Abstract
Micro/nanostructured AlOOH hollow spheres have been obtained via one-step synthesis. Spherical aluminum nanoparticles coated with amorphous oxide film are used as a precursor. Hollow spheres of AlOOH are formed during the oxidation of aluminum nanoparticles with water. In order to study the evolution of hollow spheres, electron microscopy studies of the reaction intermediates at various stages of the process are carried out. Micro/nanostructured AlOOH hollow spheres have a diameter of 500–800 nm, and their shells consist of boehmite nanosheets with a planar size of 200–300 nm and a thickness of 2–10 nm. It is shown that the formation of AlOOH hollow spheres occurs through dissolution of aluminum core, the diffusion of Al3+ ions through the surface oxide film, and the formation of islands of amorphous Al(OH)3 at the particle–water interface. Further, the formation and growth of AlOOH nanosheets and the formation of a porous shell from nanosheets take place. As a result, the oxide film serves as a substrate for growth of boehmite nanosheets and the formation of micro/nanostructured AlOOH hollow sphere. Morphology and physicochemical properties of the hollow spheres are characterized by transmission and scanning electron microscopy, X-ray diffraction, energy-dispersive analysis, and low-temperature nitrogen adsorption.
| Original language | English |
|---|---|
| Pages (from-to) | 858-864 |
| Number of pages | 7 |
| Journal | Nanotechnologies in Russia |
| Volume | 10 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 1 Nov 2015 |
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Keywords
- AlOOH
- hollow spheres
- micro/nanostructures
- nanoparticles
ASJC Scopus subject areas
- Condensed Matter Physics
- Materials Science(all)
- Engineering(all)
Cite this
Formation of micro/nanostructured AlOOH hollow spheres from aluminum nanoparticles. / Lozhkomoev, A. S.; Glazkova, E. A.; Kazantsev, S. O.; Gorbikov, I. A.; Bakina, O. V.; Svarovskaya, Natalia Valentinovna; Miller, A. A.; Lerner, Marat Izrailevich; Psakhie, S. G.
In: Nanotechnologies in Russia, Vol. 10, No. 11, 01.11.2015, p. 858-864.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Formation of micro/nanostructured AlOOH hollow spheres from aluminum nanoparticles
AU - Lozhkomoev, A. S.
AU - Glazkova, E. A.
AU - Kazantsev, S. O.
AU - Gorbikov, I. A.
AU - Bakina, O. V.
AU - Svarovskaya, Natalia Valentinovna
AU - Miller, A. A.
AU - Lerner, Marat Izrailevich
AU - Psakhie, S. G.
PY - 2015/11/1
Y1 - 2015/11/1
N2 - Micro/nanostructured AlOOH hollow spheres have been obtained via one-step synthesis. Spherical aluminum nanoparticles coated with amorphous oxide film are used as a precursor. Hollow spheres of AlOOH are formed during the oxidation of aluminum nanoparticles with water. In order to study the evolution of hollow spheres, electron microscopy studies of the reaction intermediates at various stages of the process are carried out. Micro/nanostructured AlOOH hollow spheres have a diameter of 500–800 nm, and their shells consist of boehmite nanosheets with a planar size of 200–300 nm and a thickness of 2–10 nm. It is shown that the formation of AlOOH hollow spheres occurs through dissolution of aluminum core, the diffusion of Al3+ ions through the surface oxide film, and the formation of islands of amorphous Al(OH)3 at the particle–water interface. Further, the formation and growth of AlOOH nanosheets and the formation of a porous shell from nanosheets take place. As a result, the oxide film serves as a substrate for growth of boehmite nanosheets and the formation of micro/nanostructured AlOOH hollow sphere. Morphology and physicochemical properties of the hollow spheres are characterized by transmission and scanning electron microscopy, X-ray diffraction, energy-dispersive analysis, and low-temperature nitrogen adsorption.
AB - Micro/nanostructured AlOOH hollow spheres have been obtained via one-step synthesis. Spherical aluminum nanoparticles coated with amorphous oxide film are used as a precursor. Hollow spheres of AlOOH are formed during the oxidation of aluminum nanoparticles with water. In order to study the evolution of hollow spheres, electron microscopy studies of the reaction intermediates at various stages of the process are carried out. Micro/nanostructured AlOOH hollow spheres have a diameter of 500–800 nm, and their shells consist of boehmite nanosheets with a planar size of 200–300 nm and a thickness of 2–10 nm. It is shown that the formation of AlOOH hollow spheres occurs through dissolution of aluminum core, the diffusion of Al3+ ions through the surface oxide film, and the formation of islands of amorphous Al(OH)3 at the particle–water interface. Further, the formation and growth of AlOOH nanosheets and the formation of a porous shell from nanosheets take place. As a result, the oxide film serves as a substrate for growth of boehmite nanosheets and the formation of micro/nanostructured AlOOH hollow sphere. Morphology and physicochemical properties of the hollow spheres are characterized by transmission and scanning electron microscopy, X-ray diffraction, energy-dispersive analysis, and low-temperature nitrogen adsorption.
KW - AlOOH
KW - hollow spheres
KW - micro/nanostructures
KW - nanoparticles
UR - http://www.scopus.com/inward/record.url?scp=84948744863&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84948744863&partnerID=8YFLogxK
U2 - 10.1134/S1995078015060075
DO - 10.1134/S1995078015060075
M3 - Article
AN - SCOPUS:84948744863
VL - 10
SP - 858
EP - 864
JO - Nanotechnologies in Russia
JF - Nanotechnologies in Russia
SN - 1995-0780
IS - 11
ER -