{"created":"2023-05-15T15:02:18.619462+00:00","id":84491,"links":{},"metadata":{"_buckets":{"deposit":"596c07ef-18f0-4b0d-ac45-25c6d7704f4c"},"_deposit":{"created_by":1,"id":"84491","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"84491"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00084491","sets":["10:29"]},"author_link":["1032386","1032385","1032384","1032379","1032381","1032382","1032383","1032380","1032388","1032378","1032387"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2021-12-16","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"燃料電池の普及に向けて炭素担持Ptナノ粒子触媒の酸素還元反応（ORR）活性向上が求められているが，我々のグループでは炭素担体を模擬したグラッシーカーボン（GC）基板へのArイオン照射によってORR活性が，未照射試料に比べて2.5倍に向上することを見いだした。イオン照射を用いたGC担体への欠陥導入によるORR活性向上メカニズムを解明するために，本研究ではORR初期過程の酸素吸着に着目し，ORRで電子のやり取りをするPt 5d状態を観測できるPt L3吸収端XAFSの酸素雰囲気でのin situ測定を行った。水素還元直後の純粋Pt状態と酸素暴露状態を観測し，酸素暴露前後のXAFSスペクトルの差分からPtナノ粒子の酸素吸着状態のみを導出し，照射試料と未照射試料を比較した。先行研究からPtへの酸素吸着(Pt-O)に起因するピークを同定し，そのピーク位置を比較すると，照射試料の方が0.7 eV低エネルギーシフトしていることが分かった。これはPt-O反結合性準位の低下を意味するため，反結合準位への電子充填が起こりやすくなることでPt-Oが弱結合化して酸素離脱が容易に変化していることが分かった。","subitem_description_type":"Abstract"}]},"item_10005_description_6":{"attribute_name":"会議概要（会議名, 開催地, 会期, 主催者等）","attribute_value_mlt":[{"subitem_description":"MRM2021","subitem_description_type":"Other"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_14cb"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"岡崎, 宏之"}],"nameIdentifiers":[{"nameIdentifier":"1032378","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Akira, Idesaki"}],"nameIdentifiers":[{"nameIdentifier":"1032379","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Hiroshi, Koshikawa"}],"nameIdentifiers":[{"nameIdentifier":"1032380","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Daiju, Matsumura"}],"nameIdentifiers":[{"nameIdentifier":"1032381","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Shunya, Yamamoto"}],"nameIdentifiers":[{"nameIdentifier":"1032382","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Tetsuya, Yamaki"}],"nameIdentifiers":[{"nameIdentifier":"1032383","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Hiroyuki, Okazaki","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"1032384","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Akira, Idesaki","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"1032385","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Hiroshi, Koshikawa","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"1032386","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Shunya, Yamamoto","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"1032387","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Tetsuya, Yamaki","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"1032388","nameIdentifierScheme":"WEKO"}]}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"conference object","resourceuri":"http://purl.org/coar/resource_type/c_c94f"}]},"item_title":"Oxygen adsorption state of Pt nanoparticles deposited on the ion-irradiated carbon support","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Oxygen adsorption state of Pt nanoparticles deposited on the ion-irradiated carbon support"}]},"item_type_id":"10005","owner":"1","path":["29"],"pubdate":{"attribute_name":"公開日","attribute_value":"2022-01-06"},"publish_date":"2022-01-06","publish_status":"0","recid":"84491","relation_version_is_last":true,"title":["Oxygen adsorption state of Pt nanoparticles deposited on the ion-irradiated carbon support"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T17:37:46.742761+00:00"}