# Effects of Metal-Cation Doping on Photocatalytic H2 Evolution Activity of Layered Perovskite Oxynitride K2LaTa2O6N https://mdr.nims.go.jp/datasets/ca6a110c-5d6a-4cb1-846f-01ec45667d63 ## File - [effects-of-metal-cation-doping-on-photocatalytic-h2-evolution-activity-of-layered-perovskite-oxynitride.pdf](https://mdr.nims.go.jp/filesets/365094b6-24c5-478b-bb6a-036073176d95/download) ([Detail](https://mdr.nims.go.jp/filesets/365094b6-24c5-478b-bb6a-036073176d95.md)) ## Id ca6a110c-5d6a-4cb1-846f-01ec45667d63 ## Local identifier ## Visibility open_to_public ## State published ## Created at 2025-05-09T04:30:35.108598Z ## Updated at 2025-05-09T07:30:33.198128Z ## Published at 2025-05-09T07:21:39.879972Z ## Doi ## First published url https://doi.org/10.1021/acsaem.4c03131 ## Date published 2025-03-24 ## Recorded date published 2025-3-24 ## Resource type journal_article ## Manuscript type vor ## Collection ## Title - title: Effects of Metal-Cation Doping on Photocatalytic H2 Evolution Activity of Layered Perovskite Oxynitride K2LaTa2O6N title_type: original lang: en ## Description - description: Aliovalent cation doping into a heterogeneous photocatalyst affects several of its physicochemical properties, including its morphological characteristics, optical absorption behavior, and charge carrier dynamics, causing a drastic change in its photocatalytic activity. In the present work, we investigated the effects of aliovalent cation doping on the visible-light H2-evolution photocatalytic activity of the Ruddlesden–Popper layered perovskite oxynitride K2LaTa2O6N. The photocatalytic activity toward H2 evolution from an aqueous NaI solution was found to be enhanced by an increase in the specific surface area of the K2LaTa2O6N photocatalyst, which could be realized upon doping with lower-valence cations (e.g., Mg2+, Al3+, and Ga3+). Among the dopants examined at 1 mol % doping, Ga resulted in the highest activity. The activity of the Ga-doped specimen was further improved with increasing Ga concentration, where the maximal activity was obtained at 10 mol %, corresponding to an apparent quantum yield of 2.7 ± 0.4% at 420 nm from aqueous methanol. This number is the highest reported for a layered oxynitride photocatalyst. In the Ga-doped K2LaTa2O6N, a trade-off was observed between the Ga concentration and the photocatalytic activity. Although doping with Ga reduced the particle size of K2LaTa2O6N and suppressed undesirable charge recombination, it led to an enlarged bandgap, unsuitable for visible-light absorption. description_type: abstract lang: und ## Creator - name: Hideya Tsuchikado role: author - name: Shuji Anabuki role: author - name: Ovidiu Cretu role: author orcid: https://orcid.org/0000-0002-1822-8172 - name: Yuki Kinoshita role: author orcid: https://orcid.org/0009-0002-5190-7238 - name: Masashi Hattori role: author orcid: https://orcid.org/0000-0002-0644-5137 - name: Yuta Shiroma role: author - name: Dongxiao Fan role: author - name: Megumi Okazaki role: author orcid: https://orcid.org/0000-0003-1167-9453 - name: Takuto Soma role: author orcid: https://orcid.org/0000-0001-8685-9606 - name: Fumitaka Ishiwari role: author orcid: https://orcid.org/0000-0002-0200-4510 - name: Shunsuke Nozawa role: author orcid: https://orcid.org/0000-0003-4977-6849 - name: Toshiyuki Yokoi role: author orcid: https://orcid.org/0000-0002-3315-3172 - name: Michikazu Hara role: author orcid: https://orcid.org/0000-0003-3450-5704 - name: Koji Kimoto role: author orcid: https://orcid.org/0000-0002-3927-0492 - name: Akira Yamakata role: author orcid: https://orcid.org/0000-0003-3179-7588 - name: Akinori Saeki role: author orcid: https://orcid.org/0000-0001-7429-2200 - name: Kazuhiko Maeda role: author orcid: https://orcid.org/0000-0001-7245-8318 ## Contact agent ## Publisher organization: American Chemical Society (ACS) ## Managing organization ## Keyword - subject: artificial photosynthesis schema: not_defined - subject: heterogeneous photocatalysis schema: not_defined - subject: mixed-anion compounds schema: not_defined - subject: topochemical reaction schema: not_defined - subject: visible light schema: not_defined ## Rights - identifier: https://creativecommons.org/licenses/by/4.0/ ## Other identifier(s) ## Data origin ## Embargo ## Journal - title: ACS Applied Energy Materials issn: '25740962' volume: '8' issue: '6' start_page: 3541 end_page: 3552 ## Conference ## Related item ## Funding - identifier: JPMJCR20R2 funder_name: Core Research for Evolutional Science and Technology - identifier: JP20H05836 funder_name: Japan Society for the Promotion of Science - identifier: JP20H05838 funder_name: Japan Society for the Promotion of Science - identifier: JP22H05142 funder_name: Japan Society for the Promotion of Science - identifier: JP22H05148 funder_name: Japan Society for the Promotion of Science - identifier: JP23H04626 funder_name: Japan Society for the Promotion of Science - identifier: JPJSCCA20200004 funder_name: Japan Society for the Promotion of Science - identifier: JPMJSP2106 funder_name: Support for Pioneering Research Initiated by the Next Generation ## Instrument ## Instrument operator ## Instrument managing organization ## Measurement method ## Specimen ## Chemical composition ## Structure for specimen ## Structural feature for specimen ## Specific property for specimen ## Process for specimen treatment ## Computational method ## Energy level/transition state ## Software ## Custom property ## Fileset - id: 365094b6-24c5-478b-bb6a-036073176d95 filename: effects-of-metal-cation-doping-on-photocatalytic-h2-evolution-activity-of-layered-perovskite-oxynitride.pdf content_type: application/pdf size: 5311126 md5: '085bf341e9d5a1defa377c2225912e55' ## Thumbnail fileset_id: 365094b6-24c5-478b-bb6a-036073176d95 filename: effects-of-metal-cation-doping-on-photocatalytic-h2-evolution-activity-of-layered-perovskite-oxynitride.pdf