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          Institute: Fritz-Haber-Institut     Collection: Inorganic Chemistry     Display Documents



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ID: 378850.0, Fritz-Haber-Institut / Inorganic Chemistry
Hydrothermal synthesis of microscale boehmite and
gamma nanoleaves alumina
Authors:Liu, Ye; Ma, Ding; Han, Xiuwen; Bao, Xinhe; Frandsen, Wiebke; Wang, Di; Su, Dang Sheng
Language:English
Research Context:HRTEM
Date of Publication (YYYY-MM-DD):2008
Title of Journal:Materials Letters
Volume:62
Issue / Number:8-9
Start Page:1297
End Page:1301
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:Novel uniform single-crystal boehmite leaf-like nanosheets with high anisotropy (with a lateral size of (4.5±0.5 μm)×(9.0±1.0 μm) and a thickness of 60–90 nm) and flower-like superstructures consisting of single-crystal petals were synthesized for the first time by a simple hydrothermal method. After calcination, those boehmite structures can be transformed into single-crystal gamma alumina nanostructures while keeping their morphology. The morphologies and the crystal structures of single-crystal boehmite nanoleaves and flower-like superstructures were characterized by X-ray powder diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy(TEM), and high resolution transmission electron microscopy (HRTEM). The formation mechanism of the nanoleaves and flower-like superstructure is also discussed. The synthesis of uniform single-crystal boehmite and γ-alumina is highly helpful to study various properties of these anisotropic structures.
Free Keywords:Nanomaterials; Morphology control; Electron microscopy; Alumina
External Publication Status:published
Document Type:Article
Communicated by:Robert Schlögl
Affiliations:Fritz-Haber-Institut/Inorganic Chemistry/Microstructure
External Affiliations:State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China
Identifiers:URL:http://dx.doi.org/10.1016/j.matlet.2007.08.067 [only subscribers]
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