Preparation and characterization of silica–gold core–shell nanoparticles
Silica–gold core–shell nanoparticles (NPs) were prepared by gold ion plating on hydrophilic-functionalized silica core NPs using formaldehyde as a reducing reagent. The monodisperse silica particles were first prepared by a sol–gel method, while the ultrafine gold colloids (diameter 1–2 nm) were syn...
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| Veröffentlicht in: | Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology 2013-11, Vol.15 (11), p.1-9, Article 2091 |
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| creator | Nghiem, Thi Ha Lien Le, Tuyet Ngan Do, Thi Hue Vu, Thi Thuy Duong Do, Quang Hoa Tran, Hong Nhung |
| description | Silica–gold core–shell nanoparticles (NPs) were prepared by gold ion plating on hydrophilic-functionalized silica core NPs using formaldehyde as a reducing reagent. The monodisperse silica particles were first prepared by a sol–gel method, while the ultrafine gold colloids (diameter 1–2 nm) were synthesized by the reduction of chloroauric acid with tetrakis(hydroxymethyl)phosphonium chloride. The growth and attachment of the gold NPs onto the functionalized surface of the silica NPs with average diameter ranging from 40 to 180 nm, using a low-temperature-mediated route, were systematically investigated. The coverage of the gold NPs and clusters on the surface of the silica NPs have been evaluated by means of UV–Vis/near-infrared spectroscopy and transmission electron microscopy. The surface plasmon resonance absorption spectra from 550 to 1,000 nm of the core–shell NPs can be effectively controlled by the surface gold coverage or the silica core NP’s size. |
| doi_str_mv | 10.1007/s11051-013-2091-6 |
| format | Article |
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The monodisperse silica particles were first prepared by a sol–gel method, while the ultrafine gold colloids (diameter 1–2 nm) were synthesized by the reduction of chloroauric acid with tetrakis(hydroxymethyl)phosphonium chloride. The growth and attachment of the gold NPs onto the functionalized surface of the silica NPs with average diameter ranging from 40 to 180 nm, using a low-temperature-mediated route, were systematically investigated. The coverage of the gold NPs and clusters on the surface of the silica NPs have been evaluated by means of UV–Vis/near-infrared spectroscopy and transmission electron microscopy. The surface plasmon resonance absorption spectra from 550 to 1,000 nm of the core–shell NPs can be effectively controlled by the surface gold coverage or the silica core NP’s size.</description><identifier>ISSN: 1388-0764</identifier><identifier>EISSN: 1572-896X</identifier><identifier>DOI: 10.1007/s11051-013-2091-6</identifier><language>eng</language><publisher>Dordrecht: Springer Netherlands</publisher><subject>Characterization and Evaluation of Materials ; Chemistry and Materials Science ; Chlorides ; Condensed matter: electronic structure, electrical, magnetic, and optical properties ; Cross-disciplinary physics: materials science; rheology ; Exact sciences and technology ; Fullerenes and related materials ; Infrared spectroscopy ; Inorganic Chemistry ; Lasers ; Low temperature ; Materials Science ; Methods of nanofabrication ; Nanocrystalline materials ; Nanoparticles ; Nanoscale materials and structures: fabrication and characterization ; Nanotechnology ; Optical Devices ; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation ; Optics ; Photonics ; Physical Chemistry ; Physics ; Research Paper ; Silica ; Visible and ultraviolet spectra</subject><ispartof>Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology, 2013-11, Vol.15 (11), p.1-9, Article 2091</ispartof><rights>Springer Science+Business Media Dordrecht 2013</rights><rights>2015 INIST-CNRS</rights><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c445t-95ef66c5541a8071eefa3f5797924debdc5fad777e8802fad190a46eb8bfecc43</citedby><cites>FETCH-LOGICAL-c445t-95ef66c5541a8071eefa3f5797924debdc5fad777e8802fad190a46eb8bfecc43</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11051-013-2091-6$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11051-013-2091-6$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27903,27904,41467,42536,51297</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=28050530$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Nghiem, Thi Ha Lien</creatorcontrib><creatorcontrib>Le, Tuyet Ngan</creatorcontrib><creatorcontrib>Do, Thi Hue</creatorcontrib><creatorcontrib>Vu, Thi Thuy Duong</creatorcontrib><creatorcontrib>Do, Quang Hoa</creatorcontrib><creatorcontrib>Tran, Hong Nhung</creatorcontrib><title>Preparation and characterization of silica–gold core–shell nanoparticles</title><title>Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology</title><addtitle>J Nanopart Res</addtitle><description>Silica–gold core–shell nanoparticles (NPs) were prepared by gold ion plating on hydrophilic-functionalized silica core NPs using formaldehyde as a reducing reagent. The monodisperse silica particles were first prepared by a sol–gel method, while the ultrafine gold colloids (diameter 1–2 nm) were synthesized by the reduction of chloroauric acid with tetrakis(hydroxymethyl)phosphonium chloride. The growth and attachment of the gold NPs onto the functionalized surface of the silica NPs with average diameter ranging from 40 to 180 nm, using a low-temperature-mediated route, were systematically investigated. The coverage of the gold NPs and clusters on the surface of the silica NPs have been evaluated by means of UV–Vis/near-infrared spectroscopy and transmission electron microscopy. The surface plasmon resonance absorption spectra from 550 to 1,000 nm of the core–shell NPs can be effectively controlled by the surface gold coverage or the silica core NP’s size.</description><subject>Characterization and Evaluation of Materials</subject><subject>Chemistry and Materials Science</subject><subject>Chlorides</subject><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Exact sciences and technology</subject><subject>Fullerenes and related materials</subject><subject>Infrared spectroscopy</subject><subject>Inorganic Chemistry</subject><subject>Lasers</subject><subject>Low temperature</subject><subject>Materials Science</subject><subject>Methods of nanofabrication</subject><subject>Nanocrystalline materials</subject><subject>Nanoparticles</subject><subject>Nanoscale materials and structures: fabrication and 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Res</stitle><date>2013-11-01</date><risdate>2013</risdate><volume>15</volume><issue>11</issue><spage>1</spage><epage>9</epage><pages>1-9</pages><artnum>2091</artnum><issn>1388-0764</issn><eissn>1572-896X</eissn><abstract>Silica–gold core–shell nanoparticles (NPs) were prepared by gold ion plating on hydrophilic-functionalized silica core NPs using formaldehyde as a reducing reagent. The monodisperse silica particles were first prepared by a sol–gel method, while the ultrafine gold colloids (diameter 1–2 nm) were synthesized by the reduction of chloroauric acid with tetrakis(hydroxymethyl)phosphonium chloride. The growth and attachment of the gold NPs onto the functionalized surface of the silica NPs with average diameter ranging from 40 to 180 nm, using a low-temperature-mediated route, were systematically investigated. The coverage of the gold NPs and clusters on the surface of the silica NPs have been evaluated by means of UV–Vis/near-infrared spectroscopy and transmission electron microscopy. The surface plasmon resonance absorption spectra from 550 to 1,000 nm of the core–shell NPs can be effectively controlled by the surface gold coverage or the silica core NP’s size.</abstract><cop>Dordrecht</cop><pub>Springer Netherlands</pub><doi>10.1007/s11051-013-2091-6</doi><tpages>9</tpages></addata></record> |
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| ispartof | Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology, 2013-11, Vol.15 (11), p.1-9, Article 2091 |
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| subjects | Characterization and Evaluation of Materials Chemistry and Materials Science Chlorides Condensed matter: electronic structure, electrical, magnetic, and optical properties Cross-disciplinary physics: materials science rheology Exact sciences and technology Fullerenes and related materials Infrared spectroscopy Inorganic Chemistry Lasers Low temperature Materials Science Methods of nanofabrication Nanocrystalline materials Nanoparticles Nanoscale materials and structures: fabrication and characterization Nanotechnology Optical Devices Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Optics Photonics Physical Chemistry Physics Research Paper Silica Visible and ultraviolet spectra |
| title | Preparation and characterization of silica–gold core–shell nanoparticles |
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