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- W2917302395 abstract "Abstract Perovskites based oxides materials with a suitable energy level have been considered as efficient photocatalysts for solar hydrogen generation. Gold nanoparticles (Au NPs)-sensitized BiFeO3 (BFO) perovskite heterostructures was synthesized, characterized and tested for hydrogen generation under visible light (λ > 420 nm) irradiation. Au/BFO heterostructures was synthesized using a facile hydrothermal method followed by radiolysis without using any surfactant or strong reducing agent. The shape-dependent photocatalysis revealed that the BFO octahedron (BFO-Oct) exhibited higher hydrogen generation (1.4 mmol h–1 g–1) than the BFO nanosheets (BFO-Ns) (1.1 mmol h–1 g–1) and BFO cylindrical shaped (BFO-Cyl) (0.5 mmol h–1 g–1). After radiolytic construction of the Au/BFO heterostructure, more efficient hydrogen generation was obtained due to the photoinduced electron transfer. The photoresponse of the Au/BFO heterostructures was also assessed in terms of the photocurrent via photoelectrochemical (PEC) measurement which showed Au/BFO-Ns generated higher photocurrents than BFO-Ns by a factor of ∼3.8. The Nyquist plot demonstrated facile charge transfer of BFO-Ns after formation of heterojunction with Au NPs. The Mott–Schottky plot revealed that catalysts are n-type and photo generated charge carrier concentration has been increased for Au/BFO heterostructures (0.92 × 1017 cm−3) compared to pure BFO (0.47 × 1017 cm−3). On the basis of experimental results, the enhanced photocatalytic activities of Au/BFO heterostructures could be ascribed to the significant visible light absorption and the efficient charge carrier separation. This study offers a new route to design noble metal modified perovskites based heterostructure as photocatalysts for water splitting." @default.
- W2917302395 created "2019-03-02" @default.
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- W2917302395 date "2019-06-01" @default.
- W2917302395 modified "2023-10-17" @default.
- W2917302395 title "Photocatalytic hydrogen generation using gold decorated BiFeO3 heterostructures as an efficient catalyst under visible light irradiation" @default.
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- W2917302395 doi "https://doi.org/10.1016/j.solmat.2019.01.042" @default.
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