title: Large-scale synthesis of hierarchical flowerlike boehmite architectures.
abstract: Three-dimensional flowerlike boehmite architectures were synthesized on a large scale via a surfactant-assisted hydrothermal method. The XRD pattern showed that the AlOOH was fully crystallized and exhibited an orthorhombic phase. SEM and TEM images indicated that the flowerlike AlOOH architectures, consisting of nanosheets of 50 nm in thickness, were 550-800 nm in diameters and 1 μm in lengths. SAED pattern revealed that the flowerlike AlOOH was polycrystalline. Nitrogen adsorption/desorption measurement indicated that hierarchical AlOOH architectures had Brunauer-Emmett-Teller (BET) surface area of about 70.1 m(2)/g. The effects of reaction times and the surfactant on the morphologies were also investigated. It was found that CTAB played a crucial role. The formation mechanism of the flowerlike AlOOH architectures was proposed and discussed based on the experimental results.
authors.affiliation: Liaoning Key Laboratory for Fabrication and Application of Superfine Inorganic Powders, Dalian Jiaotong University, Dalian 116028, China.
authors.forename: Bing
authors.initials: B
authors.lastname: Xu
authors.forename: Jing
authors.initials: J
authors.lastname: Wang
authors.forename: Hongbo
authors.initials: H
authors.lastname: Yu
authors.forename: Hong
authors.initials: H
authors.lastname: Gao
mesh_terms: D000536:Aluminum Hydroxide / Q000138:chemical synthesis* / Q000737:chemistry*; D000537:Aluminum Oxide / Q000138:chemical synthesis* / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D008968:Molecular Conformation; D016062:Porosity; D013501:Surface-Active Agents / Q000737:chemistry; D013696:Temperature; D013997:Time Factors; D014961:X-Ray Diffraction
chemical_list: D013501:Surface-Active Agents; D000536:Aluminum Hydroxide; C069471:aluminum oxide hydroxide; D000537:Aluminum Oxide