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231223s2008 xx |||||o 00| ||eng c |
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|a 10.1021/la803008g
|2 doi
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|a pubmed24n0614.xml
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|a (DE-627)NLM184301629
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|a (NLM)18986186
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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 Pol, Vilas G
|e verfasserin
|4 aut
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|a Facile synthesis of novel photoluminescent ZnO micro- and nanopencils
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|c 2008
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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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|2 rdacarrier
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|a Date Completed 23.03.2009
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|a Date Revised 21.11.2013
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|a published: Print
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|a Citation Status MEDLINE
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|a A single-step solvent-, catalyst-, and template-free synthesis process to prepare photoluminescent pencils of ZnO either in micro- or in nanosize diameters from a single precursor is demonstrated. The thermolysis of Zn's acetate dihydrate (ZAD) precursor in a closed stainless steel reactor at 700 degrees C under autogenic pressure (6.5 MPa), yielded carbon sphere-decorated ZnO micropencils (ZnO-M's). The ZnO-M's have novel room-temperature photoluminescence (PL) with well-defined emission peaks at the green, yellow, orange, and red regions of the visible spectra while suppressing the blue region. On the contrary, the thermolysis of ZAD in a closed stainless steel reactor at 700 degrees C with released pressure yielded uniformly carbon-coated ZnO nanopencils (ZN's). The coated carbon in ZN's quenches the complete UV-vis PL; however, after annealing ZN's at 600 degrees C/2 h in air, the UV PL is dominant, and the visible PL is suppressed. The carbon coating (partly or completely) on the one-dimensional (1D) ZnO surfaces plays an important role to modify PL properties. The insight into the reaction mechanism was gained through in situ mass spectrometry measurements. The as-prepared ZnO-M's and ZN's have been systematically characterized to determine their morphology, structure, and composition
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Zinc Oxide
|2 NLM
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|a SOI2LOH54Z
|2 NLM
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|a Calderon-Moreno, Jose M
|e verfasserin
|4 aut
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|a Thiyagarajan, P
|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 24(2008), 23 vom: 02. Dez., Seite 13640-5
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:24
|g year:2008
|g number:23
|g day:02
|g month:12
|g pages:13640-5
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|u http://dx.doi.org/10.1021/la803008g
|3 Volltext
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