論文

2015年1月

Photocatalytic Reaction Centers in Two-Dimensional Titanium Oxide Crystals

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
  • Shintaro Ida
  • ,
  • Namhoon Kim
  • ,
  • Elif Ertekin
  • ,
  • Sakae Takenaka
  • ,
  • Tatsumi Ishihara

137
1
開始ページ
239
終了ページ
244
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1021/ja509970z
出版者・発行元
AMER CHEMICAL SOC

Co-catalysts play an important role in photocatalytic water splitting. The co-catalyst is generally deposited in the form of nanoparticles on the catalyst surface, and is believed to provide water oxidation and reduction sites. However, the minimum size of a co-catalyst that can function as a reaction site and the detailed local environment of the photocatalytic reaction centers are not yet fully understood. Here, we show that even isolated single-atom Rh dopants in two-dimensional titanium oxide crystals can effectively act as co-catalysts for the water-splitting reaction. At an optimal doping concentration, the hydrogen production rate is increased substantially in comparison to that found with the undoped crystals. We also present first-principles simulations based on density functional theory to provide insights into the atomic-scale mechanism by which the isolated Rh dopants induce changes to the dissociation reaction energy landscape. These results provide new insights for better understanding the role of the co-catalyst in the photocatalytic reaction.

リンク情報
DOI
https://doi.org/10.1021/ja509970z
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000348483500051&DestApp=WOS_CPL
URL
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84921033475&origin=inward
ID情報
  • DOI : 10.1021/ja509970z
  • ISSN : 0002-7863
  • Web of Science ID : WOS:000348483500051

エクスポート
BibTeX RIS