A generic method of visible light sensitization for perovskite-related layered oxides: Substitution effect of lead |
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| Authors: | Hyun G Kim Jum S Jang Pramod H Borse |
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| Institution: | a Busan Center, Korea Basic Science Institute (KBSI), Busan 609-735, Korea
b Department of Chemical Engineering and School of Environmental Science & Engineering, Pohang University of Science and Technology San 31 Hyoja-dong, Pohang 790-784 Korea |
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| Abstract: | Nearly complete substitution of lead into layered perovskites is a generic method of visible light sensitization for these ultraviolet (UV)-active materials. Thus, CaBi4Ti4O15 (Aurivillius phase), K0.5La0.5Ca1.5Nb3O10 (Dion-Jacobson phase), and Sr3Ti2O7 (Ruddlesden-Popper phase) are photocatalysts, all working under UV light, but their analogs containing lead (PbBi4Ti4O15, K0.5La0.25Bi0.25Ca0.75Pb0.75Nb3O10, and PbTiO3) absorb visible light and exhibit photocatalytic activity of decomposition of water under visible light. |
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| Keywords: | Layered perovskite Photocatalysts Water splitting |
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