$Charging Effects on Bonding and Catalyzed Oxidation of CO on$Au_{8}$Clusters on MgO$

Charging Effects on Bonding and Catalyzed Oxidation of CO on$Au_{8}$Clusters on MgO

Gold octamers ($Au_{8}$) bound to oxygen-vacancy F-center defects on Mg(001) are the smallest clusters to catalyze the low-temperature oxidation of CO to CO2, whereas clusters deposited on close-to-perfect magnesia surfaces remain chemically inert. Charging of the supported clusters plays a key role...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Science (American Association for the Advancement of Science) 2005-01, Vol.307 (5708), p.403-407
Hauptverfasser:	Yoon, Bokwon, Häkkinen, Hannu, Landman, Uzi, Wörz, Anke S., Antonietti, Jean-Marie, Abbet, Stéphane, Judai, Ken, Heiz, Ueli
Format:	Artikel
Sprache:	eng
Schlagworte:	Adsorption Chemical bonding Color centers Doppler effect Gold Infrared radiation Molecules Oxygen Reactants Vibrational frequencies
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

container_end_page	407
container_issue	5708
container_start_page	403
container_title	Science (American Association for the Advancement of Science)
container_volume	307
creator	Yoon, Bokwon Häkkinen, Hannu Landman, Uzi Wörz, Anke S. Antonietti, Jean-Marie Abbet, Stéphane Judai, Ken Heiz, Ueli
description	Gold octamers ($Au_{8}$) bound to oxygen-vacancy F-center defects on Mg(001) are the smallest clusters to catalyze the low-temperature oxidation of CO to CO2, whereas clusters deposited on close-to-perfect magnesia surfaces remain chemically inert. Charging of the supported clusters plays a key role in promoting their chemical activity. Infrared measurements of the stretch vibration of CO adsorbed on mass-selected gold octamers soft-landed on MgO(001) with coadsorbed O2show a red shift on an F-center-rich surface with respect to the perfect surface. The experiments agree with quantum ab initio calculations that predict that a red shift of the C-O vibration should arise via electron back-donation to the CO antibonding orbital.
format	Article
fullrecord	<record><control><sourceid>jstor</sourceid><recordid>TN_cdi_jstor_primary_3840054</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><jstor_id>3840054</jstor_id><sourcerecordid>3840054</sourcerecordid><originalsourceid>FETCH-jstor_primary_38400543</originalsourceid><addsrcrecordid>eNpjYuA0NLA01bU0MjBmYeA0MDA207UwMDflYOAqLs4yMADKWRpzMgQ7ZyQWpWfmpSu4pqWlJpcUK-TnKTjl56WAhBLzUhScE0sScyqrUlMU_CsyUxJLMoHy-WkKzv5AhSqOpfHVFrUqzjmlxSWpRWC9vun-PAysaYk5xam8UJqbQcbNNcTZQzeruCS_KL6gKDM3sagy3tjCxMDA1MSYgDQACN47Eg</addsrcrecordid><sourcetype>Publisher</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Charging Effects on Bonding and Catalyzed Oxidation of CO on$Au_{8}$Clusters on MgO</title><source>JSTOR Archive Collection A-Z Listing</source><source>American Association for the Advancement of Science</source><creator>Yoon, Bokwon ; Häkkinen, Hannu ; Landman, Uzi ; Wörz, Anke S. ; Antonietti, Jean-Marie ; Abbet, Stéphane ; Judai, Ken ; Heiz, Ueli</creator><creatorcontrib>Yoon, Bokwon ; Häkkinen, Hannu ; Landman, Uzi ; Wörz, Anke S. ; Antonietti, Jean-Marie ; Abbet, Stéphane ; Judai, Ken ; Heiz, Ueli</creatorcontrib><description>Gold octamers ($Au_{8}$) bound to oxygen-vacancy F-center defects on Mg(001) are the smallest clusters to catalyze the low-temperature oxidation of CO to CO2, whereas clusters deposited on close-to-perfect magnesia surfaces remain chemically inert. Charging of the supported clusters plays a key role in promoting their chemical activity. Infrared measurements of the stretch vibration of CO adsorbed on mass-selected gold octamers soft-landed on MgO(001) with coadsorbed O2show a red shift on an F-center-rich surface with respect to the perfect surface. The experiments agree with quantum ab initio calculations that predict that a red shift of the C-O vibration should arise via electron back-donation to the CO antibonding orbital.</description><identifier>ISSN: 0036-8075</identifier><identifier>EISSN: 1095-9203</identifier><language>eng</language><publisher>American Association for the Advancement of Science</publisher><subject>Adsorption ; Chemical bonding ; Color centers ; Doppler effect ; Gold ; Infrared radiation ; Molecules ; Oxygen ; Reactants ; Vibrational frequencies</subject><ispartof>Science (American Association for the Advancement of Science), 2005-01, Vol.307 (5708), p.403-407</ispartof><rights>Copyright 2005 American Association for the Advancement of Science</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/3840054$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/3840054$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,780,784,803,58017,58250</link.rule.ids></links><search><creatorcontrib>Yoon, Bokwon</creatorcontrib><creatorcontrib>Häkkinen, Hannu</creatorcontrib><creatorcontrib>Landman, Uzi</creatorcontrib><creatorcontrib>Wörz, Anke S.</creatorcontrib><creatorcontrib>Antonietti, Jean-Marie</creatorcontrib><creatorcontrib>Abbet, Stéphane</creatorcontrib><creatorcontrib>Judai, Ken</creatorcontrib><creatorcontrib>Heiz, Ueli</creatorcontrib><title>Charging Effects on Bonding and Catalyzed Oxidation of CO on$Au_{8}$Clusters on MgO</title><title>Science (American Association for the Advancement of Science)</title><description>Gold octamers ($Au_{8}$) bound to oxygen-vacancy F-center defects on Mg(001) are the smallest clusters to catalyze the low-temperature oxidation of CO to CO2, whereas clusters deposited on close-to-perfect magnesia surfaces remain chemically inert. Charging of the supported clusters plays a key role in promoting their chemical activity. Infrared measurements of the stretch vibration of CO adsorbed on mass-selected gold octamers soft-landed on MgO(001) with coadsorbed O2show a red shift on an F-center-rich surface with respect to the perfect surface. The experiments agree with quantum ab initio calculations that predict that a red shift of the C-O vibration should arise via electron back-donation to the CO antibonding orbital.</description><subject>Adsorption</subject><subject>Chemical bonding</subject><subject>Color centers</subject><subject>Doppler effect</subject><subject>Gold</subject><subject>Infrared radiation</subject><subject>Molecules</subject><subject>Oxygen</subject><subject>Reactants</subject><subject>Vibrational frequencies</subject><issn>0036-8075</issn><issn>1095-9203</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid/><recordid>eNpjYuA0NLA01bU0MjBmYeA0MDA207UwMDflYOAqLs4yMADKWRpzMgQ7ZyQWpWfmpSu4pqWlJpcUK-TnKTjl56WAhBLzUhScE0sScyqrUlMU_CsyUxJLMoHy-WkKzv5AhSqOpfHVFrUqzjmlxSWpRWC9vun-PAysaYk5xam8UJqbQcbNNcTZQzeruCS_KL6gKDM3sagy3tjCxMDA1MSYgDQACN47Eg</recordid><startdate>20050121</startdate><enddate>20050121</enddate><creator>Yoon, Bokwon</creator><creator>Häkkinen, Hannu</creator><creator>Landman, Uzi</creator><creator>Wörz, Anke S.</creator><creator>Antonietti, Jean-Marie</creator><creator>Abbet, Stéphane</creator><creator>Judai, Ken</creator><creator>Heiz, Ueli</creator><general>American Association for the Advancement of Science</general><scope/></search><sort><creationdate>20050121</creationdate><title>Charging Effects on Bonding and Catalyzed Oxidation of CO on$Au_{8}$Clusters on MgO</title><author>Yoon, Bokwon ; Häkkinen, Hannu ; Landman, Uzi ; Wörz, Anke S. ; Antonietti, Jean-Marie ; Abbet, Stéphane ; Judai, Ken ; Heiz, Ueli</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-jstor_primary_38400543</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Adsorption</topic><topic>Chemical bonding</topic><topic>Color centers</topic><topic>Doppler effect</topic><topic>Gold</topic><topic>Infrared radiation</topic><topic>Molecules</topic><topic>Oxygen</topic><topic>Reactants</topic><topic>Vibrational frequencies</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yoon, Bokwon</creatorcontrib><creatorcontrib>Häkkinen, Hannu</creatorcontrib><creatorcontrib>Landman, Uzi</creatorcontrib><creatorcontrib>Wörz, Anke S.</creatorcontrib><creatorcontrib>Antonietti, Jean-Marie</creatorcontrib><creatorcontrib>Abbet, Stéphane</creatorcontrib><creatorcontrib>Judai, Ken</creatorcontrib><creatorcontrib>Heiz, Ueli</creatorcontrib><jtitle>Science (American Association for the Advancement of Science)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yoon, Bokwon</au><au>Häkkinen, Hannu</au><au>Landman, Uzi</au><au>Wörz, Anke S.</au><au>Antonietti, Jean-Marie</au><au>Abbet, Stéphane</au><au>Judai, Ken</au><au>Heiz, Ueli</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Charging Effects on Bonding and Catalyzed Oxidation of CO on$Au_{8}$Clusters on MgO</atitle><jtitle>Science (American Association for the Advancement of Science)</jtitle><date>2005-01-21</date><risdate>2005</risdate><volume>307</volume><issue>5708</issue><spage>403</spage><epage>407</epage><pages>403-407</pages><issn>0036-8075</issn><eissn>1095-9203</eissn><abstract>Gold octamers ($Au_{8}$) bound to oxygen-vacancy F-center defects on Mg(001) are the smallest clusters to catalyze the low-temperature oxidation of CO to CO2, whereas clusters deposited on close-to-perfect magnesia surfaces remain chemically inert. Charging of the supported clusters plays a key role in promoting their chemical activity. Infrared measurements of the stretch vibration of CO adsorbed on mass-selected gold octamers soft-landed on MgO(001) with coadsorbed O2show a red shift on an F-center-rich surface with respect to the perfect surface. The experiments agree with quantum ab initio calculations that predict that a red shift of the C-O vibration should arise via electron back-donation to the CO antibonding orbital.</abstract><pub>American Association for the Advancement of Science</pub></addata></record>
fulltext	fulltext
identifier	ISSN: 0036-8075
ispartof	Science (American Association for the Advancement of Science), 2005-01, Vol.307 (5708), p.403-407
issn	0036-8075 1095-9203
language	eng
recordid	cdi_jstor_primary_3840054
source	JSTOR Archive Collection A-Z Listing; American Association for the Advancement of Science
subjects	Adsorption Chemical bonding Color centers Doppler effect Gold Infrared radiation Molecules Oxygen Reactants Vibrational frequencies
title	Charging Effects on Bonding and Catalyzed Oxidation of CO on$Au_{8}$Clusters on MgO
url	https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-05T09%3A40%3A59IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-jstor&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Charging%20Effects%20on%20Bonding%20and%20Catalyzed%20Oxidation%20of%20CO%20on$Au_%7B8%7D$Clusters%20on%20MgO&rft.jtitle=Science%20(American%20Association%20for%20the%20Advancement%20of%20Science)&rft.au=Yoon,%20Bokwon&rft.date=2005-01-21&rft.volume=307&rft.issue=5708&rft.spage=403&rft.epage=407&rft.pages=403-407&rft.issn=0036-8075&rft.eissn=1095-9203&rft_id=info:doi/&rft_dat=%3Cjstor%3E3840054%3C/jstor%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rft_jstor_id=3840054&rfr_iscdi=true