Glucose sensing behavior of cobalt doped ZnO nanoparticles synthesized by co-precipitation method

  • G. Vijayaprasath
  • R. Murugan
  • J. Shankara Narayanan
  • V. Dharuman
  • G. Ravi
  • Y. Hayakawa


Pure and Zn1−xCoxO (x = 0.05, 0.10 and 0.15) nanoparticles were synthesized by co-precipitation method. Powder X-ray diffraction studies confirmed that pure and Co doped ZnO have a single phase nature with hexagonal wurtzite structure and Co2+ ions were successfully incorporated into the lattice position of Zn2+ ions in ZnO matrix. FTIR and EDS spectra results confirmed the incorporation of the dopants into the ZnO lattice structure. FESEM images showed the flower like morphology in ZnO and flowers are dispersed to grains in Co doped ZnO nanoparticles. The chemical composition of Zn0.90Co0.10O nanoparticles were confirmed by XPS. The XPS results clearly showed the existence of Co as a doping element into the ZnO crystalline lattice. Further, the synthesized Co doped ZnO nanoparticles have been used for electrochemical non-enzymatic glucose biosensing. The lowest detection limit of the proposed sensor was found to be 5 µM. The sensor selectively oxidizes glucose in the presence of other interfering compounds like l-dopa, ascorbic acid, hydrogen peroxide and uric acid.


Cobalt Acetate Binding Energy Position Glucose Oxidation Current Flowerlike Morphology 



The authors G. Ravi and G. Vijayaprasath have gratefully acknowledged the UGC [Ref. No. F. 41-933/2012 (SR)], India, for providing financial support to carry out this work.


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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • G. Vijayaprasath
    • 1
  • R. Murugan
    • 1
  • J. Shankara Narayanan
    • 2
  • V. Dharuman
    • 2
  • G. Ravi
    • 1
  • Y. Hayakawa
    • 3
  1. 1.Department of PhysicsAlagappa UniversityKaraikudiIndia
  2. 2.Department of Bioelectronics and BiosensorsAlagappa UniversityKaraikudiIndia
  3. 3.Research Institute of ElectronicsShizuoka UniversityHamamatsuJapan

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