Surface Engineering of Conjugated Polybenzothiadiazoles and Integration with Cobalt Oxides for Photocatalytic Water Oxidation |
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| Authors: | Xinghuo Xiao Wenyan Wang Jiali Wang Prof Can Yang Prof Guigang Zhang Prof Xianjun Lang |
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| Institution: | 1. Sauvage Center for Molecular Sciences and, Hubei Key Lab on Organic and Polymeric Optoelectronic Materials, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072 P. R. China;2. State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, 350108 Fuzhou, P. R. China |
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| Abstract: | Conjugated polymers feature promising structure and properties for photocatalytic water splitting. Herein, a hydrolysis strategy was demonstrated to rationally modulate the surface hydrophilicity and band structures of conjugated poly-benzothiadiazoles. High hydrophilicity not only enhances the dispersions of polymeric solids in an aqueous solution but also reduces the absorption energy of water molecules. Besides, both theoretical and experimental results reveal that a more positive valence band potential is generated, which contributes to enhancing the photocatalytic water oxidation performance. Accordingly, the surface-modified conjugated polymers show largely promoted photocatalytic water oxidation activities by deposition of cobalt oxides as cocatalysts. |
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| Keywords: | cobalt cocatalysts conjugated poly-benzothiadiazole photocatalysis surface hydrophilicity water oxidation |
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