Overall photodecomposition of water on a layered niobiate catalyst

The photolysis of water into hydrogen and oxygen is a reaction involving the transformation of a high amount of energy. Recently, it was found that a photocatalyst having a layered structure gave not only a behaviour different from that observed with a conventional bulk-solid type semiconductor phot...

Full description

Saved in:
Bibliographic Details
Published in:Catalysis today 1990-10, Vol.8 (1), p.77-84
Main Authors: Domen, Kazunari, Kudo, Akihiko, Tanaka, Akira, Onishi, Takaharu
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The photolysis of water into hydrogen and oxygen is a reaction involving the transformation of a high amount of energy. Recently, it was found that a photocatalyst having a layered structure gave not only a behaviour different from that observed with a conventional bulk-solid type semiconductor photocatalyst, but also that the layered photocatalyst gave a stable and high photocatalytic activity for water decomposition. A new type of photocatalyst, Ni-K 4Nb 6O 17, has ultrafine particles of nickel metal in the interlayer spaces. It has a structure of what may be called a “two-dimensional photocatalyst,” which decomposes intercalated water molecules. It is also interesting in its mechanism in which it works in the decomposition of water. In this paper, our recent results concerning this new type of photocatalyst are reviewed.
ISSN:0920-5861
1873-4308
DOI:10.1016/0920-5861(90)87009-R