NaNbO 3 rods modified by In 2 O 3 nanoparticles (In 2 O 3 /NaNbO 3 ) were successfully synthesized by an improved coprecipitation method, and they were found to be advantageous for photocatalytic H 2 evolution under visible light irradiation and pure water splitting under ultraviolet light irradiation. The composites were characterized by X-ray diffraction, UV−vis diffuse reflectance spectrometry, Brunauer−Emmett−Teller measurement, scanning electron microscopy, energy-dispersive spectrometry, and transmission electron microscopy. With use of the electrochemical and valence band X-ray photoelectron spectroscopy analysis, the improvement of the photocatalytic activity was attributed to the promoted transportation of photoexcited holes in the composite.
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Lv et al. (2010) studied this question.
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