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

doi:10.1016/j.matpr.2022.01.119

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 journal › Article › peer-review

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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 (E_a) value. NiO displayed lower E_a than Ni. Hence, NiO showed better catalytic activity than Ni.

Original language	English
Pages (from-to)	1865-1870
Number of pages	6
Journal	Materials Today: Proceedings
Volume	57
DOIs	https://doi.org/10.1016/j.matpr.2022.01.119
Publication status	Published - 01-2022

All Science Journal Classification (ASJC) codes

Materials Science(all)

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10.1016/j.matpr.2022.01.119

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@article{47849ec394ab4476aa023e022eb77341,

title = "Effect of morphology and oxidation state of nickel on diesel soot oxidation activity",

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.",

author = "Vijay, {M. P.Akhil} and Patil, {Sunaina S.} and Madhura, {D. R.} and Anantharaman, {Anjana P.} and P. Gouramma and Dasari, {Hari Prasad} and Arya, {S. B.} and Harshini Dasari",

note = "Funding Information: Dr. HPD acknowledges the SERB Core Research Grant ( CRG/2020/000425 ), thanks to CeNSE, IISc Bangalore, MRC, MNIT Jaipur, and SAIF STIC Cochin facilitating Raman Spectroscopy, TEM, and UV-Vis DRS data, respectively. Publisher Copyright: {\textcopyright} 2022",

year = "2022",

month = jan,

doi = "10.1016/j.matpr.2022.01.119",

language = "English",

volume = "57",

pages = "1865--1870",

journal = "Materials Today: Proceedings",

issn = "2214-7853",

publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Effect of morphology and oxidation state of nickel on diesel soot oxidation activity

AU - Vijay, M. P.Akhil

AU - Patil, Sunaina S.

AU - Madhura, D. R.

AU - Anantharaman, Anjana P.

AU - Gouramma, P.

AU - Dasari, Hari Prasad

AU - Arya, S. B.

AU - Dasari, Harshini

N1 - Funding Information: Dr. HPD acknowledges the SERB Core Research Grant ( CRG/2020/000425 ), thanks to CeNSE, IISc Bangalore, MRC, MNIT Jaipur, and SAIF STIC Cochin facilitating Raman Spectroscopy, TEM, and UV-Vis DRS data, respectively. Publisher Copyright: © 2022

PY - 2022/1

Y1 - 2022/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85148017724&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85148017724&partnerID=8YFLogxK

U2 - 10.1016/j.matpr.2022.01.119

DO - 10.1016/j.matpr.2022.01.119

M3 - Article

AN - SCOPUS:85148017724

SN - 2214-7853

VL - 57

SP - 1865

EP - 1870

JO - Materials Today: Proceedings

JF - Materials Today: Proceedings

ER -

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

Abstract

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