, Volume 99, Issue 1, pp 317-321
Date: 22 Jan 2010

Self-assembly of boehmite nanopetals to form 3D high surface area nanoarchitectures

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A flower-like boehmite nanostructure was prepared through a template-free chemical route by the self-assembly process of nanosize petals 800–1000 nm long, 200–250 nm wide, 20–50 nm thick and having an average crystallite size of about 2.21 nm. X-ray diffraction analysis (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), DTA/TGA analyses and Brunauer–Emmet–Teller (BET-N2) analyses were used in order to characterize the product obtained. XRD results exhibited that the obtained nanostructures composed of pure orthorhombic AlOOH phase. The effects of Cl ions and TEA on the growth of boehmite three-dimensional nanoarchitectures in the presence of \(\mathrm{NO}_{3}^{-}\) ions were investigated. BET analyses of as-prepared material demonstrate that this nanostructure material has a high specific surface area, as high as 123 m2 g−1.