Large-area printing of ferroelectric surface and super-domains for efficient solar water splitting
Surface electronic structures of the photoelectrodes determine the activity and efficiency of the photoelectrochemical water splitting, but the controls of their surface structures and interfacial chemical reactions remain challenging. Here, we use ferroelectric BiFeO3 as a model system to demonstra...
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| creator | Tian, Yu Yaqing Wei Pei, Minghui Cao, Rongrong Gu, Zhenao Wang, Jing Liu, Kunhui Shang, Dashan Niu, Jiebin An, Xiaoqiang Long, Run Zhang, Jinxing |
| description | Surface electronic structures of the photoelectrodes determine the activity and efficiency of the photoelectrochemical water splitting, but the controls of their surface structures and interfacial chemical reactions remain challenging. Here, we use ferroelectric BiFeO3 as a model system to demonstrate an efficient and controllable water splitting reaction by large-area constructing the hydroxyls-bonded surface. The up-shift of band edge positions at this surface enables and enhances the interfacial holes and electrons transfer through the hydroxyl-active-sites, leading to simultaneously enhanced oxygen and hydrogen evolutions. Furthermore, printing of ferroelectric super-domains with microscale checkboard up/down electric fields separates the distribution of reduction/oxidation catalytic sites, enhancing the charge separation and giving rise to an order of magnitude increase of the photocurrent. This large-area printable ferroelectric surface and super-domains offer an alternative platform for controllable and high-efficient photocatalysis. |
| doi_str_mv | 10.48550/arxiv.2008.12575 |
| format | Article |
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Here, we use ferroelectric BiFeO3 as a model system to demonstrate an efficient and controllable water splitting reaction by large-area constructing the hydroxyls-bonded surface. The up-shift of band edge positions at this surface enables and enhances the interfacial holes and electrons transfer through the hydroxyl-active-sites, leading to simultaneously enhanced oxygen and hydrogen evolutions. Furthermore, printing of ferroelectric super-domains with microscale checkboard up/down electric fields separates the distribution of reduction/oxidation catalytic sites, enhancing the charge separation and giving rise to an order of magnitude increase of the photocurrent. 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| subjects | Bismuth compounds Chemical reactions Domains Electric fields Ferroelectric materials Ferroelectricity Oxidation Photoelectric effect Photoelectric emission Physics - Applied Physics Physics - Materials Science Stability Water splitting |
| title | Large-area printing of ferroelectric surface and super-domains for efficient solar water splitting |
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