Fabrication and surface photovoltage study of hematite microparticles with hollow spindle-shaped structure

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)7099-7104
Journal / PublicationApplied Surface Science
Volume258
Issue number18
Publication statusPublished - 1 Jul 2012
Externally publishedYes

Abstract

Hematite (α-Fe 2 O 3 ) particles with hollow spindle-shaped microstructure were successfully synthesized by a one-pot hydrothermal approach in large scale. The structural properties of the sample were systematically investigated by X-ray powder diffraction, scanning electron microscopy, energy-dispersive X-ray spectrum, high resolution transmission electron microscopy, selected-area electron diffraction techniques, UV-vis diffuse reflectance spectroscopy and infrared spectroscopy techniques. The characterization results revealed that the α-Fe 2 O 3 microparticles with a single-domain crystalline structure was mainly grown along the (1 0 4) crystal plane. The valence states and the surface chemical compositions of α-Fe 2 O 3 were further identified by X-ray photoelectron spectroscopy. The feature of photo-induced charge separation on spectrum was demonstrated by the surface photovoltage measurement under different external biases. The observed photoelectric characteristics of the as-fabricated material are beneficial for various optical and electronic applications. © 2012 Elsevier B.V.

Research Area(s)

  • Hollow structure, Optical properties, Surface photovoltage

Bibliographic Note

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Citation Format(s)

Fabrication and surface photovoltage study of hematite microparticles with hollow spindle-shaped structure. / Li, Hong; Zhao, Qidong; Li, Xinyong et al.
In: Applied Surface Science, Vol. 258, No. 18, 01.07.2012, p. 7099-7104.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review