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    • Synthesis and characterization of mixture of nanozirconia and nanosilica obtained from commercially available zircon flour by sol–gel method

      A J K Prasad S M Shashidhara B K Muralidhara

      Volume 34 Issue 7 December 2011 pp 1339-1344

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      https://www.ias.ac.in/article/fulltext/boms/034/07/1339-1344

    • Keywords

       

      Nanozirconia; nanosilica; zircon flour (commercially available); sol–gel method.

    • Abstract

       

      In this paper we present the results of our patented (application filed in India) process for synthesizing a mixture of nanozirconia and nanosilica, obtained by the sol–gel method from commercially available zircon flour and hydrofluoric acid at low temperatures (∼ 100°C). Within the scope of this study, 99.2% dissolution of zircon was obtained by using 40% HF for a solid–liquid (S/L) ratio of 0.05 for a digestion period of 120 h. The nanoparticles, characterized by XRD, SEM and TEM techniques, were found to be largely spherical in shape and the average size of the particles was found to be less than 5 nm. Within the product, zirconiarich and silica-rich regions were found to exist.

    • Author Affiliations

       

      A J K Prasad1 S M Shashidhara2 B K Muralidhara3

      1. Department of Mechanical Engineering, Sir M. Visvesvarya Institute of Technology, Hunasmaranahalli, Yelahanka, Bangalore 562 157, India
      2. Department of Mechanical Engineering, Siddaganga Institute of Technology, Tumkur 572 103, India
      3. Department of Mechanical Engineering, University Visvesvaraya College of Engineering, Bangalore 560 001, India

    • Dates

       
      Published
      December 2011
      Manuscript received
      3 April 2010

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