Bi 2 WO 6 quantum dot-intercalated ultrathin montmorillonite nanostructure and its enhanced photocatalytic performance
No Thumbnail Available
Authors
Sun, Songmei
Wang, Wenzhong
Jiang, Dong
Zhang, Ling
Li, Xiaoman
Zheng, Yali
An, Qi
Issue Date
2014
Type
Citation
Language
Keywords
Alternative Title
Abstract
The kinetic competition between electron-hole recombination and water oxidation is a key limitation for the development of efficient solar water splitting materials. In this study, we present a solution for solving this challenge by constructing a quantum dot-intercalated nanostructure. For the first time, we show the interlayer charge of the intercalated nanostructure can significantly inhibit the electron-hole recombination in photocatalysis. For Bi2WO6 quantum dots (QDs) intercalated in a montmorillonite (MMT) nanostructure as an example, the average lifetime of the photogenerated charge carriers was increased from 3.06 μs to 18.8 μs by constructing the intercalated nanostructure. The increased lifetime markedly improved the photocatalytic performance of Bi2WO6 both in solar water oxidation and environmental purification. This work not only provides a method to produce QD-intercalated ultrathin nanostructures but also a general route to design efficient semiconductor-based photoconversion materials for solar fuel generation and environmental purification.
Description
Citation
Publisher
Springer Verlag
License
In Copyright
Journal
Volume
Issue
PubMed ID
ISSN
1998-0124