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Regulating the surface of anion-doped TiO2 nanorods by hydrogen annealing for superior photoelectrochemical water oxidation
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, Jongseong | - |
dc.contributor.author | Lee, Seonyong | - |
dc.contributor.author | Lee, Tae Hyung | - |
dc.contributor.author | Kim, Changyeon | - |
dc.contributor.author | Jun, Sang Eon | - |
dc.contributor.author | Baek, Ji Hyun | - |
dc.contributor.author | Kim, Jae Young | - |
dc.contributor.author | Lee, Mi Gyoung | - |
dc.contributor.author | Ahn, Sang Hyun | - |
dc.contributor.author | Jang, Ho Won | - |
dc.date.accessioned | 2022-08-13T05:07:44Z | - |
dc.date.available | 2022-08-13T14:10:01Z | - |
dc.date.issued | 2022-07-19 | - |
dc.identifier.citation | Nano Convergence, 9(1):33 | ko_KR |
dc.identifier.issn | 2196-5404 | - |
dc.identifier.uri | https://doi.org/10.1186/s40580-022-00323-9 | - |
dc.identifier.uri | https://hdl.handle.net/10371/184257 | - |
dc.description.abstract | Dedications to achieve the highly efficient metal oxide semiconductor for the photoelectrochemical water splitting system have been persisted to utilize the TiO2 as the promising photoanode material. Herein, we report notable progress for nanostructured TiO2 photoanodes using facile sequential one-pot hydrothermal synthesis and annealing in hydrogen. A photocurrent density of 3.04mA·cm−2 at 1.23V vs. reversible hydrogen electrode was achieved in TiO2 nanorod arrays annealed in hydrogen ambient, which is approximately 4.25 times higher than that of pristine TiO2 annealed in ambient air. 79.2% of incident photon-to-current efficiency at 380nm wavelength demonstrates the prominence of the material at the near-UV spectral range region and 100h chronoamperometric test exhibits the stability of the photoanode. Detailed studies regarding crystallinity, bandgap, and elemental analysis provide the importance of the optimized annealing condition for the TiO2-based photoanodes. Water contact angle measurement displays the effect of hydrogen annealing on the hydrophilicity of the material. This study clearly demonstrates the marked improvement using the optimized hydrogen annealing, providing the promising methodologies for eco-friendly mass production of water splitting photoelectrodes. | ko_KR |
dc.description.sponsorship | The authors gratefully acknowledge the fnancial support from the Creative, Material Discovery Program (2016M3D1A1027666, 2017M3D1A1040834, 2018M3D1A1058793) through the National Research Foundation of Korea funded by Ministry of Science and ICT, the Basic Research Laboratory Program through an NRF grant funded by the Korean Ministry of Science, ICT and Future Planning (2021R1A4A302787811), the KRISS (Korea Research Institute of Standards and Science) MPI Lab. Program and the National Research Foundation of Korea (NRF) grant funded by the Korea Government MSIT (2021R1C1C2006142), and Nuclear Energy R&D Program(2020M2D8A206983012). The Inter-University Semiconductor Research Center and Institute of Engineering Research at Seoul National University provided research facilities for this work. | ko_KR |
dc.language.iso | en | ko_KR |
dc.publisher | Springer Open | ko_KR |
dc.subject | Photoelectrochemical | - |
dc.subject | Water splitting | - |
dc.subject | Nanostructures | - |
dc.subject | Titanium dioxide | - |
dc.subject | Hydrogen annealing | - |
dc.title | Regulating the surface of anion-doped TiO2 nanorods by hydrogen annealing for superior photoelectrochemical water oxidation | ko_KR |
dc.type | Article | ko_KR |
dc.identifier.doi | 10.1186/s40580-022-00323-9 | ko_KR |
dc.citation.journaltitle | Nano Convergence | ko_KR |
dc.language.rfc3066 | en | - |
dc.rights.holder | The Author(s) | - |
dc.date.updated | 2022-07-25T07:36:53Z | - |
dc.citation.number | 1 | ko_KR |
dc.citation.startpage | 33 | ko_KR |
dc.citation.volume | 9 | ko_KR |
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