Meng-Jie Cui , Imran Muhammad , Jian Feng , Tie-Zhen Ren
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引用次数: 0
Abstract
The crystal and particle size distribution of α-alumina (α-Al2O3) nanoparticles is increasingly important for their potential application. However, it is difficult to produce α-Al2O3 nanoparticles due to the high activation energy barrier making it difficult to obtain a pure α-Al₂O₃. In this paper, α-Al2O3 nanoparticles with an average size of 60 nm in width and about 100–300 nm in length were prepared using isopropanol through thermal treatment at 1200 °C, accompanied by a minor fraction of the θ phase. Addressing the challenge of achieving pure phase α-Al2O3, Density Functional Theory (DFT) calculation was conducted to explore the energy landscape similarity between the θ and α crystal phases. The results provided valuable insights into obstacles associated with obtaining pure α-Al2O3, enlightening the relationship between surface electronegativity and crystal phases. Furthermore, X-ray Photoelectron Spectroscopy and electrochemical tests were employed to demonstrate that the α phase could enhance the surface electronegativity of Al2O3. This comprehensive study not only encompasses the synthesis of Al2O3 nanoparticles but also elucidates the distinctions between α and θ phases. These results offer valuable insights into methods optimizing for the synthesis of pure phase α-Al₂O₃.
期刊介绍:
Solid State Sciences is the journal for researchers from the broad solid state chemistry and physics community. It publishes key articles on all aspects of solid state synthesis, structure-property relationships, theory and functionalities, in relation with experiments.
Key topics for stand-alone papers and special issues:
-Novel ways of synthesis, inorganic functional materials, including porous and glassy materials, hybrid organic-inorganic compounds and nanomaterials
-Physical properties, emphasizing but not limited to the electrical, magnetical and optical features
-Materials related to information technology and energy and environmental sciences.
The journal publishes feature articles from experts in the field upon invitation.
Solid State Sciences - your gateway to energy-related materials.