Effect of Nd-doping on soot oxidation activity of Ceria-based nanoparticles synthesized by Glycine Nitrate Process

Sunaina S. Patil; Hari Prasad Dasari; Harshini Dasari

doi:10.1016/j.nanoso.2019.100388

Effect of Nd-doping on soot oxidation activity of Ceria-based nanoparticles synthesized by Glycine Nitrate Process

Sunaina S. Patil, Hari Prasad Dasari, Harshini Dasari

Department of Chemical Engineering, Manipal Institute of Technology, Manipal

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

Neodymium-doped Ceria (NDC, Nd = 0, 1, 3, 5, 10, 20 and 30 mol %) catalysts were successfully synthesized by Glycine-Nitrate-Process (GNP) and tested for soot oxidation activity. For all NDC catalysts, XRD and Raman spectroscopy analyses showed a fluorite structure of ceria having an F_2gRaman active symmetric breathing mode (O-Ce-O). 1NDC catalyst displayed better T₅₀ temperature (427^∘C) followed by 0NDC (435^∘C), and 30NDC showed the highest T₅₀ temperature (460^∘C). From XPS analysis, 1NDC and 0NDC catalysts showed a high amount of Ce³⁺ concentration and the surface-active oxygen species than compared to other NDC catalysts and thus, resulted in better soot oxidation activity indicating that the surface Ce³⁺ concentration and surface-active oxygen species play a key descriptor role in tuning the soot oxidation activity of NDC catalysts.

Original language	English
Article number	100388
Journal	Nano-Structures and Nano-Objects
Volume	20
DOIs	https://doi.org/10.1016/j.nanoso.2019.100388
Publication status	Published - 01-10-2019

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics
Materials Science(all)
Condensed Matter Physics
Physical and Theoretical Chemistry

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title = "Effect of Nd-doping on soot oxidation activity of Ceria-based nanoparticles synthesized by Glycine Nitrate Process",

abstract = "Neodymium-doped Ceria (NDC, Nd = 0, 1, 3, 5, 10, 20 and 30 mol %) catalysts were successfully synthesized by Glycine-Nitrate-Process (GNP) and tested for soot oxidation activity. For all NDC catalysts, XRD and Raman spectroscopy analyses showed a fluorite structure of ceria having an F2gRaman active symmetric breathing mode (O-Ce-O). 1NDC catalyst displayed better T50 temperature (427∘C) followed by 0NDC (435∘C), and 30NDC showed the highest T50 temperature (460∘C). From XPS analysis, 1NDC and 0NDC catalysts showed a high amount of Ce3+ concentration and the surface-active oxygen species than compared to other NDC catalysts and thus, resulted in better soot oxidation activity indicating that the surface Ce3+ concentration and surface-active oxygen species play a key descriptor role in tuning the soot oxidation activity of NDC catalysts.",

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AU - Dasari, Hari Prasad

AU - Dasari, Harshini

PY - 2019/10/1

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N2 - Neodymium-doped Ceria (NDC, Nd = 0, 1, 3, 5, 10, 20 and 30 mol %) catalysts were successfully synthesized by Glycine-Nitrate-Process (GNP) and tested for soot oxidation activity. For all NDC catalysts, XRD and Raman spectroscopy analyses showed a fluorite structure of ceria having an F2gRaman active symmetric breathing mode (O-Ce-O). 1NDC catalyst displayed better T50 temperature (427∘C) followed by 0NDC (435∘C), and 30NDC showed the highest T50 temperature (460∘C). From XPS analysis, 1NDC and 0NDC catalysts showed a high amount of Ce3+ concentration and the surface-active oxygen species than compared to other NDC catalysts and thus, resulted in better soot oxidation activity indicating that the surface Ce3+ concentration and surface-active oxygen species play a key descriptor role in tuning the soot oxidation activity of NDC catalysts.

AB - Neodymium-doped Ceria (NDC, Nd = 0, 1, 3, 5, 10, 20 and 30 mol %) catalysts were successfully synthesized by Glycine-Nitrate-Process (GNP) and tested for soot oxidation activity. For all NDC catalysts, XRD and Raman spectroscopy analyses showed a fluorite structure of ceria having an F2gRaman active symmetric breathing mode (O-Ce-O). 1NDC catalyst displayed better T50 temperature (427∘C) followed by 0NDC (435∘C), and 30NDC showed the highest T50 temperature (460∘C). From XPS analysis, 1NDC and 0NDC catalysts showed a high amount of Ce3+ concentration and the surface-active oxygen species than compared to other NDC catalysts and thus, resulted in better soot oxidation activity indicating that the surface Ce3+ concentration and surface-active oxygen species play a key descriptor role in tuning the soot oxidation activity of NDC catalysts.

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Effect of Nd-doping on soot oxidation activity of Ceria-based nanoparticles synthesized by Glycine Nitrate Process

Abstract

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