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231223s2010 xx |||||o 00| ||eng c |
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|a 10.1021/la103504e
|2 doi
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|a DE-627
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Agrawal, Mukesh
|e verfasserin
|4 aut
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| 245 |
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|a Template-assisted fabrication of magnetically responsive hollow titania capsules
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|c 2010
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 04.03.2011
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|a Date Revised 10.11.2010
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a This study reports on the fabrication of magnetically responsive hollow titania capsules by confining the superparamagnetic Fe(3)O(4) nanoparticles within a hollow and porous titania (TiO(2)) shell. The employed protocol involves precipitation of titania shell on the magnetite (Fe(3)O(4)) encapsulated polystyrene beads followed by the calcination of resulting composite particles at elevated temperature. Scanning electron microscopy and transmission electron microscopy reveal the presence of a thick, complete but irregular titania shell on the magnetic polystyrene beads after the templating process. Electron energy loss mapping image analysis has been employed to investigate the spatial distribution of titania and magnetite phases of magnetic hollow titania capsules (MHTCs). Magnetic characterization indicates that both titania-coated magnetic polystyrene beads (TMPBs) and MHTCs are superparamagnetic in nature with the saturated magnetizations of 5.6 and 8.1 emu/g, respectively. X-ray diffraction (XRD) analysis reveals that titania shell of these capsules is composed of photoactive anatase phase. Nitrogen adsorption-desorption analysis has been employed to estimate the specific surface area and the average pore diameter of the fabricated hollow structures. Photocatalytic activity of the fabricated MHTCs for the photodegradation of rhodamine 6G dye has been demonstrated and compared with that of bulk titania nanoparticles
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|a Journal Article
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1 |
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|a Gupta, Smrati
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Pich, Andrij
|e verfasserin
|4 aut
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1 |
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|a Zafeiropoulos, Nikolaos E
|e verfasserin
|4 aut
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|a Rubio-Retama, Jorge
|e verfasserin
|4 aut
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| 700 |
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|a Jehnichen, Dieter
|e verfasserin
|4 aut
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| 700 |
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|a Stamm, Manfred
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 26(2010), 22 vom: 16. Nov., Seite 17649-55
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:26
|g year:2010
|g number:22
|g day:16
|g month:11
|g pages:17649-55
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|u http://dx.doi.org/10.1021/la103504e
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