Aluminum Oxide (Al2O3) Powder
CAS Number 1344-28-1
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Aluminum Oxide (Al2O3) Powder, Nanoparticles hydrophilic ~ 18 nm average particle size, >99.5% purity
High purity aluminum oxide (Al2O3) Powders for applications in catalysts, polishing and antibacterial agents, additives, water treatment, fireproof materials, and organic electronics
Aluminum oxide (Al2O3), known as alumina, is one of the most frequent metal oxides used in industry due to its abundance in nature and low-cost production. Alpha (α), Beta (β) and gamma (ƴ) are the most well-known phase modifications of aluminum oxide. In nature, the most commonly occurring phase is α-Al2O3 which is the only thermodynamically stable form of aluminum oxide. α-Al2O3 is most frequently used as an abrasive material, as well as for production of fireproof materials because of its high melting temperature.
Alumina nanoparticles, mainly in α-and γ-forms, have been widely applied in adsorption-based applications because of their interesting properties such as high specific surface area (SSA), mechanical and thermal stability, inertness to most acids and alkalis, good electrical and chemical resistance in both oxidizing and reducing atmospheres up to 1000 °C, electrical insulation, high melting points, as well as being non-toxic and low-cost. γ-Al2O3 is used as a carrier of catalysts and a desiccant in processes of chemical and petrochemical production owing to its high surface area with open porosity and relatively stable over the temperature range of interest for most catalytic reactions. Aluminum oxide nanoparticles can also serve as additives to concrete mixtures, cosmetics, and textile industries. Aluminum oxide nanoparticles have also been used as antibacterial agent for biomedical purposes. Owing to its electrical resistance, aluminum oxide scaffold is beneficial for suppressing charge recombination, preventing moisture penetration, and increasing the thickness of light absorber layer in perovskite solar cells.
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~ 18 nm Particle size 140 m2/g SSA
Mechanical & Thermal stability
stable over a wide temperature range
Preparation of γ-Al2O3 nanoparticles using modified sol-gel method and its use for the adsorption of lead and cadmium ions, J. Alloys Compd., S. Tabesh et al., 730, 441-449 (2018); DOI: 10.1016/j.jallcom.2017.09.246.
Cr3+ doped Al2O3 nanoparticles: Effect of Cr3+ content in intensifying red emission, P. Lewis et al., Curr. Appl. Phys., 32, 71-77 (2021); DOI: 10.1016/j.cap.2021.10.003.
A novel foam formulation by Al2O3/SiO2 nanoparticles for EOR applications: A mechanistic study, H. Rezvani et al., J. Mol. Liq., 304, 112730 (2020); DOI: 10.1016/j.molliq.2020.112730.
Local Charge Injection and Extraction on Surface-Modified Al2O3 Nanoparticles in LDPE, R. Borgani et al., Nano Lett., 16, 5934−5937 (2016); DOI: 10.1021/acs.nanolett.6b0292.
SrTiO3/Al2O3-Graphene Electron Transport Layer for Highly Stable and Efficient Composites-Based Perovskite Solar Cells with 20.6% Efficiency, T. Mahmoudi et al., Adv. Energy Mater., 10 (2), 1903369 (2019); DOI: DOI: 10.1002/aenm.201903369.
Mechanical and wear behavior of AA7075 aluminum matrix composites reinforced by Al2O3 nanoparticles, H. Al-Salihi et al., Nanocomposites, 5 (3), 67-73 (2019); DOI: 10.1080/20550324.2019.1637576.
A Mini Review of Antibacterial Properties of Al2O3 Nanoparticles, S. Gudkoc et al., Nanomaterials, 12, 2635 (2022); DOI: 10.3390/nano12152635.
Nonlinear-optical properties of heterogeneous liquid nanophase composites based on high-energy-gap Al2O3 nanoparticles, Y. Kul'chin et al., Quantum Electron., 38 (2) 154 Î 158 (2008); DOI: 10.1070/QE2008v038n02ABEH013529.
Resolving the puzzle of single-atom silver dispersion on nanosized γ-Al2O3 surface for high catalytic performance, F. Wang et al., Nat. Commun., 11, 529 (2020); DOI: .1038/s41467-019-13937-1.
- High specific surface area γ-Al2O3 nanoparticles synthesized by facile and low-cost co-precipitation method, Z. Gholizadeh et al., Sci. Rep., 13, 6131 (2023); DOI: 10.1038/s41598-023-33266-0.
|Molecular Weight||101.96 g/mol|
|Chemical Name||Aluminum oxide|
|Synonyms||Alumina, Aluminum oxide|
|Classification / Family||2D semiconducting materials, nanomaterials, Solid lighting, metal oxides|
Aluminum oxide (Al2O3) Powders
|Average Particle Size (APS)||~ 18 nm|
|Specific Surface Area (SSA)||140 m2/g|
|Specific Heat Capacity||890 J/kg K|
|True Density||3.9 g/cm3|
|Melting Point||2040 °C (lit.)|
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To the best of our knowledge the information provided here is accurate. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only.