剂 (1),其中包含一个由[SiW((10) O(32) ](8-) 连接体稳定的Ru(IV) ((4) O(4) 集群.
- 作为光敏感剂使用了三2,2'-二二) 二 ([Ru(bpy) 3] 2+)) 作为光敏感剂.
- 作为一个牺牲电子受体,内置过氧化硫酸盐 (S(2) O(8) ((2-)) 作为一个牺牲电子受体.
主要成果:
- 实现了快速的二氧化物形成,初始的循环频率大约为8 x 10 2 s 1 .
- 估计氧气演变的量子产量约为9%,表明光的有效利用.
- 展示了一个由可见光驱动的功能同质系统.
结论:
- 报告的系统代表了分子水氧化催化学的重大进步.
- 特定的催化剂,光敏感剂和电子受体的组合使可见光驱动的水分高效.
- 这项工作为进一步开发可持续的人工光合作用技术铺平了道路.
相关概念视频
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