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- W3190253403 abstract "This work focuses on the formation of Ir³⁺ dopants in the host TiO₂ matrix to decrease the band gap energy and a built-in electric field at the interface between Ir⁰ and TiO₂. X-ray diffraction results show that the anatase percentage is increased from 70 to 90% with increasing Ir doping concentration using the hydrothermal procedures at 200 °C for 24 h. X-ray photoelectron spectroscopy results demonstrate that the binding energies of Ti⁴⁺ (Ti 2p₁/₂ and Ti 2p₃/₂) shift slightly positively after Ir doping. The influence of Ir doping on the photoelectrochemical and optical properties of anatase/rutile TiO₂ is characterized by linear sweep voltammetry and photoluminescence spectroscopy. These results suggest that the photoinduced electron–hole pair recombination rate is decreased in the presence of the Ir dopant. Outstanding H₂ evolution reaction efficiencies of 48 and 23.5 μmol·h–¹·g–¹ with apparent quantum efficiency values of approximately 15.7 and 4.5% determined at 365 and 420 nm, respectively, are achieved with the 1.0% Ir/TiO₂ specimen in photocatalytic systems to enhance hydrogen evolution." @default.
- W3190253403 created "2021-08-16" @default.
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- W3190253403 date "2020-01-01" @default.
- W3190253403 modified "2023-09-23" @default.
- W3190253403 title "In Situ Spatial Charge Separation of an Ir@TiO₂ Multiphase Photosystem toward Highly Efficient Photocatalytic Performance of Hydrogen Production" @default.
- W3190253403 hasPublicationYear "2020" @default.
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