Effect of Polyelectrolyte Dispersants on the Preparation of Silica-Coated Zinc Oxide Particles in Aqueous Media
Sodium silicate was utilized to obtain a SiO2 coating on ZnO particles to prevent a photocatalytic reaction between ZnO and phenol. During the coating process, pH control is important to avoid dissolution of the ZnO as well as to obtain a good dispersion. Two kinds of polyelectrolyte dispersants wer...
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| Veröffentlicht in: | Journal of the American Ceramic Society 2002-08, Vol.85 (8), p.1937-1940 |
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| container_end_page | 1940 |
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| container_issue | 8 |
| container_start_page | 1937 |
| container_title | Journal of the American Ceramic Society |
| container_volume | 85 |
| creator | Wang, Hongzhi Nakamura, Hiroyuki Yao, Ken Uehara, Masato Nishimura, Satoshi Maeda, Hideaki Abe, Eiichi |
| description | Sodium silicate was utilized to obtain a SiO2 coating on ZnO particles to prevent a photocatalytic reaction between ZnO and phenol. During the coating process, pH control is important to avoid dissolution of the ZnO as well as to obtain a good dispersion. Two kinds of polyelectrolyte dispersants were used to control the surface charge of the ZnO particles in aqueous media. As a result, poly(ethylenimine) (PEI) shifted the isoelectric point of ZnO from pH 9 to pH 10, whereas poly(ammonium acrylate) (PAA) made the surface charge of ZnO negative between pH 6 and pH 11. The change in the ZnO surface charge produced by adding polyelectrolyte dispersants makes it possible to obtain uniform silica–coated ZnO particle in aqueous media. UV–irradiation experiments showed that PEI, which can make the surface charge opposite to that of SiO2, is more effective in obtaining a thick silica coating on ZnO. |
| doi_str_mv | 10.1111/j.1151-2916.2002.tb00384.x |
| format | Article |
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During the coating process, pH control is important to avoid dissolution of the ZnO as well as to obtain a good dispersion. Two kinds of polyelectrolyte dispersants were used to control the surface charge of the ZnO particles in aqueous media. As a result, poly(ethylenimine) (PEI) shifted the isoelectric point of ZnO from pH 9 to pH 10, whereas poly(ammonium acrylate) (PAA) made the surface charge of ZnO negative between pH 6 and pH 11. The change in the ZnO surface charge produced by adding polyelectrolyte dispersants makes it possible to obtain uniform silica–coated ZnO particle in aqueous media. UV–irradiation experiments showed that PEI, which can make the surface charge opposite to that of SiO2, is more effective in obtaining a thick silica coating on ZnO.</description><identifier>ISSN: 0002-7820</identifier><identifier>EISSN: 1551-2916</identifier><identifier>DOI: 10.1111/j.1151-2916.2002.tb00384.x</identifier><identifier>CODEN: JACTAW</identifier><language>eng</language><publisher>Westerville, Ohio: American Ceramics Society</publisher><subject>Chemistry ; Colloidal state and disperse state ; Cross-disciplinary physics: materials science; rheology ; dispersants/dispersion ; Exact sciences and technology ; General and physical chemistry ; Liquid phase epitaxy; deposition from liquid phases (melts, solutions, and surface layers on liquids) ; Materials science ; Methods of deposition of films and coatings; film growth and epitaxy ; Physics ; Powders ; silica ; zinc oxide</subject><ispartof>Journal of the American Ceramic Society, 2002-08, Vol.85 (8), p.1937-1940</ispartof><rights>2002 INIST-CNRS</rights><rights>Copyright American Ceramic Society Aug 2002</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c5107-b037e3d901437954ed1dfe7189ebcaa29e1aa9976608830b5fe408a53d344b3a3</citedby><cites>FETCH-LOGICAL-c5107-b037e3d901437954ed1dfe7189ebcaa29e1aa9976608830b5fe408a53d344b3a3</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.1151-2916.2002.tb00384.x$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1111%2Fj.1151-2916.2002.tb00384.x$$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=13844083$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Wang, Hongzhi</creatorcontrib><creatorcontrib>Nakamura, Hiroyuki</creatorcontrib><creatorcontrib>Yao, Ken</creatorcontrib><creatorcontrib>Uehara, Masato</creatorcontrib><creatorcontrib>Nishimura, Satoshi</creatorcontrib><creatorcontrib>Maeda, Hideaki</creatorcontrib><creatorcontrib>Abe, Eiichi</creatorcontrib><title>Effect of Polyelectrolyte Dispersants on the Preparation of Silica-Coated Zinc Oxide Particles in Aqueous Media</title><title>Journal of the American Ceramic Society</title><description>Sodium silicate was utilized to obtain a SiO2 coating on ZnO particles to prevent a photocatalytic reaction between ZnO and phenol. During the coating process, pH control is important to avoid dissolution of the ZnO as well as to obtain a good dispersion. Two kinds of polyelectrolyte dispersants were used to control the surface charge of the ZnO particles in aqueous media. As a result, poly(ethylenimine) (PEI) shifted the isoelectric point of ZnO from pH 9 to pH 10, whereas poly(ammonium acrylate) (PAA) made the surface charge of ZnO negative between pH 6 and pH 11. The change in the ZnO surface charge produced by adding polyelectrolyte dispersants makes it possible to obtain uniform silica–coated ZnO particle in aqueous media. UV–irradiation experiments showed that PEI, which can make the surface charge opposite to that of SiO2, is more effective in obtaining a thick silica coating on ZnO.</description><subject>Chemistry</subject><subject>Colloidal state and disperse state</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>dispersants/dispersion</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Liquid phase epitaxy; deposition from liquid phases (melts, solutions, and surface layers on liquids)</subject><subject>Materials science</subject><subject>Methods of deposition of films and coatings; film growth and epitaxy</subject><subject>Physics</subject><subject>Powders</subject><subject>silica</subject><subject>zinc oxide</subject><issn>0002-7820</issn><issn>1551-2916</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><recordid>eNqVkU2P0zAQhi0EEmXhP1grwS3FjpM45kTplgJadov4krhYE2ciXLxxsV3R_nsctQKJG76MR_PMO6N5CbnkbM7ze77NoeZFqXgzLxkr56ljTLTV_HCPzHh9Lt0nM5aLhWxL9pA8inGbU67aakb8ahjQJOoHuvHuiC4nIX8S0isbdxgijClSP9L0Hekm4A4CJJvz3PHROmugWHpI2NNvdjT09mD7zEFI1jiM1I508XOPfh_pe-wtPCYPBnARn5zjBfn8evVp-aa4vl2_XS6uC1NzJouOCYmiV4xXQqq6wp73A0reKuwMQKmQAyglm4a1rWBdPWDFWqhFL6qqEyAuyLOT7i74PD8mfWejQedgnJbRpeSi5rLO4OU_4Nbvw5h30yWXSijWtBl6cYJM8DEGHPQu2DsIR82ZnozQWz0Zoadr68kIfTZCH3Lz0_MEiAbcEGA0Nv5VyFTeXWTu5Yn7ZR0e_2OCfrdYrrgSMksUJwkbEx7-SED4oRspZK2_3qz1Zv3h5otUUr8SvwHB2Kxf</recordid><startdate>200208</startdate><enddate>200208</enddate><creator>Wang, Hongzhi</creator><creator>Nakamura, Hiroyuki</creator><creator>Yao, Ken</creator><creator>Uehara, Masato</creator><creator>Nishimura, Satoshi</creator><creator>Maeda, Hideaki</creator><creator>Abe, Eiichi</creator><general>American Ceramics Society</general><general>Blackwell</general><general>Wiley Subscription Services, Inc</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>200208</creationdate><title>Effect of Polyelectrolyte Dispersants on the Preparation of Silica-Coated Zinc Oxide Particles in Aqueous Media</title><author>Wang, Hongzhi ; Nakamura, Hiroyuki ; Yao, Ken ; Uehara, Masato ; Nishimura, Satoshi ; Maeda, Hideaki ; Abe, Eiichi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c5107-b037e3d901437954ed1dfe7189ebcaa29e1aa9976608830b5fe408a53d344b3a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2002</creationdate><topic>Chemistry</topic><topic>Colloidal state and disperse state</topic><topic>Cross-disciplinary physics: materials science; rheology</topic><topic>dispersants/dispersion</topic><topic>Exact sciences and technology</topic><topic>General and physical chemistry</topic><topic>Liquid phase epitaxy; deposition from liquid phases (melts, solutions, and surface layers on liquids)</topic><topic>Materials science</topic><topic>Methods of deposition of films and coatings; film growth and epitaxy</topic><topic>Physics</topic><topic>Powders</topic><topic>silica</topic><topic>zinc oxide</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Hongzhi</creatorcontrib><creatorcontrib>Nakamura, Hiroyuki</creatorcontrib><creatorcontrib>Yao, Ken</creatorcontrib><creatorcontrib>Uehara, Masato</creatorcontrib><creatorcontrib>Nishimura, Satoshi</creatorcontrib><creatorcontrib>Maeda, Hideaki</creatorcontrib><creatorcontrib>Abe, Eiichi</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of the American Ceramic Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Hongzhi</au><au>Nakamura, Hiroyuki</au><au>Yao, Ken</au><au>Uehara, Masato</au><au>Nishimura, Satoshi</au><au>Maeda, Hideaki</au><au>Abe, Eiichi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of Polyelectrolyte Dispersants on the Preparation of Silica-Coated Zinc Oxide Particles in Aqueous Media</atitle><jtitle>Journal of the American Ceramic Society</jtitle><date>2002-08</date><risdate>2002</risdate><volume>85</volume><issue>8</issue><spage>1937</spage><epage>1940</epage><pages>1937-1940</pages><issn>0002-7820</issn><eissn>1551-2916</eissn><coden>JACTAW</coden><abstract>Sodium silicate was utilized to obtain a SiO2 coating on ZnO particles to prevent a photocatalytic reaction between ZnO and phenol. During the coating process, pH control is important to avoid dissolution of the ZnO as well as to obtain a good dispersion. Two kinds of polyelectrolyte dispersants were used to control the surface charge of the ZnO particles in aqueous media. As a result, poly(ethylenimine) (PEI) shifted the isoelectric point of ZnO from pH 9 to pH 10, whereas poly(ammonium acrylate) (PAA) made the surface charge of ZnO negative between pH 6 and pH 11. The change in the ZnO surface charge produced by adding polyelectrolyte dispersants makes it possible to obtain uniform silica–coated ZnO particle in aqueous media. UV–irradiation experiments showed that PEI, which can make the surface charge opposite to that of SiO2, is more effective in obtaining a thick silica coating on ZnO.</abstract><cop>Westerville, Ohio</cop><pub>American Ceramics Society</pub><doi>10.1111/j.1151-2916.2002.tb00384.x</doi><tpages>4</tpages></addata></record> |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Chemistry Colloidal state and disperse state Cross-disciplinary physics: materials science rheology dispersants/dispersion Exact sciences and technology General and physical chemistry Liquid phase epitaxy deposition from liquid phases (melts, solutions, and surface layers on liquids) Materials science Methods of deposition of films and coatings film growth and epitaxy Physics Powders silica zinc oxide |
| title | Effect of Polyelectrolyte Dispersants on the Preparation of Silica-Coated Zinc Oxide Particles in Aqueous Media |
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