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Open Access Nano Ideas

Fabrication of CuO nanoparticle interlinked microsphere cages by solution method

JianQuan Qi12*, HuYong Tian2, LongTu Li1 and HelenLaiWah Chan2

Author Affiliations

1 Department of Materials Sciences and Engineering, Tsinghua University, Beijing, 100084, China

2 Department of Applied Physics and Materials Research Center, The Hong Kong Polytechnic University, Hong Kong, China

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Nanoscale Research Letters 2007, 2:107-111  doi:10.1007/s11671-007-9039-7

The electronic version of this article is the complete one and can be found online at:


Received:21 November 2006
Accepted:4 January 2007
Published:3 February 2007

© 2007 to the authors

Abstract

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.

Keywords:
CuO; Microsphere; Narnoparticle

Nano Ideas

[1-37]

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