In situ growth of Au nanoparticles on Fe2O3 nanocrystals for catalytic applications

Shao Wen Cao; Jun Fang; Mohammad Mehdi Shahjamali; Zheng Wang; Zhen Yin; Yanhui Yang; Freddy Y.C. Boey; James Barber; Say Chye Joachim Loo; Can Xue

doi:10.1039/c2ce25746g

In situ growth of Au nanoparticles on Fe₂O₃ nanocrystals for catalytic applications

Shao Wen Cao, Jun Fang, Mohammad Mehdi Shahjamali, Zheng Wang, Zhen Yin, Yanhui Yang, Freddy Y.C. Boey, James Barber, Say Chye Joachim Loo, Can Xue

Research output: Contribution to journal › Article › peer-review

51 Scopus citations

Abstract

Gold nanoparticles are successfully grown in situ on α-Fe ₂O₃ nanocrystals through a cysteine-linked seed-planting approach followed by photo-assisted growth. The size of the gold particles on α-Fe₂O₃ nanocrystals can be further tuned from 2 to 20 nm by using photoinduced seed-mediation strategy. The formed Au-α-Fe₂O₃ hetero-nanoparticles are highly dispersible in aqueous and alcohol solvents, and capable of efficient catalysis for 4-nitrophenol reduction. In addition, they also show promoted photocatalytic efficiencies for visible-light-driven dye degradation and water oxidation due to the enhancement by surface plasmon resonance of the attached gold nanoparticles. The present strategy gives a promising way to prepare hetero-nanostructures composed by metal oxide nanocrystals and metal nanoparticles with tailorable sizes for broad applications in catalysis and photocatalysis.

Original language	English
Pages (from-to)	7229-7235
Number of pages	7
Journal	CrystEngComm
Volume	14
Issue number	21
DOIs	https://doi.org/10.1039/c2ce25746g
State	Published - 7 Nov 2012
Externally published	Yes

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title = "In situ growth of Au nanoparticles on Fe2O3 nanocrystals for catalytic applications",

abstract = "Gold nanoparticles are successfully grown in situ on α-Fe 2O3 nanocrystals through a cysteine-linked seed-planting approach followed by photo-assisted growth. The size of the gold particles on α-Fe2O3 nanocrystals can be further tuned from 2 to 20 nm by using photoinduced seed-mediation strategy. The formed Au-α-Fe2O3 hetero-nanoparticles are highly dispersible in aqueous and alcohol solvents, and capable of efficient catalysis for 4-nitrophenol reduction. In addition, they also show promoted photocatalytic efficiencies for visible-light-driven dye degradation and water oxidation due to the enhancement by surface plasmon resonance of the attached gold nanoparticles. The present strategy gives a promising way to prepare hetero-nanostructures composed by metal oxide nanocrystals and metal nanoparticles with tailorable sizes for broad applications in catalysis and photocatalysis.",

author = "Cao, {Shao Wen} and Jun Fang and Shahjamali, {Mohammad Mehdi} and Zheng Wang and Zhen Yin and Yanhui Yang and Boey, {Freddy Y.C.} and James Barber and Loo, {Say Chye Joachim} and Can Xue",

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doi = "10.1039/c2ce25746g",

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T1 - In situ growth of Au nanoparticles on Fe2O3 nanocrystals for catalytic applications

AU - Cao, Shao Wen

AU - Fang, Jun

AU - Shahjamali, Mohammad Mehdi

AU - Wang, Zheng

AU - Yin, Zhen

AU - Yang, Yanhui

AU - Boey, Freddy Y.C.

AU - Barber, James

AU - Loo, Say Chye Joachim

AU - Xue, Can

PY - 2012/11/7

Y1 - 2012/11/7

N2 - Gold nanoparticles are successfully grown in situ on α-Fe 2O3 nanocrystals through a cysteine-linked seed-planting approach followed by photo-assisted growth. The size of the gold particles on α-Fe2O3 nanocrystals can be further tuned from 2 to 20 nm by using photoinduced seed-mediation strategy. The formed Au-α-Fe2O3 hetero-nanoparticles are highly dispersible in aqueous and alcohol solvents, and capable of efficient catalysis for 4-nitrophenol reduction. In addition, they also show promoted photocatalytic efficiencies for visible-light-driven dye degradation and water oxidation due to the enhancement by surface plasmon resonance of the attached gold nanoparticles. The present strategy gives a promising way to prepare hetero-nanostructures composed by metal oxide nanocrystals and metal nanoparticles with tailorable sizes for broad applications in catalysis and photocatalysis.

AB - Gold nanoparticles are successfully grown in situ on α-Fe 2O3 nanocrystals through a cysteine-linked seed-planting approach followed by photo-assisted growth. The size of the gold particles on α-Fe2O3 nanocrystals can be further tuned from 2 to 20 nm by using photoinduced seed-mediation strategy. The formed Au-α-Fe2O3 hetero-nanoparticles are highly dispersible in aqueous and alcohol solvents, and capable of efficient catalysis for 4-nitrophenol reduction. In addition, they also show promoted photocatalytic efficiencies for visible-light-driven dye degradation and water oxidation due to the enhancement by surface plasmon resonance of the attached gold nanoparticles. The present strategy gives a promising way to prepare hetero-nanostructures composed by metal oxide nanocrystals and metal nanoparticles with tailorable sizes for broad applications in catalysis and photocatalysis.

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ER -

In situ growth of Au nanoparticles on Fe₂O₃ nanocrystals for catalytic applications

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