...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Photogeneration of hydrogen from water using CdSe nanocrystals demonstrating the importance of surface exchange
【24h】

Photogeneration of hydrogen from water using CdSe nanocrystals demonstrating the importance of surface exchange

机译：Photogeneration of hydrogen from water using CdSe nanocrystals demonstrating the importance of surface exchange

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相关主题

摘要

Unique tripodal S-donor capping agents with an attached carboxylate are found to bind tightly to the surface of CdSe nanocrystals (NCs), making the latter water soluble. Unlike that in similarly solubilized CdSe NCs with one-sulfur or two-sulfur capping agents, dissociation from the NC surface is greatly reduced. The impact of this behavior is seen in the photochemical generation of H_2 in which the CdSe NCs function as the light absorber with metal complexes in aqueous solution as the H_2-forming catalyst and ascorbic acid as the electron donor source. This precious-metal- free system for H_2 generation from water using Co(bdt)2- (bdt, benzene-1,2-dithiolate) as the catalyst exhibits excellent activity with a quantum yield for H_2 formation of 24 at 520 nm light and durability with >300,000 turnovers relative to catalyst in 60 h.

著录项

获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号