Hexagonal polytype of CuCrO2 nanocrystals obtained by hydrothermal method

We had first synthesized hexagonal 2H-CuCrO 2 nanocrystals by hydrothermal method. The stability diagram for Cu–Cr–Na–H 2 O system allows preparing of nanocrystalline CuCrO 2 , either 2H or 3R pure phase, by a single step, low-temperature hydrothermal synthesis. 2H- and 3R-CuCrO 2 quasi-hexagonal sh...

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Bibliographic Details
Published inJournal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology Vol. 14; no. 9; p. 1
Main Authors Miclau, M., Ursu, D., Kumar, S., Grozescu, I.
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Netherlands 01.09.2012
Springer Nature B.V
Subjects
Characterization and Evaluation of Materials
Chemistry and Materials Science
Inorganic Chemistry
Lasers
Low temperature
Materials Science
Nanocrystals
Nanoparticles
Nanotechnology
Optical Devices
Optics
Photonics
Physical Chemistry
Research Paper
2H-polytype
Delafossite
Thermoelectric
Hydrothermal
Nanocrystal
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Summary:We had first synthesized hexagonal 2H-CuCrO 2 nanocrystals by hydrothermal method. The stability diagram for Cu–Cr–Na–H 2 O system allows preparing of nanocrystalline CuCrO 2 , either 2H or 3R pure phase, by a single step, low-temperature hydrothermal synthesis. 2H- and 3R-CuCrO 2 quasi-hexagonal shape nanocrystals have shown a wide range of size distribution varying from about 20 to 40 nm. An unexpected result is that 2H-CuCrO 2 phase was a low temperature phase in the hydrothermal synthesis. Also, a formation mechanism for the synthesis of CuCrO 2 nanocrystal, 2H- and 3R-polytypes was proposed.
ISSN:1388-0764
1572-896X
DOI:10.1007/s11051-012-1110-3