Robtist and effective Ru-bipyridyl dye sensitized Ti-MCM-48 cubic mesoporous materials for photocatalytic hydrogen evolution under visible light illumination

摘要

A visible light absorbing solar hydrogen evolution photocatalyst was developed by adsorbing [Ru(bpy) (2)(dcbpy)][PF6](2) (Ru-4,4' dye) to Ti-MCM-48 cubic mesoporous materials. The Ru-4,4' dye was found to bind strongly with Ti-MCM-48 without sacrificing the periodic mesoporous MCM-48 cubic structure. The photocatalytic activities of Ru-4,4' sensitized Ti-MCM-48 materials for solar hydrogen production under visible light illumination was examined. The recycling studies indicate long-term stability of the Ru-4,4'-Ti-MCM-48 photocatalysts. The results indicate that cubic MCM-48 mesoporous materials with spatially isolated titania moieties sensitized by [Ru(bpy)(2)(dcbpy)][PF6](2) are robust photocatalysts for solar hydrogen production. (C) 2015 Elsevier B.V. All rights reserved.