Noble-Metal-Free Photocatalytic Hydrogen Evolution Activity: The Impact of Ball Milling Anatase Nanopowders with TiH<sub>2</sub>.
basic_science · Level V
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- Record sourced from PubMed, PMID 27886413.
- Also identified by DOI 10.1002/adma.201604747.
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Abstract
Ball milling TiO<sub>2</sub> anatase together with TiH<sub>2</sub> 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<sub>2</sub> evolution.