Ultrathin Nanosheets for Photocatalysis

  • ChemPubSoc Europe Logo
  • Author: Hayley Charville
  • Published Date: 09 February 2015
  • Source / Publisher: ChemCatChem/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
thumbnail image: Ultrathin Nanosheets for Photocatalysis

Related Societies

Photocatalytic H2 production attracts much attention and there are numerous semiconductors that are capable of this photochemical reaction. For example, two-dimensional perovskite niobate nanosheets prepared by the exfoliation of bulk layered AB2Nb3O10 (A = H, Rb, K, Cs; B = Ca, Pb, Sr) have attracted great interest. However, the exfoliation of niobates is a time-consuming process and the low yields restrict the mass preparation and applications of these exfoliated perovskite nanosheets.


Yuchao Hu and Liejin Guo, Xi'an Jiaotong University, China, have developed a high-powered ultrasonic method for the rapid and high-yielding exfoliation of HPb2Nb3O10 into (TBA/H)Pb2Nb3O10 (TBA = tetrabutylammonium) nanosheets. These nanosheets were used as a photocatalyst for H2 production from methanol solution under visible light irradiation and showed increased activity when compared with bulk HPb2Nb3O10. This enhanced performance is mainly because of a shortened migration distance for the photoexcited electrons.


The described ultrasonic-assisted exfoliation method could also be applied to the preparation of other niobate nanosheets.


Article Views: 2627

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

Bookmark and Share

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission. more


CONNECT:

ChemistryViews.org on Facebook

ChemistryViews.org on Twitter ChemistryViews.org on YouTube ChemistryViews.org on LinkedIn Sign up for our free newsletter


A product of ChemPubSoc Europe (16 European Chemical Societies)and Wiley-VCH