Semiconducting Synthetic Melanin‐Based Organic/Inorganic Hybrid Photoanodes for Solar Water Oxidation
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- Semiconducting Synthetic Melanin‐Based Organic/Inorganic Hybrid Photoanodes for Solar Water Oxidation
- Lee, Cheolmin; Jeon, Dasom; Bae, Sanghyun; Kim, Hyunwoo; Han, Yujin; Lee, Yang Woo; Ryu, Jungki
- melanin; Water splitting; Photocatalysis; heterojunction; organic/inorganic hybrid materials
- Issue Date
- WILEY-V C H VERLAG GMBH
- CHEMSUSCHEM, v., no., pp. -
- We report the development of semiconducting melanin‐based organic/inorganic hybrid photoanodes for solar water oxidation. Synthetic melanin thin‐film incorporating polyoxometalate (POM) water oxidation catalysts (WOCs) is readily deposited on the surface of various n‐type inorganic semiconductors (e.g., Fe2O3, BiVO4, and TiO2) by electropolymerization. The deposition of melanin and POM hybrid (MP) thin‐film results in the remarkably improved performance of an underlying semiconductor photoanode for solar water oxidation with a significantly increased photocurrent density and decreased onset potential for water oxidation through the formation of melanin‐based p‐n heterojunction structure. We believe that this study can provide insights into the design and fabrication of various melanin‐based optoelectronic devices by utilizing its unique physicochemical properties.
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