Enhanced Performance of NaOH-Modified Pt/TiO2 toward Room Temperature Selective Oxidation of Formaldehyde
Pt/TiO2 catalysts with various Pt loadings (0.05–2 wt %) were prepared by a combined NaOH-assisted impregnation of titania with Pt precursor and NaBH4-reduction. The thermal catalytic activity was evaluated toward catalytic decomposition of formaldehyde (HCHO) vapor in the presence of toluene under...
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| Veröffentlicht in: | Environmental science & technology 2013-03, Vol.47 (6), p.2777-2783 |
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| container_title | Environmental science & technology |
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| creator | Nie, Longhui Yu, Jiaguo Li, Xinyang Cheng, Bei Liu, Gang Jaroniec, Mietek |
| description | Pt/TiO2 catalysts with various Pt loadings (0.05–2 wt %) were prepared by a combined NaOH-assisted impregnation of titania with Pt precursor and NaBH4-reduction. The thermal catalytic activity was evaluated toward catalytic decomposition of formaldehyde (HCHO) vapor in the presence of toluene under ambient conditions. HCHO could be selectively oxidized into CO2 and H2O over Pt/TiO2 catalysts and toluene had no change. Pt/TiO2 catalysts prepared with the assistance of NaOH showed higher HCHO oxidation activity than those without NaOH due to the introduction of additional surface hydroxyl groups, the enhanced adsorption capacity toward HCHO, and larger mesopores and macropores facilitating diffusion and transport of reactants and products. The as-prepared Pt/TiO2 catalysts with an optimal Pt loading of 1 wt % exhibited high catalytic stability. Considering the versatile combination of noble-metal nanoparticles and supports, this work will provide new insights to the design of high-performance catalysts for indoor air purification. |
| doi_str_mv | 10.1021/es3045949 |
| format | Article |
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The thermal catalytic activity was evaluated toward catalytic decomposition of formaldehyde (HCHO) vapor in the presence of toluene under ambient conditions. HCHO could be selectively oxidized into CO2 and H2O over Pt/TiO2 catalysts and toluene had no change. Pt/TiO2 catalysts prepared with the assistance of NaOH showed higher HCHO oxidation activity than those without NaOH due to the introduction of additional surface hydroxyl groups, the enhanced adsorption capacity toward HCHO, and larger mesopores and macropores facilitating diffusion and transport of reactants and products. The as-prepared Pt/TiO2 catalysts with an optimal Pt loading of 1 wt % exhibited high catalytic stability. Considering the versatile combination of noble-metal nanoparticles and supports, this work will provide new insights to the design of high-performance catalysts for indoor air purification.</description><identifier>ISSN: 0013-936X</identifier><identifier>EISSN: 1520-5851</identifier><identifier>DOI: 10.1021/es3045949</identifier><identifier>PMID: 23438899</identifier><identifier>CODEN: ESTHAG</identifier><language>eng</language><publisher>Washington, DC: American Chemical Society</publisher><subject>Air Pollutants - chemistry ; Air Pollutants - isolation & purification ; Air Pollution, Indoor - analysis ; Applied sciences ; Atmospheric pollution ; Buildings. Public works ; Catalysis ; Exact sciences and technology ; Formaldehyde - chemistry ; Formaldehyde - isolation & purification ; Indoor pollution and occupational exposure ; Metal Nanoparticles - chemistry ; Oxidation-Reduction ; Platinum - chemistry ; Pollution ; Pollution indoor buildings ; Sodium Hydroxide - chemistry ; Titanium - chemistry ; Volatilization</subject><ispartof>Environmental science & technology, 2013-03, Vol.47 (6), p.2777-2783</ispartof><rights>Copyright © 2013 American Chemical Society</rights><rights>2014 INIST-CNRS</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://pubs.acs.org/doi/pdf/10.1021/es3045949$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/es3045949$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>315,781,785,27081,27929,27930,56743,56793</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=27178670$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/23438899$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Nie, Longhui</creatorcontrib><creatorcontrib>Yu, Jiaguo</creatorcontrib><creatorcontrib>Li, Xinyang</creatorcontrib><creatorcontrib>Cheng, Bei</creatorcontrib><creatorcontrib>Liu, Gang</creatorcontrib><creatorcontrib>Jaroniec, Mietek</creatorcontrib><title>Enhanced Performance of NaOH-Modified Pt/TiO2 toward Room Temperature Selective Oxidation of Formaldehyde</title><title>Environmental science & technology</title><addtitle>Environ. Sci. Technol</addtitle><description>Pt/TiO2 catalysts with various Pt loadings (0.05–2 wt %) were prepared by a combined NaOH-assisted impregnation of titania with Pt precursor and NaBH4-reduction. The thermal catalytic activity was evaluated toward catalytic decomposition of formaldehyde (HCHO) vapor in the presence of toluene under ambient conditions. HCHO could be selectively oxidized into CO2 and H2O over Pt/TiO2 catalysts and toluene had no change. Pt/TiO2 catalysts prepared with the assistance of NaOH showed higher HCHO oxidation activity than those without NaOH due to the introduction of additional surface hydroxyl groups, the enhanced adsorption capacity toward HCHO, and larger mesopores and macropores facilitating diffusion and transport of reactants and products. The as-prepared Pt/TiO2 catalysts with an optimal Pt loading of 1 wt % exhibited high catalytic stability. Considering the versatile combination of noble-metal nanoparticles and supports, this work will provide new insights to the design of high-performance catalysts for indoor air purification.</description><subject>Air Pollutants - chemistry</subject><subject>Air Pollutants - isolation & purification</subject><subject>Air Pollution, Indoor - analysis</subject><subject>Applied sciences</subject><subject>Atmospheric pollution</subject><subject>Buildings. Public works</subject><subject>Catalysis</subject><subject>Exact sciences and technology</subject><subject>Formaldehyde - chemistry</subject><subject>Formaldehyde - isolation & purification</subject><subject>Indoor pollution and occupational exposure</subject><subject>Metal Nanoparticles - chemistry</subject><subject>Oxidation-Reduction</subject><subject>Platinum - chemistry</subject><subject>Pollution</subject><subject>Pollution indoor buildings</subject><subject>Sodium Hydroxide - chemistry</subject><subject>Titanium - chemistry</subject><subject>Volatilization</subject><issn>0013-936X</issn><issn>1520-5851</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpFkU1LxDAQhoMoun4c_APSi-ClOkk2bXKURV1BXdEVvJW0mWCkbdakVfffu8XVPQ3DPDww70vIMYVzCoxeYOQwFmqstsiICgapkIJukxEA5ani2ese2Y_xHQAYB7lL9hgfcymVGhF31b7ptkKTPGKwPjTDknibPOjZNL33xlk3HLuLuZuxpPNfOpjkyfsmmWOzwKC7PmDyjDVWnfvEZPbtjO6cbwfJ9SCsDb4tDR6SHavriEfreUBerq_mk2l6N7u5nVzepZrzvEt5Ti3jqAxjSltWCVCUiYxZiQIslWiMqqTJrNVYMpOXIDS1GbUllFoxyw_I2a93EfxHj7ErGhcrrGvdou9jQTmVoDgXfIWerNG-bNAUi-AaHZbFXzwr4HQN6Fjp2oZVOi5uuJzmMsthw-kqFu--D-3qw4JCMdRT_NfDfwAfr38b</recordid><startdate>20130319</startdate><enddate>20130319</enddate><creator>Nie, Longhui</creator><creator>Yu, Jiaguo</creator><creator>Li, Xinyang</creator><creator>Cheng, Bei</creator><creator>Liu, Gang</creator><creator>Jaroniec, Mietek</creator><general>American Chemical Society</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>7X8</scope></search><sort><creationdate>20130319</creationdate><title>Enhanced Performance of NaOH-Modified Pt/TiO2 toward Room Temperature Selective Oxidation of Formaldehyde</title><author>Nie, Longhui ; Yu, Jiaguo ; Li, Xinyang ; Cheng, Bei ; Liu, Gang ; Jaroniec, Mietek</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a337t-371f23e9d229af2c50912562f8e50f18edd9c8d6ffaeb2d7b05a1f61fb0ba92f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Air Pollutants - chemistry</topic><topic>Air Pollutants - isolation & purification</topic><topic>Air Pollution, Indoor - analysis</topic><topic>Applied sciences</topic><topic>Atmospheric pollution</topic><topic>Buildings. Public works</topic><topic>Catalysis</topic><topic>Exact sciences and technology</topic><topic>Formaldehyde - chemistry</topic><topic>Formaldehyde - isolation & purification</topic><topic>Indoor pollution and occupational exposure</topic><topic>Metal Nanoparticles - chemistry</topic><topic>Oxidation-Reduction</topic><topic>Platinum - chemistry</topic><topic>Pollution</topic><topic>Pollution indoor buildings</topic><topic>Sodium Hydroxide - chemistry</topic><topic>Titanium - chemistry</topic><topic>Volatilization</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Nie, Longhui</creatorcontrib><creatorcontrib>Yu, Jiaguo</creatorcontrib><creatorcontrib>Li, Xinyang</creatorcontrib><creatorcontrib>Cheng, Bei</creatorcontrib><creatorcontrib>Liu, Gang</creatorcontrib><creatorcontrib>Jaroniec, Mietek</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>MEDLINE - Academic</collection><jtitle>Environmental science & technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nie, Longhui</au><au>Yu, Jiaguo</au><au>Li, Xinyang</au><au>Cheng, Bei</au><au>Liu, Gang</au><au>Jaroniec, Mietek</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Enhanced Performance of NaOH-Modified Pt/TiO2 toward Room Temperature Selective Oxidation of Formaldehyde</atitle><jtitle>Environmental science & technology</jtitle><addtitle>Environ. Sci. Technol</addtitle><date>2013-03-19</date><risdate>2013</risdate><volume>47</volume><issue>6</issue><spage>2777</spage><epage>2783</epage><pages>2777-2783</pages><issn>0013-936X</issn><eissn>1520-5851</eissn><coden>ESTHAG</coden><abstract>Pt/TiO2 catalysts with various Pt loadings (0.05–2 wt %) were prepared by a combined NaOH-assisted impregnation of titania with Pt precursor and NaBH4-reduction. The thermal catalytic activity was evaluated toward catalytic decomposition of formaldehyde (HCHO) vapor in the presence of toluene under ambient conditions. HCHO could be selectively oxidized into CO2 and H2O over Pt/TiO2 catalysts and toluene had no change. Pt/TiO2 catalysts prepared with the assistance of NaOH showed higher HCHO oxidation activity than those without NaOH due to the introduction of additional surface hydroxyl groups, the enhanced adsorption capacity toward HCHO, and larger mesopores and macropores facilitating diffusion and transport of reactants and products. The as-prepared Pt/TiO2 catalysts with an optimal Pt loading of 1 wt % exhibited high catalytic stability. Considering the versatile combination of noble-metal nanoparticles and supports, this work will provide new insights to the design of high-performance catalysts for indoor air purification.</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><pmid>23438899</pmid><doi>10.1021/es3045949</doi><tpages>7</tpages></addata></record> |
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| identifier | ISSN: 0013-936X |
| ispartof | Environmental science & technology, 2013-03, Vol.47 (6), p.2777-2783 |
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| language | eng |
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| source | MEDLINE; ACS Publications |
| subjects | Air Pollutants - chemistry Air Pollutants - isolation & purification Air Pollution, Indoor - analysis Applied sciences Atmospheric pollution Buildings. Public works Catalysis Exact sciences and technology Formaldehyde - chemistry Formaldehyde - isolation & purification Indoor pollution and occupational exposure Metal Nanoparticles - chemistry Oxidation-Reduction Platinum - chemistry Pollution Pollution indoor buildings Sodium Hydroxide - chemistry Titanium - chemistry Volatilization |
| title | Enhanced Performance of NaOH-Modified Pt/TiO2 toward Room Temperature Selective Oxidation of Formaldehyde |
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