Photocatalytic water oxidation with a Prussian blue modified brown TiO₂

Abstract

A CoFe Prussian blue analogue is coupled with brown TiO2 nanoparticles to achieve an earth-abundant photocatalytic water oxidation assembly.

Photocatalytic Water Oxidation with a CoFe Prussian Blue Analogue–Layered Niobate Hybrid Material

“…Platinum nanoparticles, 3d metal oxides, and ruthenium tris­(bipyridyl) complexes have previously been intercalated into niobate oxide sheets. ,, On the other hand, CoFe Prussian blue analogues have previously been combined with photosensitizers and/or semiconductors for the light-driven water oxidation process. For the development of Prussian blue based photocatalytic hybrid assemblies, a variety of components have been utilized ranging from ruthenium photosensitizers to porphyrin derivatives, oxide-based semiconductors, and layered double hydroxides. − Herein, we combine a layered niobate and a CoFe Prussian blue structure to develop a semiconductor–catalyst hybrid assembly for the photocatalytic water oxidation process.…”

Sustainable Underwater Solar Conversion Systems with Enhanced Electrode Environmental Compatibility

“…This different phenomenon may be attributed to the difference in day- and night-mode discharge mechanisms. As we all know, when the photoelectrode is stimulated by sunlight, oxygen would be produced in a short time . These oxygen molecules attach to the surface of the photoelectrode to form a gas film, resulting in the electrolyte passing through these thick gas films to expand to the surface of the electrode, thus increasing the diffusion resistance.…”

Flexible Nano-TiO2 Sheets Exhibiting Excellent Photocatalytic and Photovoltaic Properties by Controlled Silane Functionalization─Exploring the New Prospects of Wastewater Treatment and Flexible DSSCs

“… 3 − 5 TiO 2 is widely accepted as an n-type semiconductor with a wide indirect band gap. 6 Photoexcitation of anatase TiO 2 has been reported to generate a large number of strongly bound excitons that display an intermediate character between the Wannier–Mott and Frenkel excitons, that hold a two-dimensional wave-like nature, 7 and are confined in the 001 planes in the 3-dimensional lattice. 8 In addition, the critical carrier density, which governs the dissociation of strongly bound excitons into uncorrelated electron–hole pairs, for exciton Mott transition in photodoped anatase TiO 2 is found to have a remarkably high magnitude.…”

“…Of them, TiO 2 nanoparticles, which could serve both the abovementioned roles, have already revolutionized the fields of photocatalysis and photovoltaics; as evidenced by large numbers of research articles published each year on the use of TiO 2 nanoparticles in both areas. In particular, the optoelectronic properties of both anatase and rutile polymorphs of TiO 2 have been intensely investigated for the prospects of using it in light-energy conversion applications. − TiO 2 is widely accepted as an n-type semiconductor with a wide indirect band gap . Photoexcitation of anatase TiO 2 has been reported to generate a large number of strongly bound excitons that display an intermediate character between the Wannier–Mott and Frenkel excitons, that hold a two-dimensional wave-like nature, and are confined in the 001 planes in the 3-dimensional lattice .…”