Photocatalytic activity of TiO2 nanoparticles: effect of thermal annealing under various gaseous atmospheres
The structure, composition and photocatalytic activity of TiO2 nanoparticles annealed in various gas atmospheres (N2, NH3 and H2) were studied in this work. The effect of treatment on crystal structure, particle size, chemical composition and optical absorbance were assessed by means of x-ray diffra...
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| Veröffentlicht in: | Nanotechnology 2012-11, Vol.23 (47), p.475711-475711 |
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| creator | Sarkar, Anjana Shchukarev, Andrey Leino, Anne-Riikka Kordas, Krisztian Mikkola, Jyri-Pekka Petrov, Pavel O Tuchina, Elena S Popov, Alexey P Darvin, Maxim E Meinke, Martina C Lademann, Juergen Tuchin, Valery V |
| description | The structure, composition and photocatalytic activity of TiO2 nanoparticles annealed in various gas atmospheres (N2, NH3 and H2) were studied in this work. The effect of treatment on crystal structure, particle size, chemical composition and optical absorbance were assessed by means of x-ray diffraction, transmission electron microscopy, x-ray photoelectron spectroscopy and diffuse optical reflectance/transmittance measurements, respectively. Photocatalytic properties of the materials were evaluated by three different methods: degradation of methyl orange in water, killing of Staphylococcus aureus bacteria and photogeneration of radicals in the presence of 3-carboxy-2,2,5,5-tetramethyl pyrrolidine-1-oxyl (PCA) marker molecules. The results indicate that the correlation between pretreatment and the photocatalytic performance depends on the photocatalytic processes and cannot be generalized. |
| doi_str_mv | 10.1088/0957-4484/23/47/475711 |
| format | Article |
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The effect of treatment on crystal structure, particle size, chemical composition and optical absorbance were assessed by means of x-ray diffraction, transmission electron microscopy, x-ray photoelectron spectroscopy and diffuse optical reflectance/transmittance measurements, respectively. Photocatalytic properties of the materials were evaluated by three different methods: degradation of methyl orange in water, killing of Staphylococcus aureus bacteria and photogeneration of radicals in the presence of 3-carboxy-2,2,5,5-tetramethyl pyrrolidine-1-oxyl (PCA) marker molecules. The results indicate that the correlation between pretreatment and the photocatalytic performance depends on the photocatalytic processes and cannot be generalized.</description><identifier>ISSN: 0957-4484</identifier><identifier>EISSN: 1361-6528</identifier><identifier>DOI: 10.1088/0957-4484/23/47/475711</identifier><identifier>PMID: 23117414</identifier><identifier>CODEN: NNOTER</identifier><language>eng</language><publisher>England: IOP Publishing</publisher><subject>Anti-Bacterial Agents - chemistry ; Anti-Bacterial Agents - pharmacology ; Azo Compounds - chemistry ; Catalysis ; Free Radicals - chemistry ; Gases - chemistry ; Humans ; Nanoparticles - chemistry ; Nanoparticles - ultrastructure ; Photolysis ; Staphylococcal Infections - prevention & control ; Staphylococcus aureus - drug effects ; Titanium - chemistry ; Titanium - pharmacology</subject><ispartof>Nanotechnology, 2012-11, Vol.23 (47), p.475711-475711</ispartof><rights>2012 IOP Publishing Ltd</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://iopscience.iop.org/article/10.1088/0957-4484/23/47/475711/pdf$$EPDF$$P50$$Giop$$H</linktopdf><link.rule.ids>314,776,780,27903,27904,53824,53871</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/23117414$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Sarkar, Anjana</creatorcontrib><creatorcontrib>Shchukarev, Andrey</creatorcontrib><creatorcontrib>Leino, Anne-Riikka</creatorcontrib><creatorcontrib>Kordas, Krisztian</creatorcontrib><creatorcontrib>Mikkola, Jyri-Pekka</creatorcontrib><creatorcontrib>Petrov, Pavel O</creatorcontrib><creatorcontrib>Tuchina, Elena S</creatorcontrib><creatorcontrib>Popov, Alexey P</creatorcontrib><creatorcontrib>Darvin, Maxim E</creatorcontrib><creatorcontrib>Meinke, Martina C</creatorcontrib><creatorcontrib>Lademann, Juergen</creatorcontrib><creatorcontrib>Tuchin, Valery V</creatorcontrib><title>Photocatalytic activity of TiO2 nanoparticles: effect of thermal annealing under various gaseous atmospheres</title><title>Nanotechnology</title><addtitle>Nano</addtitle><addtitle>Nanotechnology</addtitle><description>The structure, composition and photocatalytic activity of TiO2 nanoparticles annealed in various gas atmospheres (N2, NH3 and H2) were studied in this work. The effect of treatment on crystal structure, particle size, chemical composition and optical absorbance were assessed by means of x-ray diffraction, transmission electron microscopy, x-ray photoelectron spectroscopy and diffuse optical reflectance/transmittance measurements, respectively. Photocatalytic properties of the materials were evaluated by three different methods: degradation of methyl orange in water, killing of Staphylococcus aureus bacteria and photogeneration of radicals in the presence of 3-carboxy-2,2,5,5-tetramethyl pyrrolidine-1-oxyl (PCA) marker molecules. The results indicate that the correlation between pretreatment and the photocatalytic performance depends on the photocatalytic processes and cannot be generalized.</description><subject>Anti-Bacterial Agents - chemistry</subject><subject>Anti-Bacterial Agents - pharmacology</subject><subject>Azo Compounds - chemistry</subject><subject>Catalysis</subject><subject>Free Radicals - chemistry</subject><subject>Gases - chemistry</subject><subject>Humans</subject><subject>Nanoparticles - chemistry</subject><subject>Nanoparticles - ultrastructure</subject><subject>Photolysis</subject><subject>Staphylococcal Infections - prevention & control</subject><subject>Staphylococcus aureus - drug effects</subject><subject>Titanium - chemistry</subject><subject>Titanium - pharmacology</subject><issn>0957-4484</issn><issn>1361-6528</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNo9kU1r5DAMhk3ZpTPt7l8oPvaSHcsfiae3MuwXFNpD92y0iTLjksRp7AzMv1-nnS4IXiE9EuIVYzcgvoGwdiO2piq0tnoj1UZXOUwFcMHWoEooSiPtJ7b-D63YVYwvQgBYCZdsJRVApUGvWfd0CCnUmLA7JV9zrJM_-nTioeXP_lHyAYcw4pR7HcU7Tm1LdVq66UBTjx3HYSDs_LDn89DQxI84-TBHvsdIi2LqQxwzTPEL-9xiF-nrWa_Znx_fn3e_iofHn7939w-FB6tTQbUgCaYiQaaxpOtGaaVbbaUxCFWDqrGawKgtltIoKLe5XhLYbY0Vikpds9v3veMUXmeKyfU-1tR1OCwnOQBZlpBnbUZvzuj8t6fGjZPvcTq5D4cyIN8BH0b3EuZpyJc7EG55g1scdovDecDpnL69Qf0DaYh5DA</recordid><startdate>20121130</startdate><enddate>20121130</enddate><creator>Sarkar, Anjana</creator><creator>Shchukarev, Andrey</creator><creator>Leino, Anne-Riikka</creator><creator>Kordas, Krisztian</creator><creator>Mikkola, Jyri-Pekka</creator><creator>Petrov, Pavel O</creator><creator>Tuchina, Elena S</creator><creator>Popov, Alexey P</creator><creator>Darvin, Maxim E</creator><creator>Meinke, Martina C</creator><creator>Lademann, Juergen</creator><creator>Tuchin, Valery V</creator><general>IOP Publishing</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>7X8</scope></search><sort><creationdate>20121130</creationdate><title>Photocatalytic activity of TiO2 nanoparticles: effect of thermal annealing under various gaseous atmospheres</title><author>Sarkar, Anjana ; 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The effect of treatment on crystal structure, particle size, chemical composition and optical absorbance were assessed by means of x-ray diffraction, transmission electron microscopy, x-ray photoelectron spectroscopy and diffuse optical reflectance/transmittance measurements, respectively. Photocatalytic properties of the materials were evaluated by three different methods: degradation of methyl orange in water, killing of Staphylococcus aureus bacteria and photogeneration of radicals in the presence of 3-carboxy-2,2,5,5-tetramethyl pyrrolidine-1-oxyl (PCA) marker molecules. The results indicate that the correlation between pretreatment and the photocatalytic performance depends on the photocatalytic processes and cannot be generalized.</abstract><cop>England</cop><pub>IOP Publishing</pub><pmid>23117414</pmid><doi>10.1088/0957-4484/23/47/475711</doi><tpages>8</tpages></addata></record> |
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| subjects | Anti-Bacterial Agents - chemistry Anti-Bacterial Agents - pharmacology Azo Compounds - chemistry Catalysis Free Radicals - chemistry Gases - chemistry Humans Nanoparticles - chemistry Nanoparticles - ultrastructure Photolysis Staphylococcal Infections - prevention & control Staphylococcus aureus - drug effects Titanium - chemistry Titanium - pharmacology |
| title | Photocatalytic activity of TiO2 nanoparticles: effect of thermal annealing under various gaseous atmospheres |
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