Dear Muhammad Azam,
The following publications describe the fabrification of Al2O3 nanoparticles by simple chemical methods:
1-Synthesis of γ Al 2 O 3 nanoparticles by chemical precipitation method
Article in Journal of Central South University of Technology 12(5):536-541 · October 2005
Abstract
Highly pure active γ-Al2O3 nanoparticles were synthesized from aluminum nitrate and ammonium carbonate with a little surfactant by chemical precipitation
method. The factors affecting the synthesis process were studied. The properties of γ-Al2O3 nanoparticles were characterized by DTA, XRD, BET, TEM, laser granularity analysis and impurity content analysis. The results
show that the amorphous precursor Al(OH)3 sols are produced by using 0.1 mol/L Al(NO3)3 · 9H2O and 0.16 mol/L (NH4)2CO3 · H2O reaction solutions, according to the volume ratio 1.33, adding 0.024% (volume fraction) surfactant PEG600, and reacting at 40 °C, 1 000 r/min stirring rate for 15 min. Then, after stabilizing for 24 h, the precursors were extracted and filtrated by vacuum, washed thoroughly with deionized water and dehydrated ethanol, dried in vacuum at 80°C for 8 h, final calcined at 800 °C for 1 h in the air, and high purity active γ-Al2O3 nanoparticles can be prepared with cubic in crystal system, O H 7 -FD3M in space group, about 9 nm in crystal grain size, about 20 nm in particle size and uniform size distribution, 131. 35 m2/g in BET specific surface area, 7 – 11 nm in pore diameter, and not lower than 99.93% in purity.
https://www.researchgate.net/publication/248132362_Synthesis_of_g_Al_2_O_3_nanoparticles_by_chemical_precipitation_method
2-Synthesis of Aluminum and Titanium Oxides Nanoparticles via Sol-Gel Method: Optimization for the Minimum Size
F. Kamil1, K.A. Hubiter 1, T.K. Abed 2, A.A. Al-Amiery2
Journal of Nanoscience and Technology 2(1) (2016) 37–39
A B S T R A C T
Al2O3 and TiO2 nanoparticles were synthesized using sol-gel method. The structures of Al2O3 and TiO2 nanoparticles were investigated using X-ray diffraction (XRD) study. The morphology of nanoparticles was investigated by scanning electron microscopy (SEM) analysis. The FE-SEM images showed that most
of the nanoparticles obtained for Al2O3 and TiO2 nanoparticles have spherical shape with a particle size of 14 nm and 43 nm for Al2O3 and TiO2 nanoparticles respectively. The absorption spectra of Al2O3 and TiO2 nanoparticles suspended in deionized water were recorded at room temperature using UV-visible spectroscopy. The absorption spectra show a strong peak at 344 nm and 483 nm for Al2O3 and TiO2 respectively. The results on absorption spectra are in good agreement with those investigated by XRD which confirmed the formation of Al2O3 and TiO2.
http://jacsdirectory.com/journal-of-nanoscience-and-technology/admin/issues/20151129121538_2-1-02%20JNST15017%20published.pdf
3-A Review of Methods for Synthesis of Al Nanoparticles
Volume 30, Number 4
Hamid Reza Ghorbani
DOI : http://dx.doi.org/10.13005/ojc/300456
ABSTRACT:The synthesis of metallic nanoparticles is an active area of academic and, more significantly, applied research in nanotechnology. Several methods have been introduced for the synthesis of these materials. The techniques for synthesizing aluminum nanoparticles can be divided into solid-phase, liquid-phase and gas-phase processes. The solid-phase techniques include mechanical ball milling and mechanochemical, the liquid-phase techniques include laser ablation, exploding wire, solution reduction, and decomposition process, whereas the gas-phase processes include gas evaporation, exploding wire, and laser ablation process. This study is an attempt to present an overview of Al nanoparticles preparation by various methods.
http://www.orientjchem.org/vol30no4/a-review-of-methods-for-synthesis-of-al-nanoparticles/
Hoping this will be helpful,
Rafik
Article Synthesis of γ Al 2 O 3 nanoparticles by chemical precipitation method
Dear Muhammad Azam,
The following publications describe the fabrification of Al2O3 nanoparticles by simple chemical methods:
1-Synthesis of γ Al 2 O 3 nanoparticles by chemical precipitation method
Article in Journal of Central South University of Technology 12(5):536-541 · October 2005
Abstract
Highly pure active γ-Al2O3 nanoparticles were synthesized from aluminum nitrate and ammonium carbonate with a little surfactant by chemical precipitation
method. The factors affecting the synthesis process were studied. The properties of γ-Al2O3 nanoparticles were characterized by DTA, XRD, BET, TEM, laser granularity analysis and impurity content analysis. The results
show that the amorphous precursor Al(OH)3 sols are produced by using 0.1 mol/L Al(NO3)3 · 9H2O and 0.16 mol/L (NH4)2CO3 · H2O reaction solutions, according to the volume ratio 1.33, adding 0.024% (volume fraction) surfactant PEG600, and reacting at 40 °C, 1 000 r/min stirring rate for 15 min. Then, after stabilizing for 24 h, the precursors were extracted and filtrated by vacuum, washed thoroughly with deionized water and dehydrated ethanol, dried in vacuum at 80°C for 8 h, final calcined at 800 °C for 1 h in the air, and high purity active γ-Al2O3 nanoparticles can be prepared with cubic in crystal system, O H 7 -FD3M in space group, about 9 nm in crystal grain size, about 20 nm in particle size and uniform size distribution, 131. 35 m2/g in BET specific surface area, 7 – 11 nm in pore diameter, and not lower than 99.93% in purity.
https://www.researchgate.net/publication/248132362_Synthesis_of_g_Al_2_O_3_nanoparticles_by_chemical_precipitation_method
2-Synthesis of Aluminum and Titanium Oxides Nanoparticles via Sol-Gel Method: Optimization for the Minimum Size
F. Kamil1, K.A. Hubiter 1, T.K. Abed 2, A.A. Al-Amiery2
Journal of Nanoscience and Technology 2(1) (2016) 37–39
A B S T R A C T
Al2O3 and TiO2 nanoparticles were synthesized using sol-gel method. The structures of Al2O3 and TiO2 nanoparticles were investigated using X-ray diffraction (XRD) study. The morphology of nanoparticles was investigated by scanning electron microscopy (SEM) analysis. The FE-SEM images showed that most
of the nanoparticles obtained for Al2O3 and TiO2 nanoparticles have spherical shape with a particle size of 14 nm and 43 nm for Al2O3 and TiO2 nanoparticles respectively. The absorption spectra of Al2O3 and TiO2 nanoparticles suspended in deionized water were recorded at room temperature using UV-visible spectroscopy. The absorption spectra show a strong peak at 344 nm and 483 nm for Al2O3 and TiO2 respectively. The results on absorption spectra are in good agreement with those investigated by XRD which confirmed the formation of Al2O3 and TiO2.
http://jacsdirectory.com/journal-of-nanoscience-and-technology/admin/issues/20151129121538_2-1-02%20JNST15017%20published.pdf
3-A Review of Methods for Synthesis of Al Nanoparticles
Volume 30, Number 4
Hamid Reza Ghorbani
DOI : http://dx.doi.org/10.13005/ojc/300456
ABSTRACT:The synthesis of metallic nanoparticles is an active area of academic and, more significantly, applied research in nanotechnology. Several methods have been introduced for the synthesis of these materials. The techniques for synthesizing aluminum nanoparticles can be divided into solid-phase, liquid-phase and gas-phase processes. The solid-phase techniques include mechanical ball milling and mechanochemical, the liquid-phase techniques include laser ablation, exploding wire, solution reduction, and decomposition process, whereas the gas-phase processes include gas evaporation, exploding wire, and laser ablation process. This study is an attempt to present an overview of Al nanoparticles preparation by various methods.
http://www.orientjchem.org/vol30no4/a-review-of-methods-for-synthesis-of-al-nanoparticles/
Hoping this will be helpful,
Rafik
Article Synthesis of γ Al 2 O 3 nanoparticles by chemical precipitation method
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