Formation of zinc silicate in supercritical water followed with in situ synchrotron radiation X-ray diffraction
Phase formation mechanism of a highly practical inorganic phosphor, α-Zn 2SiO 4:Mn 2+ crystal in supercritical water firstly has been investigated in situ with synchrotron radiation X-ray diffraction. Green-emitting α-Zn 2SiO 4:Mn 2+ crystal formed at a reaction time as low as 400 s at temperatures...
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| Veröffentlicht in: | The Journal of supercritical fluids 2009-07, Vol.49 (3), p.351-355 |
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| container_title | The Journal of supercritical fluids |
| container_volume | 49 |
| creator | Takesue, Masafumi Shimoyama, Kenji Shibuki, Kazuaki Suino, Atsuko Hakuta, Yukiya Hayashi, Hiromichi Ohishi, Yasuo Smith, Richard Lee |
| description | Phase formation mechanism of a highly practical inorganic phosphor, α-Zn
2SiO
4:Mn
2+ crystal in supercritical water firstly has been investigated
in situ with synchrotron radiation X-ray diffraction. Green-emitting α-Zn
2SiO
4:Mn
2+ crystal formed at a reaction time as low as 400
s at temperatures close to the critical point of water (374
°C) and at high-pressures of around 0.7
GPa compared with typical conditions (
ca. 1200
°C, 4
h) for conventional solid-state processes. The operating temperatures and pressures are close to industrial conditions for hydrothermal growth of single crystals, suggesting that supercritical water conditions can be used as a low environmental burden method for producing inorganic phosphors. In this study, it was confirmed that the hydrate mineral, hemimorphite (Zn
4(OH)
2Si
2O
7·H
2O) appears with the anhydrous mineral, willemite (α-Zn
2SiO
4) in supercritical water. |
| doi_str_mv | 10.1016/j.supflu.2009.03.007 |
| format | Article |
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2SiO
4:Mn
2+ crystal in supercritical water firstly has been investigated
in situ with synchrotron radiation X-ray diffraction. Green-emitting α-Zn
2SiO
4:Mn
2+ crystal formed at a reaction time as low as 400
s at temperatures close to the critical point of water (374
°C) and at high-pressures of around 0.7
GPa compared with typical conditions (
ca. 1200
°C, 4
h) for conventional solid-state processes. The operating temperatures and pressures are close to industrial conditions for hydrothermal growth of single crystals, suggesting that supercritical water conditions can be used as a low environmental burden method for producing inorganic phosphors. In this study, it was confirmed that the hydrate mineral, hemimorphite (Zn
4(OH)
2Si
2O
7·H
2O) appears with the anhydrous mineral, willemite (α-Zn
2SiO
4) in supercritical water.</description><identifier>ISSN: 0896-8446</identifier><identifier>EISSN: 1872-8162</identifier><identifier>DOI: 10.1016/j.supflu.2009.03.007</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Crystal growth ; Hydrothermal reaction ; Low temperature synthesis ; Material processing ; Supercritical water ; Willemite ; Zinc silicate</subject><ispartof>The Journal of supercritical fluids, 2009-07, Vol.49 (3), p.351-355</ispartof><rights>2009 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c337t-7daeb3c83e86dd97661a6048828d470a78171d87cef2f892f4043644b299e9383</citedby><cites>FETCH-LOGICAL-c337t-7daeb3c83e86dd97661a6048828d470a78171d87cef2f892f4043644b299e9383</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.supflu.2009.03.007$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Takesue, Masafumi</creatorcontrib><creatorcontrib>Shimoyama, Kenji</creatorcontrib><creatorcontrib>Shibuki, Kazuaki</creatorcontrib><creatorcontrib>Suino, Atsuko</creatorcontrib><creatorcontrib>Hakuta, Yukiya</creatorcontrib><creatorcontrib>Hayashi, Hiromichi</creatorcontrib><creatorcontrib>Ohishi, Yasuo</creatorcontrib><creatorcontrib>Smith, Richard Lee</creatorcontrib><title>Formation of zinc silicate in supercritical water followed with in situ synchrotron radiation X-ray diffraction</title><title>The Journal of supercritical fluids</title><description>Phase formation mechanism of a highly practical inorganic phosphor, α-Zn
2SiO
4:Mn
2+ crystal in supercritical water firstly has been investigated
in situ with synchrotron radiation X-ray diffraction. Green-emitting α-Zn
2SiO
4:Mn
2+ crystal formed at a reaction time as low as 400
s at temperatures close to the critical point of water (374
°C) and at high-pressures of around 0.7
GPa compared with typical conditions (
ca. 1200
°C, 4
h) for conventional solid-state processes. The operating temperatures and pressures are close to industrial conditions for hydrothermal growth of single crystals, suggesting that supercritical water conditions can be used as a low environmental burden method for producing inorganic phosphors. In this study, it was confirmed that the hydrate mineral, hemimorphite (Zn
4(OH)
2Si
2O
7·H
2O) appears with the anhydrous mineral, willemite (α-Zn
2SiO
4) in supercritical water.</description><subject>Crystal growth</subject><subject>Hydrothermal reaction</subject><subject>Low temperature synthesis</subject><subject>Material processing</subject><subject>Supercritical water</subject><subject>Willemite</subject><subject>Zinc silicate</subject><issn>0896-8446</issn><issn>1872-8162</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><recordid>eNp9kE1rGzEURUVpoa7bf9CFVt3N5GkkS5pNoJjmAwLZJNCdUKQnLDMeOZKmxv31HXeyzurB5d4D7xDynUHLgMmrfVumYximtgPoW-AtgPpAVkyrrtFMdh_JCnQvGy2E_Ey-lLIHgA0wviLpJuWDrTGNNAX6N46OljhEZyvSONKZi9nlWOdkoKc5zTSkYUgn9PQU6-5_KdaJlvPodjnVPJOy9XFh_m6yPVMfQ8jWXZKv5FOwQ8Fvb3dNnm9-PW3vmofH2_vtz4fGca5qo7zFF-40Ry2975WUzEoQWnfaCwVWaaaY18ph6ILuuyBAcCnES9f32HPN1-THwj3m9DphqeYQi8NhsCOmqRgu1IbpDuaiWIoup1IyBnPM8WDz2TAwF7tmbxa75mLXADez3Xl2vcxwfuJPxGyKizg69DGjq8an-D7gH8VLh1s</recordid><startdate>20090701</startdate><enddate>20090701</enddate><creator>Takesue, Masafumi</creator><creator>Shimoyama, Kenji</creator><creator>Shibuki, Kazuaki</creator><creator>Suino, Atsuko</creator><creator>Hakuta, Yukiya</creator><creator>Hayashi, Hiromichi</creator><creator>Ohishi, Yasuo</creator><creator>Smith, Richard Lee</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>20090701</creationdate><title>Formation of zinc silicate in supercritical water followed with in situ synchrotron radiation X-ray diffraction</title><author>Takesue, Masafumi ; Shimoyama, Kenji ; Shibuki, Kazuaki ; Suino, Atsuko ; Hakuta, Yukiya ; Hayashi, Hiromichi ; Ohishi, Yasuo ; Smith, Richard Lee</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c337t-7daeb3c83e86dd97661a6048828d470a78171d87cef2f892f4043644b299e9383</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><topic>Crystal growth</topic><topic>Hydrothermal reaction</topic><topic>Low temperature synthesis</topic><topic>Material processing</topic><topic>Supercritical water</topic><topic>Willemite</topic><topic>Zinc silicate</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Takesue, Masafumi</creatorcontrib><creatorcontrib>Shimoyama, Kenji</creatorcontrib><creatorcontrib>Shibuki, Kazuaki</creatorcontrib><creatorcontrib>Suino, Atsuko</creatorcontrib><creatorcontrib>Hakuta, Yukiya</creatorcontrib><creatorcontrib>Hayashi, Hiromichi</creatorcontrib><creatorcontrib>Ohishi, Yasuo</creatorcontrib><creatorcontrib>Smith, Richard Lee</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>The Journal of supercritical fluids</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Takesue, Masafumi</au><au>Shimoyama, Kenji</au><au>Shibuki, Kazuaki</au><au>Suino, Atsuko</au><au>Hakuta, Yukiya</au><au>Hayashi, Hiromichi</au><au>Ohishi, Yasuo</au><au>Smith, Richard Lee</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Formation of zinc silicate in supercritical water followed with in situ synchrotron radiation X-ray diffraction</atitle><jtitle>The Journal of supercritical fluids</jtitle><date>2009-07-01</date><risdate>2009</risdate><volume>49</volume><issue>3</issue><spage>351</spage><epage>355</epage><pages>351-355</pages><issn>0896-8446</issn><eissn>1872-8162</eissn><abstract>Phase formation mechanism of a highly practical inorganic phosphor, α-Zn
2SiO
4:Mn
2+ crystal in supercritical water firstly has been investigated
in situ with synchrotron radiation X-ray diffraction. Green-emitting α-Zn
2SiO
4:Mn
2+ crystal formed at a reaction time as low as 400
s at temperatures close to the critical point of water (374
°C) and at high-pressures of around 0.7
GPa compared with typical conditions (
ca. 1200
°C, 4
h) for conventional solid-state processes. The operating temperatures and pressures are close to industrial conditions for hydrothermal growth of single crystals, suggesting that supercritical water conditions can be used as a low environmental burden method for producing inorganic phosphors. In this study, it was confirmed that the hydrate mineral, hemimorphite (Zn
4(OH)
2Si
2O
7·H
2O) appears with the anhydrous mineral, willemite (α-Zn
2SiO
4) in supercritical water.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.supflu.2009.03.007</doi><tpages>5</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0896-8446 |
| ispartof | The Journal of supercritical fluids, 2009-07, Vol.49 (3), p.351-355 |
| issn | 0896-8446 1872-8162 |
| language | eng |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Crystal growth Hydrothermal reaction Low temperature synthesis Material processing Supercritical water Willemite Zinc silicate |
| title | Formation of zinc silicate in supercritical water followed with in situ synchrotron radiation X-ray diffraction |
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