Visible Light Photocatalytic Hydrogen Evolution from Water Reduction Using Eosin y Containing Trace Vitamin B12 as a Light Harvesting Unit

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Abstract:

A visible light photocatalytic system consisting of Eosin Y containing trace vitamin B12 (VB12) as a light harvesting unit, multiwalled carbon nanotubes (MWCNTs) as an electron transfer channel and CuO as a hydrogen evolution center (abbreviated to Eosin Y/VB12-MWCNTs-CuO) was prepared on the basis of the synergistic effect between Eosin Y and VB12 under visible light irradiation. The Eosin Y/VB12-MWCNTs-CuO system exhibits a higher photocatalytic activity of hydrogen evolution than the Eosin Y-MWCNTs-CuO system. The improvement of the photocatalytic activity is probably due to the effective transfer of photogenerated electrons and stabilization of VB12 to excited Eosin Y.

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Periodical:

Advanced Materials Research (Volumes 724-725)

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753-756

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August 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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