Organized Silica Films Generated by Evaporation-Induced Self-Assembly as Hosts for Iron Oxide Nanoparticles
In this work, we prepared oriented mesoporous thin films of silica on various solid substrates using the pluronic block copolymer P123 as a template. We attempted to insert guest iron oxide (Fe O ) nanoparticles into these films by two different methods: (a) by co-precipitation-where iron precursors...
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Veröffentlicht in: | Materials 2013-04, Vol.6 (4), p.1467-1484 |
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creator | Andreou, Ioanna Amenitsch, Heinz Likodimos, Vlassis Falaras, Polycarpos Koutsoukos, Petros G Leontidis, Epameinondas |
description | In this work, we prepared oriented mesoporous thin films of silica on various solid substrates using the pluronic block copolymer P123 as a template. We attempted to insert guest iron oxide (Fe
O
) nanoparticles into these films by two different methods: (a) by co-precipitation-where iron precursors are introduced in the synthesis sol before deposition of the silica film-and subsequent oxide production during the film calcination step; (b) by preparing and calcining the silica films first then impregnating them with the iron precursor, obtaining the iron oxide nanoparticles by a second calcination step. We have examined the structural effects of the guest nanoparticles on the silica film structures using grazing incidence X-ray scattering (GISAXS), high-resolution transmission electron spectroscopy (HRTEM), spectroscopic ellipsometry, X-ray photoelectron spectroscopy (XPS), and Raman microscopy. Formation of nanoparticles by co-precipitation may induce substantial changes in the film structure leading, in our adopted process, to the appearance of lamellar ordering in the calcination stage. On the contrary, impregnation-based approaches perturb the film structures much more weakly, but are also less efficient in filling the pores with nanoparticles. |
doi_str_mv | 10.3390/ma6041467 |
format | Article |
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O
) nanoparticles into these films by two different methods: (a) by co-precipitation-where iron precursors are introduced in the synthesis sol before deposition of the silica film-and subsequent oxide production during the film calcination step; (b) by preparing and calcining the silica films first then impregnating them with the iron precursor, obtaining the iron oxide nanoparticles by a second calcination step. We have examined the structural effects of the guest nanoparticles on the silica film structures using grazing incidence X-ray scattering (GISAXS), high-resolution transmission electron spectroscopy (HRTEM), spectroscopic ellipsometry, X-ray photoelectron spectroscopy (XPS), and Raman microscopy. Formation of nanoparticles by co-precipitation may induce substantial changes in the film structure leading, in our adopted process, to the appearance of lamellar ordering in the calcination stage. On the contrary, impregnation-based approaches perturb the film structures much more weakly, but are also less efficient in filling the pores with nanoparticles.</description><identifier>ISSN: 1996-1944</identifier><identifier>EISSN: 1996-1944</identifier><identifier>DOI: 10.3390/ma6041467</identifier><identifier>PMID: 28809221</identifier><language>eng</language><publisher>Switzerland: MDPI AG</publisher><subject>Chemistry ; Electrons ; Nanoparticles</subject><ispartof>Materials, 2013-04, Vol.6 (4), p.1467-1484</ispartof><rights>Copyright MDPI AG 2013</rights><rights>2013 by the authors. 2013</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c403t-55cf42deb53a10945d268c461bea93376c577de63016b90d8e6d36d01f71e4113</citedby><cites>FETCH-LOGICAL-c403t-55cf42deb53a10945d268c461bea93376c577de63016b90d8e6d36d01f71e4113</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC5452312/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC5452312/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,723,776,780,881,27901,27902,53766,53768</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/28809221$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Andreou, Ioanna</creatorcontrib><creatorcontrib>Amenitsch, Heinz</creatorcontrib><creatorcontrib>Likodimos, Vlassis</creatorcontrib><creatorcontrib>Falaras, Polycarpos</creatorcontrib><creatorcontrib>Koutsoukos, Petros G</creatorcontrib><creatorcontrib>Leontidis, Epameinondas</creatorcontrib><title>Organized Silica Films Generated by Evaporation-Induced Self-Assembly as Hosts for Iron Oxide Nanoparticles</title><title>Materials</title><addtitle>Materials (Basel)</addtitle><description>In this work, we prepared oriented mesoporous thin films of silica on various solid substrates using the pluronic block copolymer P123 as a template. We attempted to insert guest iron oxide (Fe
O
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On the contrary, impregnation-based approaches perturb the film structures much more weakly, but are also less efficient in filling the pores with nanoparticles.</description><subject>Chemistry</subject><subject>Electrons</subject><subject>Nanoparticles</subject><issn>1996-1944</issn><issn>1996-1944</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNpdkU1LHTEUhoO0qFgX_QMl0E27mJrvmWwKIn5cEO-i7TpkkjM2NpPcJjPS6693RHuxPZvz9fByDi9C7yn5wrkmJ6NVRFCh2j10SLVWDdVCvHlVH6DjWu_IEpzTjul9dMC6jmjG6CH6tS63NoUH8PhbiMFZfBHiWPElJCh2Wsb9Fp_f201eupBTs0p-dk80xKE5rRXGPm6xrfgq16niIRe8Kjnh9Z_gAd_YlDe2TMFFqO_Q28HGCscv-Qj9uDj_fnbVXK8vV2en140ThE-NlG4QzEMvuaVEC-mZ6pxQtAerOW-Vk23rQXFCVa-J70B5rjyhQ0tBUMqP0Ndn3c3cj-AdpKnYaDYljLZsTbbB_LtJ4ae5zfdGCsk4ZYvApxeBkn_PUCczhuogRpsgz9VQzTQlSnZ8QT_-h97luaTlPUMl6zSRWomF-vxMuZJrLTDsjqHEPLlodi4u7IfX1-_Iv57xR4iAl24</recordid><startdate>20130409</startdate><enddate>20130409</enddate><creator>Andreou, Ioanna</creator><creator>Amenitsch, Heinz</creator><creator>Likodimos, Vlassis</creator><creator>Falaras, Polycarpos</creator><creator>Koutsoukos, Petros G</creator><creator>Leontidis, Epameinondas</creator><general>MDPI AG</general><general>MDPI</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KB.</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>7X8</scope><scope>5PM</scope></search><sort><creationdate>20130409</creationdate><title>Organized Silica Films Generated by Evaporation-Induced Self-Assembly as Hosts for Iron Oxide Nanoparticles</title><author>Andreou, Ioanna ; 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We attempted to insert guest iron oxide (Fe
O
) nanoparticles into these films by two different methods: (a) by co-precipitation-where iron precursors are introduced in the synthesis sol before deposition of the silica film-and subsequent oxide production during the film calcination step; (b) by preparing and calcining the silica films first then impregnating them with the iron precursor, obtaining the iron oxide nanoparticles by a second calcination step. We have examined the structural effects of the guest nanoparticles on the silica film structures using grazing incidence X-ray scattering (GISAXS), high-resolution transmission electron spectroscopy (HRTEM), spectroscopic ellipsometry, X-ray photoelectron spectroscopy (XPS), and Raman microscopy. Formation of nanoparticles by co-precipitation may induce substantial changes in the film structure leading, in our adopted process, to the appearance of lamellar ordering in the calcination stage. On the contrary, impregnation-based approaches perturb the film structures much more weakly, but are also less efficient in filling the pores with nanoparticles.</abstract><cop>Switzerland</cop><pub>MDPI AG</pub><pmid>28809221</pmid><doi>10.3390/ma6041467</doi><tpages>18</tpages><oa>free_for_read</oa></addata></record> |
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subjects | Chemistry Electrons Nanoparticles |
title | Organized Silica Films Generated by Evaporation-Induced Self-Assembly as Hosts for Iron Oxide Nanoparticles |
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