{"created":"2023-05-15T12:00:40.319742+00:00","id":7576,"links":{},"metadata":{"_buckets":{"deposit":"2dd455dd-05d5-4810-a952-e700b6a360a8"},"_deposit":{"created_by":3,"id":"7576","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"7576"},"status":"published"},"_oai":{"id":"oai:kyutech.repo.nii.ac.jp:00007576","sets":["8:9"]},"author_link":["32723","32726","32729","32720","32725","32728","6794","32722","32721","32731","32727"],"item_21_alternative_title_18":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Trapping-Induced Enhancement of Photocatalytic Activity on Brookite TiO<inf>2</inf> Powders: Comparison with Anatase and Rutile TiO<inf>2</inf> Powders"}]},"item_21_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2017-03-06","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"4","bibliographicPageEnd":"2651","bibliographicPageStart":"2644","bibliographicVolumeNumber":"7","bibliographic_titles":[{"bibliographic_title":"ACS Catalysis"}]}]},"item_21_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Brookite TiO2 is a promising material for active photocatalysts. However, the principal mechanism that determines the distinctive photocatalytic activity between anatase, rutile, and brookite TiO2 has not yet been fully elucidated. Therefore, in this work, we studied the behavior of photogenerated electrons and holes in these TiO2 powders by using femtosecond to millisecond time-resolved visible to mid-IR absorption spectroscopy. We found that most of the photogenerated electrons in brookite TiO2 are trapped at powder defects within a few ps. This electron trapping decreases the number of surviving free electrons, but it extends the lifetime of holes as well as the trapped electrons because the probability of electrons to encounter holes is decreased by this electron-trapping. As a result, the number of surviving holes increases, which is beneficial for photocatalytic oxidation. In contrast, the reactivity of electrons is decreased to some extent by trapping, but they still remain active for photocatalytic reductions. Electron trapping also takes place on anatase and rutile TiO2 powders, but the trap-depth in anatase is too shallow to extend the lifetime of holes and that of rutile is too deep than the thermal energy (kT) at room temperature for the electron-consuming reactions. As a result of the moderate depth of the electron trap in brookite, both electrons and holes are reactive for photocatalytic reductions and oxidations. These results have clearly demonstrated that the presence of an appropriate depth of the electron trap can effectively contribute to enhance the overall photocatalytic activity.","subitem_description_type":"Abstract"}]},"item_21_description_60":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"subitem_description":"Journal Article","subitem_description_type":"Other"}]},"item_21_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"32726","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Vequizo,  J."}]},{"nameIdentifiers":[{"nameIdentifier":"32727","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Matsunaga,  H."}]},{"nameIdentifiers":[{"nameIdentifier":"32728","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Ishiku,  T."}]},{"nameIdentifiers":[{"nameIdentifier":"32729","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Kamimura,  S."}]},{"affiliations":[{"affiliationNames":[{"affiliationName":"","lang":"ja"}],"nameIdentifiers":[]}],"familyNames":[{"familyName":"Ohno","familyNameLang":"en"},{"familyName":"横野","familyNameLang":"ja"},{"familyName":"オウノ","familyNameLang":"ja-Kana"}],"givenNames":[{"givenName":"Teruhisa","givenNameLang":"en"},{"givenName":"照尚","givenNameLang":"ja"},{"givenName":"テルヒサ","givenNameLang":"ja-Kana"}],"nameIdentifiers":[{"nameIdentifier":"6794","nameIdentifierScheme":"WEKO"},{"nameIdentifier":"10203887","nameIdentifierScheme":"e-Rad","nameIdentifierURI":"https://nrid.nii.ac.jp/ja/nrid/1000010203887"},{"nameIdentifier":"7402659316","nameIdentifierScheme":"Scopus著者ID","nameIdentifierURI":"https://www.scopus.com/authid/detail.uri?authorId=7402659316"},{"nameIdentifier":"0000-0002-7825-8189","nameIdentifierScheme":"ORCiD","nameIdentifierURI":"https://orcid.org/0000-0002-7825-8189"},{"nameIdentifier":"98","nameIdentifierScheme":"九工大研究者情報","nameIdentifierURI":"https://hyokadb02.jimu.kyutech.ac.jp/html/98_ja.html"}],"names":[{"name":"Ohno, Teruhisa","nameLang":"en"},{"name":"横野, 照尚","nameLang":"ja"},{"name":"オウノ, テルヒサ","nameLang":"ja-Kana"}]},{"nameIdentifiers":[{"nameIdentifier":"32731","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Yamakata,  A."}]}]},"item_21_link_62":{"attribute_name":"研究者情報","attribute_value_mlt":[{"subitem_link_url":"https://hyokadb02.jimu.kyutech.ac.jp/html/98_ja.html"}]},"item_21_publisher_7":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"American Chemical Society"}]},"item_21_relation_12":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isVersionOf","subitem_relation_type_id":{"subitem_relation_type_id_text":"https://doi.org/10.1021/acscatal.7b00131","subitem_relation_type_select":"DOI"}}]},"item_21_rights_13":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"This document is the unedited author's version of a Submitted Work that was subsequently accepted for publication in ACS Catalysis, copyright © American Chemical Society after peer review. To access the final edited and published work, see https://doi.org/10.1021/acscatal.7b00131."}]},"item_21_select_59":{"attribute_name":"査読の有無","attribute_value_mlt":[{"subitem_select_item":"yes"}]},"item_21_source_id_8":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"2155-5435","subitem_source_identifier_type":"ISSN"}]},"item_21_subject_16":{"attribute_name":"日本十進分類法","attribute_value_mlt":[{"subitem_subject":"431","subitem_subject_scheme":"NDC"}]},"item_21_text_28":{"attribute_name":"論文ID（連携）","attribute_value_mlt":[{"subitem_text_value":"10304366"}]},"item_21_text_36":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"Graduate School of Engineering, Toyota Technological Institute, 2-12-1 Hisakata, Tempaku, Nagoya 468-8511, Japan"},{"subitem_text_value":"Graduate School of Engineering, Toyota Technological Institute, 2-12-1 Hisakata, Tempaku, Nagoya 468-8511, Japan"},{"subitem_text_value":"Department of Materials Science, Faculty of Engineering, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata-ku, Kitakyushu, Fukuoka, 804-8550, Japan"},{"subitem_text_value":"Department of Materials Science, Faculty of Engineering, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata-ku, Kitakyushu, Fukuoka, 804-8550, Japan"},{"subitem_text_value":"Department of Materials Science, Faculty of Engineering, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata-ku, Kitakyushu, Fukuoka, 804-8550, Japan"},{"subitem_text_value":"Graduate School of Engineering, Toyota Technological Institute, 2-12-1 Hisakata, Tempaku, Nagoya 468-8511, Japan, Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST), 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan"}]},"item_21_text_63":{"attribute_name":"連携ID","attribute_value_mlt":[{"subitem_text_value":"10243"}]},"item_21_version_type_58":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_ab4af688f83e57aa","subitem_version_type":"AM"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Vequizo,  Junie Jhon M."}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Matsunaga,  Hironori"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Ishiku,  Tatsuya"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kamimura,  Sunao"}],"nameIdentifiers":[{}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[],"affiliationNames":[{"affiliationName":""}]}],"creatorNames":[{"creatorName":"Ohno, Teruhisa","creatorNameLang":"en"},{"creatorName":"横野, 照尚","creatorNameLang":"ja"},{"creatorName":"オウノ, テルヒサ","creatorNameLang":"ja-Kana"}],"familyNames":[{},{},{}],"givenNames":[{},{},{}],"nameIdentifiers":[{},{},{},{},{}]},{"creatorNames":[{"creatorName":"Yamakata,  Akira"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2022-03-23"}],"displaytype":"detail","filename":"acscatal.7b00131.pdf","filesize":[{"value":"519.1 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"acscatal.7b00131.pdf","url":"https://kyutech.repo.nii.ac.jp/record/7576/files/acscatal.7b00131.pdf"},"version_id":"fd3ed3eb-e9ea-48c0-9254-3c2f7ad3dcd8"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"TiO2 photocatalysts","subitem_subject_scheme":"Other"},{"subitem_subject":"photogenerated charge carriers","subitem_subject_scheme":"Other"},{"subitem_subject":"surface-defects","subitem_subject_scheme":"Other"},{"subitem_subject":"charge trapping","subitem_subject_scheme":"Other"},{"subitem_subject":"recombination","subitem_subject_scheme":"Other"},{"subitem_subject":"time-resolved absorption spectroscopy","subitem_subject_scheme":"Other"}]},"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":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Trapping-Induced Enhancement of Photocatalytic Activity on Brookite TiO2 Powders: Comparison with Anatase and Rutile TiO2 Powders","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Trapping-Induced Enhancement of Photocatalytic Activity on Brookite TiO2 Powders: Comparison with Anatase and Rutile TiO2 Powders"}]},"item_type_id":"21","owner":"3","path":["9"],"pubdate":{"attribute_name":"公開日","attribute_value":"2022-03-23"},"publish_date":"2022-03-23","publish_status":"0","recid":"7576","relation_version_is_last":true,"title":["Trapping-Induced Enhancement of Photocatalytic Activity on Brookite TiO2 Powders: Comparison with Anatase and Rutile TiO2 Powders"],"weko_creator_id":"3","weko_shared_id":3},"updated":"2024-04-02T08:41:16.274254+00:00"}