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Issue 21, 2012
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In situ growth of Au nanoparticles on Fe2O3nanocrystals for catalytic applications

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Abstract

Gold nanoparticles are successfully grown in situ on α-Fe2O3 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.

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

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Supplementary files

Article information


Submitted
14 May 2012
Accepted
08 Aug 2012
First published
09 Aug 2012

CrystEngComm, 2012,14, 7229-7235
Article type
Paper

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

S. Cao, J. Fang, M. M. Shahjamali, Z. Wang, Z. Yin, Y. Yang, F. Y. C. Boey, J. Barber, S. C. J. Loo and C. Xue, CrystEngComm, 2012, 14, 7229
DOI: 10.1039/C2CE25746G

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