A new series of the visible-light-driven photocatalysts BaIn0.5Nb0.5O3, BaCo1/3Nb2/3O3 and BaNi1/3Nb2/3O3 with ABO3 perovskite structure has been developed by controlling their crystal and electronic structure. In these photocatalysts the B site is randomly occupied by two kinds of cations. They were characterized by X-ray diffraction, scanning electron microscopy, UV-Vis diffuse reflectance spectroscopy, Raman scattering spectroscopy and the photocatalytic activity measurements under UV and visible light irradiation (λ > 420 nm), respectively. Under the octahedral crystal field, the 3d orbitals split into t2g and eg orbitals. The split t2g or eg orbitals in the photocatalysts BaCo1/3Nb2/3O3 and BaNi1/3Nb2/3O3 acts as a new valence band instead of the O 2p orbital, while in BaIn0.5Nb0.5O3 the In 5s orbital acts as a lower conduction band. All the photocatalysts absorb visible light photons obviously, which can be ascribed to their unique electronic structures. Under visible light irradiation (λ > 420 nm), these photocatalysts show obvious photocatalytic activities in evolving H2 from CH3OH/H2O solution with Pt co-catalyst.
Research on Chemical Intermediates – Springer Journals
Published: Jun 1, 2005
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
All the latest content is available, no embargo periods.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud