Issue 32, 2017

Hollow hematite single crystals deposited with ultra-thin Al2O3 by atom layer deposition for improved photoelectrochemical performance

Abstract

Hematite (α-Fe2O3) is a red material with a band gap of about 2.0 eV, which indicates that it can absorb more solar light. It is a promising photocatalyst applied in many fields. In this paper, α-Fe2O3 single crystal hollow hexagonal bipyramids were synthesized by a simple one-pot hydrothermal method. The morphology and structure of the prepared α-Fe2O3 hollow hexagonal bipyramids were studied using scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD). The hollow single crystals show a good light absorption and performance in photodegradation of methylene blue (MB). Due to the strategy of depositing ultra-thin layers of Al2O3 by atomic layer deposition (ALD), the photoelectrochemical (PEC) performance of α-Fe2O3 under the simulated solar light irradiation is also improved.

Graphical abstract: Hollow hematite single crystals deposited with ultra-thin Al2O3 by atom layer deposition for improved photoelectrochemical performance

Article information

Article type
Paper
Submitted
10 Nah 2017
Accepted
05 Agd 2017
First published
05 Agd 2017

Dalton Trans., 2017,46, 10635-10640

Hollow hematite single crystals deposited with ultra-thin Al2O3 by atom layer deposition for improved photoelectrochemical performance

W. Jiao, J. Wu, S. Cui, N. Wei, Z. U. Rahman, M. Yu, S. Chen, Y. Zhou and D. Wang, Dalton Trans., 2017, 46, 10635 DOI: 10.1039/C7DT00504K

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