Noble-Metal-Free Photocatalytic Hydrogen Evolution Activity: The Impact of Ball Milling Anatase Nanopowders with TiH 2 .

Authors :: Zhou X
Liu N
Schmidt J
Kahnt A
Osvet A
Romeis S
Zolnhofer EM
Marthala VR
Guldi DM
Peukert W
Hartmann M
Meyer K
Schmuki P
Source :: Advanced materials (Deerfield Beach, Fla.) [Adv Mater] 2017 Feb; Vol. 29 (5). Date of Electronic Publication: 2016 Nov 25.
Publication Year :: 2017
Abstract: Ball milling TiO <subscript>2</subscript> anatase together with TiH <subscript>2</subscript> can create an effective photocatalyst. The process changes the lattice and electronic structure of anatase. Lattice deformation created by mechanical impact combined with hydride incorporation yield electronic gap-states close to the conduction band of anatase. These provide longer lifetimes of photogenerated charge carriers and lead to an intrinsic cocatalytic activation of anatase for H <subscript>2</subscript> evolution.<br /> (© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)

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