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Surface photovoltage property of magnesium ferrite/hematite heterostructured hollow nanospheres prepared with one-pot strategy

Authors Shen, Yu
Zhao, Qidong
Li, Xinyong HKUST affiliated (currently or previously)
Hou, Yang HKUST affiliated (currently or previously)
Chen, Guohua View this author's profile
Issue Date 2012
Source Colloids and surfaces. A, Physicochemical and engineering aspects , v. 403, June 2012, p. 35-40
Summary Magnesium ferrite/hematite heterostructured hollow nanospheres were successfully fabricated via a facile solvothermal method. The products were well characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, high resolution transmission electron microscopy, Fourier transform infrared spectroscopy. UV-vis absorption spectroscopy and surface photovoltage spectroscopy. From the absorption edge in the UV-vis absorption spectrum of MgFe2O4/alpha-Fe2O3 hollow nanospheres, an optical band-gap energy of about 1.986 eV was estimated. Furthermore, it was observed that the heterostructured hollow nanospheres presented a remarkable surface photovoltage response in UV and visible spectral region, which was attributed to the effective formation of chemical interface between the two crystalline phases of MgFe2O4 and alpha-Fe2O3. (C) 2012 Elsevier B.V. All rights reserved.
ISSN 0927-7757
Language English
Format Article
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