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

Shao-Wen Cao; Zhen Yin; James Barber; Freddy Y. C. Boey; Say Chye Joachim Loo; Can Xue

doi:10.1021/am201481b

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

Shao-Wen Cao
, Zhen Yin
, James Barber
, Freddy Y. C. Boey
, Say Chye Joachim Loo^*
, Can Xue^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

290 Citations (Scopus)

Abstract

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. © 2011 American Chemical Society.

Original language	English
Pages (from-to)	418-423
Journal	ACS Applied Materials and Interfaces
Volume	4
Issue number	1
Online published	20 Dec 2011
DOIs	https://doi.org/10.1021/am201481b
Publication status	Published - 25 Jan 2012
Externally published	Yes

Funding

The authors acknowledge financial support from NTU Start-Up Grant (SUG), NTU seed funding for Solar Fuels Laboratory, and CRP (NRF-CRP5-2009-04) from NRF Singapore.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 6 Clean Water and Sanitation
SDG 7 Affordable and Clean Energy

Research Keywords

electron transfer
heterojunction
photocatalyst
surface plasmon resonance
water splitting

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10.1021/am201481b

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Cite this

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title = "Preparation of Au-BiVO4 heterogeneous nanostructures as highly efficient visible-light photocatalysts",

abstract = "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. {\textcopyright} 2011 American Chemical Society.",

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AU - Cao, Shao-Wen

AU - Yin, Zhen

AU - Barber, James

AU - Boey, Freddy Y. C.

AU - Loo, Say Chye Joachim

AU - Xue, Can

PY - 2012/1/25

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N2 - 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. © 2011 American Chemical Society.

AB - 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. © 2011 American Chemical Society.

KW - electron transfer

KW - heterojunction

KW - photocatalyst

KW - surface plasmon resonance

KW - water splitting

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