This title appears in the Scientific Report :
2011
Please use the identifier:
http://dx.doi.org/10.1039/c1jm10181a in citations.
Please use the identifier: http://hdl.handle.net/2128/7408 in citations.
Highly defective MgO nanosheets from colloidal self-assembly
Highly defective MgO nanosheets from colloidal self-assembly
Highly defective magnesium oxide nanosheets were synthesized using a colloidal synthesis in which magnesium ethoxide was thermally decomposed in high-boiling-point weakly coordinating solvents. The nanosheets were assembled of small nanocrystal building blocks by oriented attachment. This assembly c...
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Personal Name(s): | Bar Sadan, M |
---|---|
Maoz, BM / Tirosh, E / Popov, I / Rosenberg, Y / Markovich, G | |
Contributing Institute: |
Mikrostrukturforschung; PGI-5 |
Published in: | Journal of materials chemistry, 21 (2011) S. 9532 - 9537 |
Imprint: |
London
ChemSoc
2011
|
Physical Description: |
9532 - 9537 |
DOI: |
10.1039/c1jm10181a |
Document Type: |
Journal Article |
Research Program: |
Grundlagen für zukünftige Informationstechnologien Erneuerbare Energien |
Series Title: |
Journal of Materials Chemistry
21 |
Subject (ZB): | |
Link: |
Get full text Published under German "Allianz" Licensing conditions on 2011-06-02. Available in OpenAccess from 2012-06-02 |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/7408 in citations.
Highly defective magnesium oxide nanosheets were synthesized using a colloidal synthesis in which magnesium ethoxide was thermally decomposed in high-boiling-point weakly coordinating solvents. The nanosheets were assembled of small nanocrystal building blocks by oriented attachment. This assembly could be inhibited by using a strongly coordinating surfactant, such as oleic acid. The 2-3 nm spaced extended defects formed at the grain boundaries make up a material with a record defect density which causes an increased conductivity and dielectric constant, strong luminescence and paramagnetism. The point defect type prevailing at those interfaces is apparently charged oxygen vacancies. In situ TEM annealing experiments showed that the extended defects begin to anneal out at temperatures as low as 300 degrees C, but a high density of point defects apparently survives even at 750 degrees C. |