Sol-gel synthesis of sub-micron titanium-doped chromia powders for gas sensing
Cr1 − xTixO3+x/2, with x = 0.05,0.1 and 0.2, powders have been synthesised by an emulsion gelation route starting from aqueous chloride solutions. Gel particles were produced by de-anionisation of a water-in-oil emulsion using an immiscible organic amine solution. After calcination to produce the ox...
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| Veröffentlicht in: | Journal of sol-gel science and technology 2003, Vol.26 (1-3), p.793-797 |
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| creator | NARTOWSKI, A. M ATKINSON, A |
| description | Cr1 − xTixO3+x/2, with x = 0.05,0.1 and 0.2, powders have been synthesised by an emulsion gelation route starting from aqueous chloride solutions. Gel particles were produced by de-anionisation of a water-in-oil emulsion using an immiscible organic amine solution. After calcination to produce the oxide, the powders were characterised in terms of particle size distribution, crystallinity, surface composition, particle shape, surface area, anion contamination and doping uniformity. By optimising the processing variables it has been possible to produce un-agglomerated, spherical, uniformly doped powders with a narrow particle size distribution. The mean particle size can be controlled within the range 0.3 to 3 microns and the particles are porous and nano-crystalline. The powders have been used to fabricate thick film sensor structures and show good response to combustible gases in air. |
| doi_str_mv | 10.1023/A:1020731128682 |
| format | Article |
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M ; ATKINSON, A</creator><creatorcontrib>NARTOWSKI, A. M ; ATKINSON, A</creatorcontrib><description>Cr1 − xTixO3+x/2, with x = 0.05,0.1 and 0.2, powders have been synthesised by an emulsion gelation route starting from aqueous chloride solutions. Gel particles were produced by de-anionisation of a water-in-oil emulsion using an immiscible organic amine solution. After calcination to produce the oxide, the powders were characterised in terms of particle size distribution, crystallinity, surface composition, particle shape, surface area, anion contamination and doping uniformity. By optimising the processing variables it has been possible to produce un-agglomerated, spherical, uniformly doped powders with a narrow particle size distribution. The mean particle size can be controlled within the range 0.3 to 3 microns and the particles are porous and nano-crystalline. The powders have been used to fabricate thick film sensor structures and show good response to combustible gases in air.</description><identifier>ISSN: 0928-0707</identifier><identifier>EISSN: 1573-4846</identifier><identifier>DOI: 10.1023/A:1020731128682</identifier><language>eng</language><publisher>Heidelberg: Springer</publisher><subject>Chemistry ; Chromium oxides ; Colloidal gels. Colloidal sols ; Colloidal state and disperse state ; Crystal structure ; Crystallinity ; Exact sciences and technology ; Flammability ; Gas sensors ; Gelation ; General and physical chemistry ; Particle shape ; Particle size ; Particle size distribution ; Sol-gel processes ; Spherical powders ; Titanium</subject><ispartof>Journal of sol-gel science and technology, 2003, Vol.26 (1-3), p.793-797</ispartof><rights>2003 INIST-CNRS</rights><rights>Journal of Sol-Gel Science and Technology is a copyright of Springer, (2003). All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c257t-9395a4a8a529ef2886aa44da654a871d05fc0df45a6f84b34fd8bf5947e04a8d3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>309,310,314,780,784,789,790,4050,4051,23930,23931,25140,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=14548120$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>NARTOWSKI, A. M</creatorcontrib><creatorcontrib>ATKINSON, A</creatorcontrib><title>Sol-gel synthesis of sub-micron titanium-doped chromia powders for gas sensing</title><title>Journal of sol-gel science and technology</title><description>Cr1 − xTixO3+x/2, with x = 0.05,0.1 and 0.2, powders have been synthesised by an emulsion gelation route starting from aqueous chloride solutions. Gel particles were produced by de-anionisation of a water-in-oil emulsion using an immiscible organic amine solution. After calcination to produce the oxide, the powders were characterised in terms of particle size distribution, crystallinity, surface composition, particle shape, surface area, anion contamination and doping uniformity. By optimising the processing variables it has been possible to produce un-agglomerated, spherical, uniformly doped powders with a narrow particle size distribution. The mean particle size can be controlled within the range 0.3 to 3 microns and the particles are porous and nano-crystalline. The powders have been used to fabricate thick film sensor structures and show good response to combustible gases in air.</description><subject>Chemistry</subject><subject>Chromium oxides</subject><subject>Colloidal gels. Colloidal sols</subject><subject>Colloidal state and disperse state</subject><subject>Crystal structure</subject><subject>Crystallinity</subject><subject>Exact sciences and technology</subject><subject>Flammability</subject><subject>Gas sensors</subject><subject>Gelation</subject><subject>General and physical chemistry</subject><subject>Particle shape</subject><subject>Particle size</subject><subject>Particle size distribution</subject><subject>Sol-gel processes</subject><subject>Spherical powders</subject><subject>Titanium</subject><issn>0928-0707</issn><issn>1573-4846</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNotjc1LwzAchoMoOKdnrwHxGM1nk3obwy8YelDP5bcm2TLapCYt4n9vwZ0eeHl4XoSuGb1jlIv71cMMqgVj3FSGn6AFU1oQaWR1iha05oZQTfU5uijlQClVkukFevtIHdm5DpffOO5dCQUnj8u0JX1oc4p4DCPEMPXEpsFZ3O5z6gPgIf1Ylwv2KeMdFFxcLCHuLtGZh664qyOX6Ovp8XP9Qjbvz6_r1Ya0XOmR1KJWIMGA4rXz3JgKQEoLlZpHzSxVvqXWSwWVN3IrpLdm61UttaOzYcUS3fx3h5y-J1fG5pCmHOfLhnNVK8O5rmfr9mhBaaHzGWIbSjPk0EP-bZhU0jBOxR91NV1Z</recordid><startdate>2003</startdate><enddate>2003</enddate><creator>NARTOWSKI, A. 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By optimising the processing variables it has been possible to produce un-agglomerated, spherical, uniformly doped powders with a narrow particle size distribution. The mean particle size can be controlled within the range 0.3 to 3 microns and the particles are porous and nano-crystalline. The powders have been used to fabricate thick film sensor structures and show good response to combustible gases in air.</abstract><cop>Heidelberg</cop><pub>Springer</pub><doi>10.1023/A:1020731128682</doi><tpages>5</tpages></addata></record> |
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| ispartof | Journal of sol-gel science and technology, 2003, Vol.26 (1-3), p.793-797 |
| issn | 0928-0707 1573-4846 |
| language | eng |
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| subjects | Chemistry Chromium oxides Colloidal gels. Colloidal sols Colloidal state and disperse state Crystal structure Crystallinity Exact sciences and technology Flammability Gas sensors Gelation General and physical chemistry Particle shape Particle size Particle size distribution Sol-gel processes Spherical powders Titanium |
| title | Sol-gel synthesis of sub-micron titanium-doped chromia powders for gas sensing |
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