CrO_x-Mediated Performance Enhancement of Ni/NiO-Mg:SrTiO₃ in Photocatalytic Water Splitting.

ABSTRACT: By photodeposition of CrO_x on SrTiO₃-based semiconductors doped with aliovalent Mg(II) and functionalized with Ni/NiO_x catalytic nanoparticles (economically significantly more viable than commonly used Rh catalysts), an increase in apparent quantum yield (AQYs) from ∼10 to 26% in overall water splitting was obtained. More importantly, deposition of CrO_x also significantly enhances the stability of Ni/NiO nanoparticles in the production of hydrogen, allowing sustained operation, even in intermittent cycles of illumination. In situ elemental analysis of the water constituents during or after photocatalysis by inductively coupled plasma mass spectrometry/optical emission spectrometry shows that after CrO_x deposition, dissolution of

SUBMITTER: Han K 

PROVIDER: S-EPMC8422963 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature