Effect of morphology and oxidation state of nickel on diesel soot oxidation activity

M. P.Akhil Vijay, Sunaina S. Patil, D. R. Madhura, Anjana P. Anantharaman, P. Gouramma, Hari Prasad Dasari, S. B. Arya, Harshini Dasari

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

NiO sample is synthesized using the EDTA citrate complex method and calcined at 600 °C/5 h. Ni sample was acquired by reducing NiO to Ni at 600 °C in 4% H2/N2 atmosphere. Its physicochemical properties were obtained by XRD and Raman spectroscopy analysis, where it confirmed the complete reduction of NiO to Ni. SEM and TEM micrographs revealed a drastic particle growth for the Ni, indicating NiO sintering during the reduction process and a considerable surface morphology change. Ozawa and KAS methods were used to calculate the mean activation energy (Ea) value. NiO displayed lower Ea than Ni. Hence, NiO showed better catalytic activity than Ni.

Original languageEnglish
Pages (from-to)1865-1870
Number of pages6
JournalMaterials Today: Proceedings
Volume57
DOIs
Publication statusPublished - 01-2022

All Science Journal Classification (ASJC) codes

  • General Materials Science

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