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Synthesis of Nanocrystalline Yttrium Iron Oxides and their Activity for Photocatalytic Hydrogen Evolution

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Nanocrystalline yttrium iron oxides were successfully synthesized via a citrate chelating process using yttrium nitrate and iron nitrate as precursors. YFeO3 or Y3Fe5O12 could be prepared by the controlled thermal transformation with different Y/Fe initial ratios. The prepared samples were characterized by X-ray diffraction, N2 adsorption, Raman spectroscopy, thermal analysis, scanning electron microscopy, UV-Vis absorption spectra and photoluminescence spectra. Under visible light irradiation, YFeO3 synthesized with the Y/Fe ratio of 1/2 had the highest photocatalytic activity for hydrogen evolution. Heat-treatment also showed considerable effects on hydrogen evolution.
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Keywords: HYDROGEN; PHOTOCATALYSIS; VISIBLE LIGHT; YTTRIUM IRON OXIDE

Document Type: Research Article

Publication date: 01 August 2013

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  • Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
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