The adsorption sites of CO on Ni(111) as determined by infrared reflection-absorption spectroscopy
The adsorption of CO on Ni(111) has been studied using infrared reflection-absorption spectroscopy combined with LEED, Auger electron spectroscopy, thermal desorption spectroscopy and work function measurements. At low CO coverage (θ = 0.05) CO adsorbs on threefold sites with a strecthing frequency...
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| Veröffentlicht in: | Surface science 1979-04, Vol.83 (1), p.301-312 |
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| creator | Campuzano, Juan Carlos Greenler, Robert G. |
| description | The adsorption of CO on Ni(111) has been studied using infrared reflection-absorption spectroscopy combined with LEED, Auger electron spectroscopy, thermal desorption spectroscopy and work function measurements. At low CO coverage (θ = 0.05) CO adsorbs on threefold sites with a strecthing frequency given by ω
CO = 1817 cm
−1. At θ = 0.30 all molecules have shifted to two-fold sites, and θ = 0.50, where a c(4 × 2) structure is observed,
ω
CO
= 1910
cm
−1. At θ = 0.57, with a (√7/2) × √7/2)R19.1° structure, one quarter of the molecules are adsorbed on top of the nickel atoms with the others in two-fold sites. Molecules bonded on the top sites give rise to a band at 2045 cm
−1. The frequency shift due to dipole-dipole interactions is small compared with the shift resulting from bonding to different crystallographic sites. |
| doi_str_mv | 10.1016/0039-6028(79)90495-3 |
| format | Article |
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CO = 1817 cm
−1. At θ = 0.30 all molecules have shifted to two-fold sites, and θ = 0.50, where a c(4 × 2) structure is observed,
ω
CO
= 1910
cm
−1. At θ = 0.57, with a (√7/2) × √7/2)R19.1° structure, one quarter of the molecules are adsorbed on top of the nickel atoms with the others in two-fold sites. Molecules bonded on the top sites give rise to a band at 2045 cm
−1. The frequency shift due to dipole-dipole interactions is small compared with the shift resulting from bonding to different crystallographic sites.</description><identifier>ISSN: 0039-6028</identifier><identifier>EISSN: 1879-2758</identifier><identifier>DOI: 10.1016/0039-6028(79)90495-3</identifier><language>eng</language><publisher>Elsevier B.V</publisher><ispartof>Surface science, 1979-04, Vol.83 (1), p.301-312</ispartof><rights>1979</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c401t-cb7753a332b9cb30d58ac2ef90d7b4186677d3d5bdf417d3a1bd3701eff65b563</citedby><cites>FETCH-LOGICAL-c401t-cb7753a332b9cb30d58ac2ef90d7b4186677d3d5bdf417d3a1bd3701eff65b563</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/0039602879904953$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3536,27903,27904,65309</link.rule.ids></links><search><creatorcontrib>Campuzano, Juan Carlos</creatorcontrib><creatorcontrib>Greenler, Robert G.</creatorcontrib><title>The adsorption sites of CO on Ni(111) as determined by infrared reflection-absorption spectroscopy</title><title>Surface science</title><description>The adsorption of CO on Ni(111) has been studied using infrared reflection-absorption spectroscopy combined with LEED, Auger electron spectroscopy, thermal desorption spectroscopy and work function measurements. At low CO coverage (θ = 0.05) CO adsorbs on threefold sites with a strecthing frequency given by ω
CO = 1817 cm
−1. At θ = 0.30 all molecules have shifted to two-fold sites, and θ = 0.50, where a c(4 × 2) structure is observed,
ω
CO
= 1910
cm
−1. At θ = 0.57, with a (√7/2) × √7/2)R19.1° structure, one quarter of the molecules are adsorbed on top of the nickel atoms with the others in two-fold sites. Molecules bonded on the top sites give rise to a band at 2045 cm
−1. The frequency shift due to dipole-dipole interactions is small compared with the shift resulting from bonding to different crystallographic sites.</description><issn>0039-6028</issn><issn>1879-2758</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1979</creationdate><recordtype>article</recordtype><recordid>eNp9UMtKAzEUDaJgrf6Bi6ykXYwmk8lkZiNI8QXFbuo65HGDkXYyJlOhf2_Giu68m_vgnMM9B6FLSq4pofUNIawtalI2M9HOW1K1vGBHaEIb0Ral4M0xmvxCTtFZSu8kV4ZNkF6_AVY2hdgPPnQ4-QESDg4vVjivL35GKZ1jlbCFAeLWd2Cx3mPfuahiniO4DZiRWyj9J9PnWwzJhH5_jk6c2iS4-OlT9Ppwv148FcvV4_PiblmYitChMFoIzhRjpW6NZsTyRpkSXEus0BVt6loIyyzX1lU0T4pqywSh4FzNNa_ZFF0ddPsYPnaQBrn1ycBmozoIuyRLVlNeVk0GVgegyR-mbED20W9V3EtK5BioHNOSY1pStPI7UMky7fZAg2zi00OUyXjoDFgfs1tpg_9f4AtJXX1R</recordid><startdate>19790401</startdate><enddate>19790401</enddate><creator>Campuzano, Juan Carlos</creator><creator>Greenler, Robert G.</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>19790401</creationdate><title>The adsorption sites of CO on Ni(111) as determined by infrared reflection-absorption spectroscopy</title><author>Campuzano, Juan Carlos ; Greenler, Robert G.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c401t-cb7753a332b9cb30d58ac2ef90d7b4186677d3d5bdf417d3a1bd3701eff65b563</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1979</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Campuzano, Juan Carlos</creatorcontrib><creatorcontrib>Greenler, Robert G.</creatorcontrib><collection>CrossRef</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Surface science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Campuzano, Juan Carlos</au><au>Greenler, Robert G.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The adsorption sites of CO on Ni(111) as determined by infrared reflection-absorption spectroscopy</atitle><jtitle>Surface science</jtitle><date>1979-04-01</date><risdate>1979</risdate><volume>83</volume><issue>1</issue><spage>301</spage><epage>312</epage><pages>301-312</pages><issn>0039-6028</issn><eissn>1879-2758</eissn><abstract>The adsorption of CO on Ni(111) has been studied using infrared reflection-absorption spectroscopy combined with LEED, Auger electron spectroscopy, thermal desorption spectroscopy and work function measurements. At low CO coverage (θ = 0.05) CO adsorbs on threefold sites with a strecthing frequency given by ω
CO = 1817 cm
−1. At θ = 0.30 all molecules have shifted to two-fold sites, and θ = 0.50, where a c(4 × 2) structure is observed,
ω
CO
= 1910
cm
−1. At θ = 0.57, with a (√7/2) × √7/2)R19.1° structure, one quarter of the molecules are adsorbed on top of the nickel atoms with the others in two-fold sites. Molecules bonded on the top sites give rise to a band at 2045 cm
−1. The frequency shift due to dipole-dipole interactions is small compared with the shift resulting from bonding to different crystallographic sites.</abstract><pub>Elsevier B.V</pub><doi>10.1016/0039-6028(79)90495-3</doi><tpages>12</tpages></addata></record> |
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| language | eng |
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| source | Elsevier ScienceDirect Journals |
| title | The adsorption sites of CO on Ni(111) as determined by infrared reflection-absorption spectroscopy |
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