Preparation of Au-BiVO4 heterogeneous nanostructures as highly efficient visible-light photocatalysts

Preparation of Au-BiVO4 heterogeneous nanostructures as highly efficient visible-light photocatalysts

Au-BiVO4 heterogeneous nanostructures have been successfully prepared through in situ growth of gold nanoparticles on BiVO4 microtubes and nanosheets via a cysteine-linking strategy. The experimental results reveal that these Au-BiVO4 heterogeneous nanostructures exhibit much higher visible-light ph...

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Bibliographic Details
Main Authors: Cao, Shao-Wen, Yin, Zhen, Barber, James, Boey, Freddy Yin Chiang, Loo, Say Chye Joachim, Xue, Can
Other Authors: School of Materials Science & Engineering
Format: Article
Language:English
Published: 2012
Subjects:
DRNTU::Engineering::Materials
Online Access:https://hdl.handle.net/10356/99790
http://hdl.handle.net/10220/7684
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Institution: Nanyang Technological University
Language: English
Description
Summary:Au-BiVO4 heterogeneous nanostructures have been successfully prepared through in situ growth of gold nanoparticles on BiVO4 microtubes and nanosheets via a cysteine-linking strategy. The experimental results reveal that these Au-BiVO4 heterogeneous nanostructures exhibit much higher visible-light photocatalytic activities than the individual BiVO4 microtubes and nanosheets for both dye degradation and water oxidation. The enhanced photocatalytic efficiencies are attributed to the charge transfer from BiVO4 to the attached gold nanoparticles as well as their surface plasmon resonance (SPR) absorption. These new heteronanostructures are expected to show considerable potential applications in solar-driven wastewater treatment and water splitting.

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