PEG-directed hydrothermal synthesis of alumina nanorods with mesoporous structure via AACH nanorod precursors

  • Zhenfeng Zhu
  • Hongjun Sun
  • Hui Liu
  • Dong Yang


Al2O3 nanorods with mesoporous structures are successfully synthesized from a hydrothermal and thermal decomposition process via the ammonium aluminum carbonate hydroxide (denoted as AACH) precursors. TEM images show that the average diameter of Al2O3 nanorods is about 60 nm, and the length is around 1–2 μm. The experimental results show that well-crystallized mesopores with hierarchically distributed pore sizes are embedded in the Al2O3 nanorods. The N2 adsorption–desorption experiment indicates that the as-synthesized alumina nanorods have large surface area (ca. 176 m2/g) and narrow pore-size distributions. At the same time, the as-prepared Al2O3 nanorods exhibit strong photoluminescent properties at room temperature. A plausible surfactant-induced nanorod formation mechanism using the poly ethylene glycols as the template agent for the nanorod assembly is also proposed.


Mesoporous Structure Select Area Electron Diffraction Pattern Mesoporous Alumina Weight Loss Event Transition Electron Microscope 
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This study was supported by the National Science Foundation of China (No. 50772064), the Graduate Innovation Fund of Shaanxi University of Science and Technology and China Postdoctoral Science Foundation Founded Project (No. 20080440185).


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© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.School of Materials Science and EngineeringShaanxi University of Science and TechnologyXi’anPeople’s Republic of China

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