Bi2WO6 quantum dot-intercalated ultrathin montmorillonite nanostructure and its enhanced photocatalytic performance

Songmei Sun, Wenzhong Wang, Dong Jiang, Ling Zhang, Xiaoman Li, Yali Zheng, Qi An

Research output: Contribution to journalArticle

30 Citations (Scopus)

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. [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)1497-1506
Number of pages10
JournalNano Research
Volume7
Issue number10
DOIs
Publication statusPublished - Oct 31 2014

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Bentonite
Clay minerals
Semiconductor quantum dots
Nanostructures
Purification
Water
Oxidation
Electrons
Photocatalysis
Charge carriers
Semiconductor materials
Kinetics

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Electrical and Electronic Engineering

Cite this

Bi2WO6 quantum dot-intercalated ultrathin montmorillonite nanostructure and its enhanced photocatalytic performance. / Sun, Songmei; Wang, Wenzhong; Jiang, Dong; Zhang, Ling; Li, Xiaoman; Zheng, Yali; An, Qi.

In: Nano Research, Vol. 7, No. 10, 31.10.2014, p. 1497-1506.

Research output: Contribution to journalArticle

Sun, Songmei ; Wang, Wenzhong ; Jiang, Dong ; Zhang, Ling ; Li, Xiaoman ; Zheng, Yali ; An, Qi. / Bi2WO6 quantum dot-intercalated ultrathin montmorillonite nanostructure and its enhanced photocatalytic performance. In: Nano Research. 2014 ; Vol. 7, No. 10. pp. 1497-1506.
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