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Hexagonal cerium oxide decorated on β-Ni(OH)2 nanosheets stabilized by reduced graphene oxide for effective sensing of H2O2

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2022, 32(2), pp.591-604
  • DOI : 10.1007/s42823-021-00296-5
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : August 4, 2021
  • Accepted : October 17, 2021
  • Published : March 1, 2022

Manjushree S. G. 1 Adarakatti Prashanth S. 2 Udayakumar Velu 1 Almalki Abdulraheem S. A. 3

1Department of Chemistry, Siddaganga Institute of Technology
2Department of Chemistry, SVM Arts, Science and Commerce College
3Department of Chemistry, Faculty of Science, Taif University

Accredited

ABSTRACT

Cerium oxide decorated on nickel hydroxide anchored on reduced graphene oxide (Ce-Ni(OH)2/rGO) composite with hexagonal structures were synthesized by facile hydrothermal method. Fourier transform infrared spectroscopy (FT-IR), high-resolution transmission electron microscopy with selected area diffraction (HRTEM-SAED), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller (BET) surface area analysis and electrochemical technology were used to characterize the composite. Due to its unique two-dimensional structures and synergistic effect among Ce2O3, Ni(OH)2 and rGO components indicated two-dimensional hexagonal nano Ce-Ni(OH)2/rGO composite is promising electrode material for improved electrochemical H2O2 sensing application. From 50 to 800 µM, the H2O2 concentration was linearly proportional to the oxidation current, with a lower detection of limit of 10.5 µM (S/N = 3). The sensor has a higher sensitivity of 0.625 μA μM−1 cm−2. In addition, the sensor demonstrated high selectivity, repeatability and stability. These findings proved the viability of the synthetic method and the potential of the composites as a H2O2 sensing option.

Citation status

This is the result of checking the information with the same ISSN, publication year, volume, and start page between the WoS and the KCI journals. (as of 2024-07-26)

Total Citation Counts(KCI+WOS) (29) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

Scopus Citation Counts (28) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2024-10-01)

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