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Frontiers of Materials Science

, Volume 11, Issue 2, pp 162–170 | Cite as

Structural and electrochemical investigations of nanostructured NiTiO3 in acidic environment

  • V. Chellasamy
  • P. Thangadurai
Research Article

Abstract

Electrochemically stable nanostructured nickel titanate (NiTiO3) was prepared by sol-gel method and the structural and electrochemical properties were studied in the presence of H2SO4+CH3OH electrolyte. XRD and Raman studies confirmed the single phase of NiTiO3 with the rhombohedral structure. Thermal stability was studied by TGA. Microstructure analysis by SEM confirmed the uniformly distributed spherical shaped NiTiO3 particles, and TEM studies showed the spherical shaped particles with an average size of 90 nm. The UV-Vis analysis shows the absorption spectrum of NiTiO3, while the FTIR spectrum showed the vibrations related to Ni-O and Ti-O stretching. Electrochemical tests were carried out by cyclic voltammetry (CV) and polarization studies. The CV measurements were made at room temperature as well as at 60°C: at room temperature, the NiTiO3 did not show any activity towards methanol oxidation whereas there observed an activity at the potential of 0.69 V at the operating temperature of 60°C. The ilmenite structured NiTiO3 has oxygen vacancies, most probably on the surface, which could have also contributed to the methanol oxidation. Thus the nanostructured NiTiO3 is proposed to be an active support material for metal electrocatalysts.

Keywords

electrocatalyst methanol oxidation electrochemical nanomaterials NiTiO3 

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Notes

Acknowledgement

Financial support from DST-SERB, India (SR/FTP/ PS-137/2010) to carry out this work is gratefully acknowledged. The CIF of Pondicherry University is also acknowledged.

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Copyright information

© Higher Education Press and Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  1. 1.Centre for Nanoscience and TechnologyPondicherry UniversityR.V. Nagar, Kalapet, PuducherryIndia

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