{"_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": ["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"], "permalink_uri": "https://repo.qst.go.jp/records/84491", "pubdate": {"attribute_name": "公開日", "attribute_value": "2022-01-06"}, "publish_date": "2022-01-06", "publish_status": "0", "recid": "84491", "relation": {}, "relation_version_is_last": true, "title": ["Oxygen adsorption state of Pt nanoparticles deposited on the ion-irradiated carbon support"], "weko_shared_id": -1}