Alkoxide-Derived Titania Particles: Use of Electrolytes to Control Size and Agglomeration Levels
Methods of controlling the size and morphology of particles precipitated from the hydrolysis and condensation of tetraethyl orthotitanate (TEOT) in aqueous ethanol solutions through the addition of electrolytes are described. The precipitates display great sensitivity to agitation where, above a cri...
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| Veröffentlicht in: | Journal of the American Ceramic Society 1992-06, Vol.75 (6), p.1587-1595 |
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| container_title | Journal of the American Ceramic Society |
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| creator | Look, Jee Loon Zukoski, Charles F. |
| description | Methods of controlling the size and morphology of particles precipitated from the hydrolysis and condensation of tetraethyl orthotitanate (TEOT) in aqueous ethanol solutions through the addition of electrolytes are described. The precipitates display great sensitivity to agitation where, above a critical shear rate, agglomerated morphologies are observed. For reactions carried out at shear rates less than the critical value, narrow size distribution, spherical titania particles are formed under conditions where the particles have electrophoretic mobilities greater than 0.2 × 10−8 m2· V−1· s−1 for 0.05M < [TEOT] < 0.2M and 0.15M < H2O < 0.9M. Addition of HCl and NaCl to the precipitation solution increases particle charge and expands the TEOT, H2O concentration ranges where uniform particles are formed. |
| doi_str_mv | 10.1111/j.1151-2916.1992.tb04230.x |
| format | Article |
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The precipitates display great sensitivity to agitation where, above a critical shear rate, agglomerated morphologies are observed. For reactions carried out at shear rates less than the critical value, narrow size distribution, spherical titania particles are formed under conditions where the particles have electrophoretic mobilities greater than 0.2 × 10−8 m2· V−1· s−1 for 0.05M < [TEOT] < 0.2M and 0.15M < H2O < 0.9M. Addition of HCl and NaCl to the precipitation solution increases particle charge and expands the TEOT, H2O concentration ranges where uniform particles are formed.</description><identifier>ISSN: 0002-7820</identifier><identifier>EISSN: 1551-2916</identifier><identifier>DOI: 10.1111/j.1151-2916.1992.tb04230.x</identifier><identifier>CODEN: JACTAW</identifier><language>eng</language><publisher>Oxford, UK: Blackwell Publishing Ltd</publisher><subject>agglomeration ; alkoxide ; Chemistry ; Colloidal state and disperse state ; electrolytes ; Exact sciences and technology ; General and physical chemistry ; General, apparatus, technics of preparation ; particle size distribution ; titania</subject><ispartof>Journal of the American Ceramic Society, 1992-06, Vol.75 (6), p.1587-1595</ispartof><rights>1992 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4847-d97ed55dee8dc2c7b846ce28dc6f9a4d42a416dec3aa696d506bf3af69e1fcc23</citedby><cites>FETCH-LOGICAL-c4847-d97ed55dee8dc2c7b846ce28dc6f9a4d42a416dec3aa696d506bf3af69e1fcc23</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1111%2Fj.1151-2916.1992.tb04230.x$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1111%2Fj.1151-2916.1992.tb04230.x$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27901,27902,45550,45551</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=5533199$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Look, Jee Loon</creatorcontrib><creatorcontrib>Zukoski, Charles F.</creatorcontrib><title>Alkoxide-Derived Titania Particles: Use of Electrolytes to Control Size and Agglomeration Levels</title><title>Journal of the American Ceramic Society</title><description>Methods of controlling the size and morphology of particles precipitated from the hydrolysis and condensation of tetraethyl orthotitanate (TEOT) in aqueous ethanol solutions through the addition of electrolytes are described. The precipitates display great sensitivity to agitation where, above a critical shear rate, agglomerated morphologies are observed. For reactions carried out at shear rates less than the critical value, narrow size distribution, spherical titania particles are formed under conditions where the particles have electrophoretic mobilities greater than 0.2 × 10−8 m2· V−1· s−1 for 0.05M < [TEOT] < 0.2M and 0.15M < H2O < 0.9M. Addition of HCl and NaCl to the precipitation solution increases particle charge and expands the TEOT, H2O concentration ranges where uniform particles are formed.</description><subject>agglomeration</subject><subject>alkoxide</subject><subject>Chemistry</subject><subject>Colloidal state and disperse state</subject><subject>electrolytes</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>General, apparatus, technics of preparation</subject><subject>particle size distribution</subject><subject>titania</subject><issn>0002-7820</issn><issn>1551-2916</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1992</creationdate><recordtype>article</recordtype><recordid>eNqVkEFvEzEQhS0EEiHlP1gIcdt0ba-9656ItiGljQCJVnAzjj1bOXXWxd62SX89XiXqnbmMnubNm9GH0AdSzkiu001unBRUEjEjUtLZsC4rysrZ7hWaEH4cvUaTsixpUTe0fIvepbTJksimmqA_c38Xds5CcQ7RPYLF127QvdP4h46DMx7SGb5JgEOHFx7MEIPfD5DwEHAb-lHin-4ZsO4tnt_e-rCFqAcXeryCR_DpBL3ptE_w_tin6ObL4rq9KFbfl1_b-aowVVPVhZU1WM4tQGMNNfW6qYQBmoXopK5sRXVFhAXDtBZSWF6Kdcd0JySQzhjKpujTIfc-hr8PkAa1dcmA97qH8JAU5aKpGRXZeHYwmhhSitCp--i2Ou4VKdUIVW3UCFWN5NQIVR2hql1e_ni8opPRvou6Ny69JHDOWN7Its8H25PzsP-PA-py3i4Iz59OUXGIcGmA3UuEjndK1Kzm6te3pWKXctnS-kr9Zv8AB3edBA</recordid><startdate>199206</startdate><enddate>199206</enddate><creator>Look, Jee Loon</creator><creator>Zukoski, Charles F.</creator><general>Blackwell Publishing Ltd</general><general>Blackwell</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>199206</creationdate><title>Alkoxide-Derived Titania Particles: Use of Electrolytes to Control Size and Agglomeration Levels</title><author>Look, Jee Loon ; Zukoski, Charles F.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4847-d97ed55dee8dc2c7b846ce28dc6f9a4d42a416dec3aa696d506bf3af69e1fcc23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1992</creationdate><topic>agglomeration</topic><topic>alkoxide</topic><topic>Chemistry</topic><topic>Colloidal state and disperse state</topic><topic>electrolytes</topic><topic>Exact sciences and technology</topic><topic>General and physical chemistry</topic><topic>General, apparatus, technics of preparation</topic><topic>particle size distribution</topic><topic>titania</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Look, Jee Loon</creatorcontrib><creatorcontrib>Zukoski, Charles F.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of the American Ceramic Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Look, Jee Loon</au><au>Zukoski, Charles F.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Alkoxide-Derived Titania Particles: Use of Electrolytes to Control Size and Agglomeration Levels</atitle><jtitle>Journal of the American Ceramic Society</jtitle><date>1992-06</date><risdate>1992</risdate><volume>75</volume><issue>6</issue><spage>1587</spage><epage>1595</epage><pages>1587-1595</pages><issn>0002-7820</issn><eissn>1551-2916</eissn><coden>JACTAW</coden><abstract>Methods of controlling the size and morphology of particles precipitated from the hydrolysis and condensation of tetraethyl orthotitanate (TEOT) in aqueous ethanol solutions through the addition of electrolytes are described. The precipitates display great sensitivity to agitation where, above a critical shear rate, agglomerated morphologies are observed. For reactions carried out at shear rates less than the critical value, narrow size distribution, spherical titania particles are formed under conditions where the particles have electrophoretic mobilities greater than 0.2 × 10−8 m2· V−1· s−1 for 0.05M < [TEOT] < 0.2M and 0.15M < H2O < 0.9M. Addition of HCl and NaCl to the precipitation solution increases particle charge and expands the TEOT, H2O concentration ranges where uniform particles are formed.</abstract><cop>Oxford, UK</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1111/j.1151-2916.1992.tb04230.x</doi><tpages>9</tpages></addata></record> |
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| ispartof | Journal of the American Ceramic Society, 1992-06, Vol.75 (6), p.1587-1595 |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | agglomeration alkoxide Chemistry Colloidal state and disperse state electrolytes Exact sciences and technology General and physical chemistry General, apparatus, technics of preparation particle size distribution titania |
| title | Alkoxide-Derived Titania Particles: Use of Electrolytes to Control Size and Agglomeration Levels |
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