{"created":"2021-03-01T06:15:18.357119+00:00","id":12395,"links":{},"metadata":{"_buckets":{"deposit":"19a20b5a-4606-4c25-ada6-d7f94728fd9f"},"_deposit":{"id":"12395","owners":[],"pid":{"revision_id":0,"type":"depid","value":"12395"},"status":"published"},"_oai":{"id":"oai:soar-ir.repo.nii.ac.jp:00012395","sets":["1221:1222"]},"author_link":["37739","37740","37741","37742","37743"],"item_1628147817048":{"attribute_name":"出版タイプ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_ab4af688f83e57aa","subitem_version_type":"AM"}]},"item_6_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2009-09-05","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"1-3","bibliographicPageEnd":"26","bibliographicPageStart":"18","bibliographicVolumeNumber":"347","bibliographic_titles":[{"bibliographic_title":"COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS"}]}]},"item_6_description_20":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"We report here the surfactant- and reducer-free synthesis of gold nanoparticles from an aqueous hydrogen tetrachloroaurate (III) tetrahydrate (HAuCl(4)center dot 4H(2)O) solution using a high-frequency (950 kHz) ultrasound (in the absence of any stabilizing, capping and reducing agents). In particular, size, shape and stability of gold nanoparticles prepared by the 950 kHz ultrasound irradiation (sonication) for 8 min in the surfactant-free aqueous solutions were examined in terms of AuCl(4)(-) concentration (in the range of 0.01-0.1 mM), additional salts (NaCl, HCl and NaOH) and temperature (in the range of 4-60 degrees C). We found that higher AuCl(4)(-) concentration promoted particle growth (size increase) and plate formation. In addition, the plate formation was enhanced with the addition of NaCl or HCl (but not NaOH). This is most likely due to the AuCl(4)(-) reduction on a certain crystal facets (e.g. (1 1 0) facets) caused by the adsorption of Cl(-) ions on specific crystal facets (e.g. (1 1 1) facets). Furthermore, we revealed that the temperature elevated above 50 degrees C led to the formation of spherical gold nanoparticles with the diameter of 20-60 nm from a 0.1 mM AuCl(4)(-) aqueous solution while triangular plates formed coexisting with spherical nanoparticles below 50 degrees C.","subitem_description_type":"Abstract"}]},"item_6_description_30":{"attribute_name":"資源タイプ（コンテンツの種類）","attribute_value_mlt":[{"subitem_description":"Article","subitem_description_type":"Other"}]},"item_6_description_5":{"attribute_name":"引用","attribute_value_mlt":[{"subitem_description":"COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS. 347(1-3):18-26 (2009)","subitem_description_type":"Other"}]},"item_6_link_3":{"attribute_name":"信州大学研究者総覧へのリンク","attribute_value_mlt":[{"subitem_link_text":"Sakai, Toshio","subitem_link_url":"http://soar-rd.shinshu-u.ac.jp/profile/ja.OhkpjFkV.html"}]},"item_6_link_67":{"attribute_name":"WoS","attribute_value_mlt":[{"subitem_link_url":"http://gateway.isiknowledge.com/gateway/Gateway.cgi?&GWVersion=2&SrcAuth=ShinshuUniv&SrcApp=ShinshuUniv&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000270164800004"}]},"item_6_publisher_4":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"ELSEVIER SCIENCE BV"}]},"item_6_relation_48":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_text":"10.1016/j.colsurfa.2008.10.037"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://doi.org/10.1016/j.colsurfa.2008.10.037","subitem_relation_type_select":"DOI"}}]},"item_6_source_id_35":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0927-7757","subitem_source_identifier_type":"ISSN"}]},"item_6_source_id_40":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA10892561","subitem_source_identifier_type":"NCID"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Sakai,  Toshio"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Enomoto,  Hiroto"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Torigoe,  Kanjiro"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Sakai,  Hideki"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Abe,  Masahiko"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2015-09-28"}],"displaytype":"detail","filename":"Surfactant_reducer-free_synthesis_gold_nanoparticles.pdf","filesize":[{"value":"1.3 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"Surfactant_reducer-free_synthesis_gold_nanoparticles.pdf","url":"https://soar-ir.repo.nii.ac.jp/record/12395/files/Surfactant_reducer-free_synthesis_gold_nanoparticles.pdf"},"version_id":"2119b377-5708-412f-8f88-cf143dbc5cb3"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Gold nanoparticle","subitem_subject_scheme":"Other"},{"subitem_subject":"Surfactant- and reducer-free synthesis","subitem_subject_scheme":"Other"},{"subitem_subject":"High-frequency ultrasound","subitem_subject_scheme":"Other"},{"subitem_subject":"Sonochemical reduction","subitem_subject_scheme":"Other"},{"subitem_subject":"Size- and shape-control","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":"Surfactant- and reducer-free synthesis of gold nanoparticles in aqueous solutions","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Surfactant- and reducer-free synthesis of gold nanoparticles in aqueous solutions","subitem_title_language":"en"}]},"item_type_id":"6","owner":"1","path":["1222"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2012-11-20"},"publish_date":"2012-11-20","publish_status":"0","recid":"12395","relation_version_is_last":true,"title":["Surfactant- and reducer-free synthesis of gold nanoparticles in aqueous solutions"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2022-12-14T04:01:38.846750+00:00"}