Designing of noble metal free high performance mesoporous electrocatalysts for water splitting

Zeenat Shafi, Zahoor Ahmad, Khurram Saleem Joya, Shahid Iqbal, Muhammad Naeem Khan

Research output: Journal PublicationArticlepeer-review

7 Citations (Scopus)


The work undertaken involved the synthesis of mesoporous M-ferrites (M = Co, Ni) by facile PEG-assisted microemulsion method and exploration of their electrocatalytic potential for water splitting. The onset potential for oxygen evolution befalls at nearly 1.53 VRHE (η = 300 mV), which is 400–450 mV lesser than those reported for simple ferrites and iron oxides thin-film as electrocatalysts. These electrocatalysts exhibit the good electroactive zone having the lowest Tafel slope value, 68 mVdec−1, as compared to that reported for nickel and cobalt based materials. High TOF value is attributed to the superior catalytic activity of the catalysts. NiFe2O4 exhibits the turn over frequency (TOF) of 2.4 s−1 just at overpotential value of 0.42 VRHE with 1.2 μmol of the prepared sample used in electrochemical analysis. The long-term catalytic stability of Ni and Co-Ferrites spectacle a remarkable and stable current density of >15 mAcm−2 for oxygen evolution and maintained for several hours.

Original languageEnglish
Pages (from-to)39799-39809
Number of pages11
JournalInternational Journal of Hydrogen Energy
Issue number80
Publication statusPublished - 18 Nov 2021
Externally publishedYes


  • Electrocatalysis
  • H production
  • Low overpotential
  • Microemulsion
  • Spinel ferrites

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology


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