In situ IR study of surface hydroxyl species of dehydrated TiO2: towards understanding pivotal surface processes of TiO2 photocatalytic oxidation of toluene
The surface species on P25-TiO 2 were characterized by FTIR after evacuation at 50-550 °C. The functions of OH groups on P25-TiO 2 catalysts have been tested by the adsorption and photooxidation of toluene in an in situ IR cell. FTIR studies show that the hydroxyl species on P25-TiO 2 are clearly te...
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| Veröffentlicht in: | Physical chemistry chemical physics : PCCP 2012-01, Vol.14 (26), p.9468-9474 |
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| creator | Lin, Huaxiang Long, Jinlin Gu, Quan Zhang, Wenxin Ruan, Rusheng Li, Zhaohui Wang, Xuxu |
| description | The surface species on P25-TiO
2
were characterized by FTIR after evacuation at 50-550 °C. The functions of OH groups on P25-TiO
2
catalysts have been tested by the adsorption and photooxidation of toluene in an
in situ
IR cell. FTIR studies show that the hydroxyl species on P25-TiO
2
are clearly temperature-dependent and P25-TiO
2
has six isolated hydroxyls with bands at 3734, 3715, 3688, 3671, 3658 and 3640 cm
−1
. The OH groups on P25 play different roles in the photo-oxidation process: surface hydroxyls with bands at 3688, 3671, 3658 and 3640 cm
−1
act as adsorption sites while surface hydroxyls with bands at 3734 and 3715 cm
−1
act as sources of the &z.rad;OH radical.
The isolated hydroxyls on the P25-TiO
2
surface are selective to the adsorption of toluene. The 3688, 3671 and 3640 cm
−1
bands were preferentially removed than the 3735 and 3715 cm
−1
bands during the initial adsorption of toluene. |
| doi_str_mv | 10.1039/c2cp40893g |
| format | Article |
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2
were characterized by FTIR after evacuation at 50-550 °C. The functions of OH groups on P25-TiO
2
catalysts have been tested by the adsorption and photooxidation of toluene in an
in situ
IR cell. FTIR studies show that the hydroxyl species on P25-TiO
2
are clearly temperature-dependent and P25-TiO
2
has six isolated hydroxyls with bands at 3734, 3715, 3688, 3671, 3658 and 3640 cm
−1
. The OH groups on P25 play different roles in the photo-oxidation process: surface hydroxyls with bands at 3688, 3671, 3658 and 3640 cm
−1
act as adsorption sites while surface hydroxyls with bands at 3734 and 3715 cm
−1
act as sources of the &z.rad;OH radical.
The isolated hydroxyls on the P25-TiO
2
surface are selective to the adsorption of toluene. The 3688, 3671 and 3640 cm
−1
bands were preferentially removed than the 3735 and 3715 cm
−1
bands during the initial adsorption of toluene.</description><identifier>ISSN: 1463-9076</identifier><identifier>EISSN: 1463-9084</identifier><identifier>DOI: 10.1039/c2cp40893g</identifier><identifier>PMID: 22652962</identifier><language>eng</language><publisher>Cambridge: Royal Society of Chemistry</publisher><subject>Catalysis ; Chemistry ; Exact sciences and technology ; General and physical chemistry ; Photochemistry ; Physical chemistry of induced reactions (with radiations, particles and ultrasonics) ; Surface physical chemistry ; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</subject><ispartof>Physical chemistry chemical physics : PCCP, 2012-01, Vol.14 (26), p.9468-9474</ispartof><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c361t-ed171a8214d0f22e2073c6d61170c0d79af47c2bd0866e532996a149d433c4c83</citedby><cites>FETCH-LOGICAL-c361t-ed171a8214d0f22e2073c6d61170c0d79af47c2bd0866e532996a149d433c4c83</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=26042782$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/22652962$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Lin, Huaxiang</creatorcontrib><creatorcontrib>Long, Jinlin</creatorcontrib><creatorcontrib>Gu, Quan</creatorcontrib><creatorcontrib>Zhang, Wenxin</creatorcontrib><creatorcontrib>Ruan, Rusheng</creatorcontrib><creatorcontrib>Li, Zhaohui</creatorcontrib><creatorcontrib>Wang, Xuxu</creatorcontrib><title>In situ IR study of surface hydroxyl species of dehydrated TiO2: towards understanding pivotal surface processes of TiO2 photocatalytic oxidation of toluene</title><title>Physical chemistry chemical physics : PCCP</title><addtitle>Phys Chem Chem Phys</addtitle><description>The surface species on P25-TiO
2
were characterized by FTIR after evacuation at 50-550 °C. The functions of OH groups on P25-TiO
2
catalysts have been tested by the adsorption and photooxidation of toluene in an
in situ
IR cell. FTIR studies show that the hydroxyl species on P25-TiO
2
are clearly temperature-dependent and P25-TiO
2
has six isolated hydroxyls with bands at 3734, 3715, 3688, 3671, 3658 and 3640 cm
−1
. The OH groups on P25 play different roles in the photo-oxidation process: surface hydroxyls with bands at 3688, 3671, 3658 and 3640 cm
−1
act as adsorption sites while surface hydroxyls with bands at 3734 and 3715 cm
−1
act as sources of the &z.rad;OH radical.
The isolated hydroxyls on the P25-TiO
2
surface are selective to the adsorption of toluene. The 3688, 3671 and 3640 cm
−1
bands were preferentially removed than the 3735 and 3715 cm
−1
bands during the initial adsorption of toluene.</description><subject>Catalysis</subject><subject>Chemistry</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Photochemistry</subject><subject>Physical chemistry of induced reactions (with radiations, particles and ultrasonics)</subject><subject>Surface physical chemistry</subject><subject>Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</subject><issn>1463-9076</issn><issn>1463-9084</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNp90UuLFDEQB_AgivvQi3clHhZEGM1rkm5vsvgYWFiQ9dxkK9W7kZ5Om0rr9nfxw9rNjDM3TwmpX_4VUoy9kOKdFLp-DwoGI6pa3z1ip9JYvapFZR4f9s6esDOiH0IIuZb6KTtRyq5VbdUp-7PpOcUy8s03TmUME08tpzG3HpDfTyGnh6njNCBEpKUWcDn1BQO_idfqAy_pt8-B-NgHzFR8H2J_x4f4KxXfHaKGnACJdhnLRT7cp5LAz2gqEXh6iMGXmPoFlNSN2OMz9qT1HeHz_XrOvn_-dHP5dXV1_WVz-fFqBdrKssIgnfSVkiaIVilUwmmwwUrpBIjgat8aB-o2iMpaXGtV19ZLUwejNRio9Dl7s8udX_lzRCrNNhJg1_ke00iNFEpUWirnZvp2RyEnooxtM-S49XmaUbNMozlOY8av9rnj7RbDgf77_hlc7IEn8F2bfQ-Rjs4Ko1y1uNc7lwkO1WOjZgjtbF7-z-i_ZGWp6A</recordid><startdate>20120101</startdate><enddate>20120101</enddate><creator>Lin, Huaxiang</creator><creator>Long, Jinlin</creator><creator>Gu, Quan</creator><creator>Zhang, Wenxin</creator><creator>Ruan, Rusheng</creator><creator>Li, Zhaohui</creator><creator>Wang, Xuxu</creator><general>Royal Society of Chemistry</general><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20120101</creationdate><title>In situ IR study of surface hydroxyl species of dehydrated TiO2: towards understanding pivotal surface processes of TiO2 photocatalytic oxidation of toluene</title><author>Lin, Huaxiang ; Long, Jinlin ; Gu, Quan ; Zhang, Wenxin ; Ruan, Rusheng ; Li, Zhaohui ; Wang, Xuxu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c361t-ed171a8214d0f22e2073c6d61170c0d79af47c2bd0866e532996a149d433c4c83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Catalysis</topic><topic>Chemistry</topic><topic>Exact sciences and technology</topic><topic>General and physical chemistry</topic><topic>Photochemistry</topic><topic>Physical chemistry of induced reactions (with radiations, particles and ultrasonics)</topic><topic>Surface physical chemistry</topic><topic>Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lin, Huaxiang</creatorcontrib><creatorcontrib>Long, Jinlin</creatorcontrib><creatorcontrib>Gu, Quan</creatorcontrib><creatorcontrib>Zhang, Wenxin</creatorcontrib><creatorcontrib>Ruan, Rusheng</creatorcontrib><creatorcontrib>Li, Zhaohui</creatorcontrib><creatorcontrib>Wang, Xuxu</creatorcontrib><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Physical chemistry chemical physics : PCCP</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lin, Huaxiang</au><au>Long, Jinlin</au><au>Gu, Quan</au><au>Zhang, Wenxin</au><au>Ruan, Rusheng</au><au>Li, Zhaohui</au><au>Wang, Xuxu</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>In situ IR study of surface hydroxyl species of dehydrated TiO2: towards understanding pivotal surface processes of TiO2 photocatalytic oxidation of toluene</atitle><jtitle>Physical chemistry chemical physics : PCCP</jtitle><addtitle>Phys Chem Chem Phys</addtitle><date>2012-01-01</date><risdate>2012</risdate><volume>14</volume><issue>26</issue><spage>9468</spage><epage>9474</epage><pages>9468-9474</pages><issn>1463-9076</issn><eissn>1463-9084</eissn><abstract>The surface species on P25-TiO
2
were characterized by FTIR after evacuation at 50-550 °C. The functions of OH groups on P25-TiO
2
catalysts have been tested by the adsorption and photooxidation of toluene in an
in situ
IR cell. FTIR studies show that the hydroxyl species on P25-TiO
2
are clearly temperature-dependent and P25-TiO
2
has six isolated hydroxyls with bands at 3734, 3715, 3688, 3671, 3658 and 3640 cm
−1
. The OH groups on P25 play different roles in the photo-oxidation process: surface hydroxyls with bands at 3688, 3671, 3658 and 3640 cm
−1
act as adsorption sites while surface hydroxyls with bands at 3734 and 3715 cm
−1
act as sources of the &z.rad;OH radical.
The isolated hydroxyls on the P25-TiO
2
surface are selective to the adsorption of toluene. The 3688, 3671 and 3640 cm
−1
bands were preferentially removed than the 3735 and 3715 cm
−1
bands during the initial adsorption of toluene.</abstract><cop>Cambridge</cop><pub>Royal Society of Chemistry</pub><pmid>22652962</pmid><doi>10.1039/c2cp40893g</doi><tpages>7</tpages></addata></record> |
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| ispartof | Physical chemistry chemical physics : PCCP, 2012-01, Vol.14 (26), p.9468-9474 |
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| language | eng |
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| source | Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection |
| subjects | Catalysis Chemistry Exact sciences and technology General and physical chemistry Photochemistry Physical chemistry of induced reactions (with radiations, particles and ultrasonics) Surface physical chemistry Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry |
| title | In situ IR study of surface hydroxyl species of dehydrated TiO2: towards understanding pivotal surface processes of TiO2 photocatalytic oxidation of toluene |
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