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* Corresponding authors
Nanomatériaux pour les Systèmes Sous Sollicitations Extrêmes (NS3E), UMR 3208 ISL/CNRS/UdS, French-German Research Institute of Saint-Louis, 5, rue du Général Cassagnou, 68300 Saint-Louis, France
E-mail: [email protected]
We report the synthesis of copper hydroxide (Cu(OH)2) and cupric oxide (CuO) nanotubes arrays on a silicon wafer. It is the first time, to tát the authors' knowledge, that Cu(OH)2 and CuO tubes have been synthesized on another substrate kêu ca a copper foil. Monocrystalline Cu(OH)2 tubes were grown, on a homogeneous copper layer previously evaporated on the top of the wafer, by oxidation of this copper layer in two successive alkaline solutions containing Na(OH) and (NH4)2S2O8 each. The first solution is used to tát control the tubes morphology and mật độ trùng lặp từ khóa on the wafer and the second one to tát accelerate the tubes growth. By changing the first solution concentration, lengths between 3.5 μm and 6.6 μm were obtained and a mean external diameter close to tát 100 nm could be reached. For such a low external diameter, the internal diameter was equal to tát 75 nm. An annealing at 200 °C during 1 h under static air leads to tát the dehydration of Cu(OH)2 tubes into CuO ones. The morphology of the tubes before and after annealing is almost identical, so sánh it is possible to tát obtain CuO nanotubes with a mean external diameter around 100 nm. This value is much smaller kêu ca the diameters of several hundred nanometers published up to tát now for CuO tubes. After annealing, the presence of Cu2O, due at least partially to tát a diffusion phenomenon at the interface copper layer/CuO, has been detected.
- Article type
- 10 Sep 2014
- 15 Dec 2014
- First published
- 15 Dec 2014
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RSC Adv., năm ngoái,5, 6061-6070
Author version available
Synthesis of Cu(OH)2 and CuO nanotubes arrays on a silicon wafer
L. Schlur, K. Bonnot and D. Spitzer, RSC Adv., năm ngoái, 5, 6061 DOI: 10.1039/C4RA10155C
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