• Synthesis of 𝛾-Al2O3 nanowires through a boehmite precursor route

    • Fulltext


        Click here to view fulltext PDF

      Permanent link:

    • Keywords


      𝛾-Al2O3; 𝛾-AlOOH; nanowires; hydrothermal route; pH value.

    • Abstract


      Crystalline 𝛾-Al2O3 nanowires with diameter, 20–40 nm, length above 600 nm and aspect ratio above 30 have been successfully synthesized by thermal decomposition of boehmite (𝛾-AlOOH) precursors obtained via hydrothermal route by using AlCl3, NaOH and NH3 as starting materials. Thermogravimetric analysis (TG), differential thermal analysis (DTA), X-ray diffraction (XRD), transmission electron microscope (TEM), selected area electron diffraction (SAED) and high resolution transmission electron microscope (HRTEM) were used to characterize the features of the as-made 𝛾-Al2O3 nanowires and their 𝛾-AlOOH precursors. The pH value of the solution and the mixed precipitant play important roles in the formation of 𝛾-AlOOH nanowires. After calcination at 500°C for 2 h, the orthorhombic 𝛾-AlOOH transforms to cubic 𝛾-Al2O3 and retains nanowire morphology.

    • Author Affiliations


      Qi Yang1

      1. School of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
    • Dates

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.