Facile synthesis of uniform α-Fe2O3 crystals and their facet-dependent catalytic performance in the photo-Fenton reaction

Yubao Zhao; Feng Pan; Hui Li; Tianchao Niu; Guoqin Xu; Wei Chen

doi:10.1039/C3TA10966F

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Facile synthesis of uniform α-Fe₂O₃ crystals and their facet-dependent catalytic performance in the photo-Fenton reaction†

Yubao Zhao,^a Feng Pan,^a Hui Li,^a Tianchao Niu,^a Guoqin Xu^a and Wei Chen*^abcd

Author affiliations

* Corresponding authors

^a Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore

^b Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore
E-mail: phycw@nus.edu.sg
Fax: +65 6516 2921
Tel: +65 6516 2921

^c National University of Singapore (Suzhou) Research Institute, 377 Lin Quan Street, Suzhou Industrial Park, Jiang Su, China

^d NUS Environmental Research Institute, National University of Singapore, 5A Engineering Drive 1, #02-01, Singapore 117411

Abstract

Rhombohedron-shaped α-Fe₂O₃ crystals with exposed {0001} and {10 [1 with combining macron] 0} facets and truncated dodecahedron-like crystals with predominant {102} facets were synthesized via a facile and green hydrothermal method. These nanocrystals have similar sizes and BET surface areas. The crystals in shape of truncated dodecahedrons exhibited superior photocatalytic performance to that of the rhombohedron-shaped crystals. This observation may be attributable to the higher density of surface Fe ions on the {10 [1 with combining macron] 2} facet compared to that of the {0001} and {100} facets.

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Article information

DOI: https://doi.org/10.1039/C3TA10966F
Article type: Paper
Submitted: 07 Mar 2013
Accepted: 08 Apr 2013
First published: 08 Apr 2013

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J. Mater. Chem. A, 2013,1, 7242-7246

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Facile synthesis of uniform α-Fe₂O₃ crystals and their facet-dependent catalytic performance in the photo-Fenton reaction

Y. Zhao, F. Pan, H. Li, T. Niu, G. Xu and W. Chen, J. Mater. Chem. A, 2013, 1, 7242 DOI: 10.1039/C3TA10966F

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Journal of Materials Chemistry A