Electroreduction of N Oxz species in alkaline medium on Pt nanoparticles

L. A. Estudillo-Wong; G. Santillán-Díaz; E. M. Arce-Estrada; N. Alonso-Vante; A. Manzo-Robledo

doi:10.1016/j.electacta.2012.10.055

Electroreduction of N O_x^z species in alkaline medium on Pt nanoparticles

L. A. Estudillo-Wong, G. Santillán-Díaz, E. M. Arce-Estrada, N. Alonso-Vante, A. Manzo-Robledo

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

12 Scopus citations

Abstract

The electroreduction of nitrogen species in alkaline medium was performed on platinum nanoparticles (1-2 nm) with metal loadings of 5 and 10 wt% Pt, synthesized by the chemical carbonyl route. The electrochemically active surface analysis evidences that the real surface area is concomitant to the Pt-loading in the support. The electrochemical analysis put in evidence that nitrite ions were reduced from -0.6 to -0.78 V and the charge transfer step is attributed to the NO₂^-/NO redox couple. The Tafel slope analysis confirms that from E_p to -0.78 V the reduction of NO occurs via an ECE mechanism. An analysis of Nicholson-Shain schemes and NO-saturated in solution verified these results.

Original language	English
Pages (from-to)	358-364
Number of pages	7
Journal	Electrochimica Acta
Volume	88
DOIs	https://doi.org/10.1016/j.electacta.2012.10.055
State	Published - 15 Jan 2013
Externally published	Yes

Keywords

Catalytic activity
Gas adsorption
Interfacial phenomena
Mechanisms
Nanoparticles

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10.1016/j.electacta.2012.10.055

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title = "Electroreduction of N Oxz species in alkaline medium on Pt nanoparticles",

abstract = "The electroreduction of nitrogen species in alkaline medium was performed on platinum nanoparticles (1-2 nm) with metal loadings of 5 and 10 wt% Pt, synthesized by the chemical carbonyl route. The electrochemically active surface analysis evidences that the real surface area is concomitant to the Pt-loading in the support. The electrochemical analysis put in evidence that nitrite ions were reduced from -0.6 to -0.78 V and the charge transfer step is attributed to the NO2-/NO redox couple. The Tafel slope analysis confirms that from Ep to -0.78 V the reduction of NO occurs via an ECE mechanism. An analysis of Nicholson-Shain schemes and NO-saturated in solution verified these results.",

keywords = "Catalytic activity, Gas adsorption, Interfacial phenomena, Mechanisms, Nanoparticles",

author = "Estudillo-Wong, {L. A.} and G. Santill{\'a}n-D{\'i}az and Arce-Estrada, {E. M.} and N. Alonso-Vante and A. Manzo-Robledo",

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TY - JOUR

T1 - Electroreduction of N Oxz species in alkaline medium on Pt nanoparticles

AU - Estudillo-Wong, L. A.

AU - Santillán-Díaz, G.

AU - Arce-Estrada, E. M.

AU - Alonso-Vante, N.

AU - Manzo-Robledo, A.

PY - 2013/1/15

Y1 - 2013/1/15

N2 - The electroreduction of nitrogen species in alkaline medium was performed on platinum nanoparticles (1-2 nm) with metal loadings of 5 and 10 wt% Pt, synthesized by the chemical carbonyl route. The electrochemically active surface analysis evidences that the real surface area is concomitant to the Pt-loading in the support. The electrochemical analysis put in evidence that nitrite ions were reduced from -0.6 to -0.78 V and the charge transfer step is attributed to the NO2-/NO redox couple. The Tafel slope analysis confirms that from Ep to -0.78 V the reduction of NO occurs via an ECE mechanism. An analysis of Nicholson-Shain schemes and NO-saturated in solution verified these results.

AB - The electroreduction of nitrogen species in alkaline medium was performed on platinum nanoparticles (1-2 nm) with metal loadings of 5 and 10 wt% Pt, synthesized by the chemical carbonyl route. The electrochemically active surface analysis evidences that the real surface area is concomitant to the Pt-loading in the support. The electrochemical analysis put in evidence that nitrite ions were reduced from -0.6 to -0.78 V and the charge transfer step is attributed to the NO2-/NO redox couple. The Tafel slope analysis confirms that from Ep to -0.78 V the reduction of NO occurs via an ECE mechanism. An analysis of Nicholson-Shain schemes and NO-saturated in solution verified these results.

KW - Catalytic activity

KW - Gas adsorption

KW - Interfacial phenomena

KW - Mechanisms

KW - Nanoparticles

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U2 - 10.1016/j.electacta.2012.10.055

DO - 10.1016/j.electacta.2012.10.055

M3 - Artículo

AN - SCOPUS:84870658897

SN - 0013-4686

VL - 88

SP - 358

EP - 364

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

Electroreduction of N O_x^z species in alkaline medium on Pt nanoparticles

Abstract

Keywords

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