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Electronic structure and visible light photocatalysis water splitting property of chromium-doped SrTiO3 |
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| Authors: | JW Liu G Chen ZH Li ZG Zhang |
| Institution: | a Department of Applied Chemistry, Harbin Institute of Technology, 92 West Dazhi Street, Harbin 150001, PR China b Department of Physics, Harbin Institute of Technology, Harbin 150001, PR China c State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130023, PR China |
| Abstract: | Cr-doped SrTi1−xCrxO3 (x=0.00, 0.02, 0.05, 0.10) powders, prepared by solvothermal method, were further characterized by ultraviolet-visible (UV-vis) absorption spectroscopy. The UV-vis spectra indicate that the SrTi1−xCrxO3 powders can absorb not only UV light like pure SrTiO3 powder but also the visible-light spectrum (λ>420 nm). The results of density functional theory (DFT) calculation illuminate that the visible-light absorption bands in the SrTi1−xCrxO3 catalyst are attributed to the band transition from the Cr 3d to the Cr 3d+Ti 3d hybrid orbital. The photocatalytic activities of chromium-doped SrTiO3 both under UV and visible light are increased with the increase in the amounts of chromium. |
| Keywords: | Water splitting Solvothermal Photocatalysis |
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