Fabrication of CuO nanoparticle interlinked microsphere cages by solution method

  • Jian Quan Qi1, 2Email author,

    Affiliated with

    • Hu Yong Tian2,

      Affiliated with

      • Long Tu Li1 and

        Affiliated with

        • Helen Lai Wah Chan2

          Affiliated with

          Nanoscale Research Letters20072:107

          DOI: 10.1007/s11671-007-9039-7

          Received: 21 November 2006

          Accepted: 4 January 2007

          Published: 3 February 2007


          Here we report a very simple method to convert conventional CuO powders to nanoparticle interlinked microsphere cages by solution method. CuO is dissolved into aqueous ammonia, and the solution is diluted by alcohol and dip coating onto a glass substrate. Drying at 80 °C, the nanostructures with bunchy nanoparticles of Cu(OH)2can be formed. After the substrate immerges into the solution and we vaporize the solution, hollow microspheres can be formed onto the substrate. There are three phases in the as-prepared samples, monoclinic tenorite CuO, orthorhombic Cu(OH)2, and monoclinic carbonatodiamminecopper(II) (Cu(NH3)2CO3). After annealing at 150 °C, the products convert to CuO completely. At annealing temperature above 350 °C, the hollow microspheres became nanoparticle interlinked cages.


          CuO Microsphere Narnoparticle


          Authors’ Affiliations

          Department of Materials Sciences and Engineering, Tsinghua University
          Department of Applied Physics and Materials Research Center, The Hong Kong Polytechnic University


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          © To the authors 2007