Browsing by Author "Sadigh Akbari, Sina"

Filter results by typing the first few letters
Now showing 1 - 3 of 3
  • Thumbnail Image
    ItemOpen Access
    Photocatalytic water oxidation with a CoFe prussian blue analogue–layered niobate hybrid material
    (American Chemical Society, 2021-11-22) Sadigh Akbari, Sina; Ünal, U.; Karadaş, Ferdi
    A semiconductor–catalyst hybrid assembly for photocatalytic water oxidation was obtained by preparing CoFe Prussian blue particles on Dion–Jacobson type niobate nanosheets, which produces a p–n junction, as evidenced by the Mott–Schottky plot. The hybrid material with a precious-metal-free cocatalyst exhibits an enhanced photocatalytic activity (89.5 μmol g–1 h–1) in the presence of S2O82– as the electron scavenger. XPS, infrared, XRD, TEM, and SEM studies performed on both pristine and postcatalytic samples indicate that the hybrid assembly exhibits a proper band energy alignment for the photocatalytic water oxidation process and it is stable throughout a 12 h photocatalytic study.
  • Thumbnail Image
    ItemOpen Access
    Photocatalytic water oxidation with a Prussian blue modified brown TiO2
    (Royal Society of Chemistry, 2020-12-04) Gündoğdu, Gülsüm; Ulusoy Ghobadi, Türkan Gamze; Sadigh Akbari, Sina; Özbay, Ekmel; Karadaş, Ferdi
    A recently emerging visible light-absorbing semiconductor, brown TiO2 (b-TiO2), was coupled with a CoFe Prussian blue (PB) analogue to prepare an entirely earth-abundant semiconductor/water oxidation catalyst hybrid assembly. PB/b-TiO2 exhibits a sevenfold higher photocatalytic water oxidation activity compared to b-TiO2. An elegant band alignment unified with the optical absorption of b-TiO2 and excellent electronic dynamics of PB yield a high-performance photocatalytic system.
  • Thumbnail Image
    ItemOpen Access
    Tunable photocatalytic activity of CoFe Prussian blue analogue modified SrTiO3 core–shell structures for solar-driven water oxidation
    (American Chemical Society, 2023-12-18) Peighambardoust, N. S.; Sadigh Akbari, Sina; Lomlu, Rana; Aydemir, U.; Karadaş, Ferdi
    This study presents a pioneering semiconductor-catalyst core–shell architecture designed to enhance photocatalytic water oxidation activity significantly. This innovative assembly involves the in situ deposition of CoFe Prussian blue analogue (PBA) particles onto SrTiO3 (STO) and blue SrTiO3 (bSTO) nanocubes, effectively establishing a robust p–n junction, as demonstrated by Mott–Schottky analysis. Of notable significance, the STO/PB core–shell catalyst displayed remarkable photocatalytic performance, achieving an oxygen evolution rate of 129.6 μmol g–1 h–1, with stability over an extended 9-h in the presence of S2O82– as an electron scavenger. Thorough characterization unequivocally verified the precise alignment of the band energies within the STO/PB core–shell assembly. Our research underscores the critical role of tailored semiconductor-catalyst interfaces in advancing the realm of photocatalysis and its broader applications in renewable energy technologies.