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Journal of Solid State Electrochemistry

, Volume 22, Issue 11, pp 3631–3637 | Cite as

ZnO and carbon nanocomposites for enhanced photoelectrochemical sensing activity: influence of the carbon content

  • M. Gaidi
  • M. Salem
  • S. Akir
  • I. Massoudi
  • T. Ghrib
  • Y. Litaiem
  • K. Khirouni
Original Paper
  • 29 Downloads

Abstract

In this work, carbon and zinc oxide (ZnO:C) nanocomposites were obtained by a hydrothermal reaction process. ZnO nanoparticles were first prepared by a homogeneous coprecipitation method. Nanocomposites with atomic concentrations of carbon ranging from 39.4 to 69.7 wt.% were then attained. The microstructure and morphology of each prepared nanocomposite was investigated by X-ray diffraction (XRD), Raman spectroscopy, and scanning electron microscopy (SEM). The ZnO:C nanocomposites were found to present a wurtzite-type hexagonal crystalline structure that shifted towards an amorphous state with increasing C content. Results showed that incorporating the covalent carbon at O sites in the ZnO lattice causes lattice compression. Due to their low band-gap energies, the photoresponses of the ZnO:C nanocomposites extended into the visible region. The sensing characteristics of ZnO:C nanocomposite films were also investigated, and a major improvement in the photoelectrochemical (PEC) efficiency was obtained when the C content was 39 wt.%.

Keywords

ZnO Carbon PEC Hydrothermal SEM 

Notes

Acknowledgments

The authors would like to acknowledge the financial support from the University of Sharjah (project No. 1602143028-P). The authors are also grateful to Mohamed Shameer and Mohamed Adil Abbassi for their technical support.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Center of Advanced Research Materials, Research Institute of Sciences and EngineeringUniversity of SharjahSharjahUnited Arab Emirates
  2. 2.Laboratoire de Photovoltaique, Centre de Recherches et des Technologies de l’Energie, Technopole de Borj-CédriaHammam-LifTunisia
  3. 3.Laboratoire de physique des matériaux et nanomatériaux appliqués à l’environnement, Faculté des sciences de Gabes, Département de PhysiqueGabesTunisia
  4. 4.Centre National de Recherches en Sciences des Matériaux (CNRSM)Technopôle Borj CedriaSolimanTunisia
  5. 5.Department of Physics, College of ScienceImam Abdulrahman Bin Faisal UniversityCity of DammamSaudi Arabia
  6. 6.Laboratory of Physical Alloys (LPA), College of Science of DammamImam Abdulrahman Bin Faisal UniversityDammamSaudi Arabia
  7. 7.Laboratoire nanomatériaux et système pour les énergies renouvelables (LANSER), Centre de Recherches et des Technologies de l’Energie, Technopole de Borj-CédriaHammam-LifTunisia

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