Methanol oxidation reaction on Ce1-xPtxO2-δ and Pt0 particles supported on Ce-modified MWCNTs

C. F. Martinez-Tovar; S. Pacheco-Espinoza; A. I. Cuesta-Balderas; J. Vazquez-Lujano; R. Cabrera-Sierra; F. Chen; Q. Shen; T. Rong; A. Manzo-Robledo; J. R. Vargas-Garcia; L. Zhang

doi:10.1016/j.apsusc.2020.146253

Methanol oxidation reaction on Ce_1-xPt_xO_2-δ and Pt⁰ particles supported on Ce-modified MWCNTs

C. F. Martinez-Tovar, S. Pacheco-Espinoza, A. I. Cuesta-Balderas, J. Vazquez-Lujano, R. Cabrera-Sierra, F. Chen, Q. Shen, T. Rong, A. Manzo-Robledo, J. R. Vargas-Garcia, L. Zhang

Escuela Superior de Ingeniería Química e Industrias Extractivas (ESIQIE)

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

5 Citas (Scopus)

Resumen

A novel catalyst material consisting of Pt⁰ and Ce_1-xPt_xO_1-δ particles supported on multi-walled carbon nanotubes modified with cerium (MWC_1-xCe_xNTs) has been prepared by liquid phase deposition and vapor-phase dissociative methods. Despite low total Pt loading of 6 wt%, Ce_1-xPt_xO_2-δ + Pt⁰/MWC_1-xCe_xNTs catalyst exhibits outstanding activity for methanol oxidation reaction (MOR) and remarkable CO removing ability in acidic media. Differential electrochemical mass spectrometry study demonstrated that CO₂ and HCO₂CH₃ are the oxidation products on Ce_1-xPt_xO_2-δ + Pt⁰/MWC_1-xCe_xNTs. The Ce_1-xPt_xO_2-δ solid solution particles facilitate the adsorption of hydroxyl species due to the considerable presence of oxygen vacancies. Adsorbed hydroxyl species interact with Pt⁰-CO blocked sites releasing Pt⁰ to proceed with MOR. The presence of cerium in MWC_1-xCe_xNTs support presumably facilitates the transport of electrons providing favorable conditions to enhance MOR.

Idioma original	Inglés
Número de artículo	146253
Publicación	Applied Surface Science
Volumen	519
DOI	https://doi.org/10.1016/j.apsusc.2020.146253
Estado	Publicada - 30 jul. 2020

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Martinez-Tovar, C. F., Pacheco-Espinoza, S., Cuesta-Balderas, A. I., Vazquez-Lujano, J., Cabrera-Sierra, R., Chen, F., Shen, Q., Rong, T., Manzo-Robledo, A., Vargas-Garcia, J. R., & Zhang, L. (2020). Methanol oxidation reaction on Ce_1-xPt_xO_2-δ and Pt⁰ particles supported on Ce-modified MWCNTs. Applied Surface Science, 519, Artículo 146253. https://doi.org/10.1016/j.apsusc.2020.146253

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title = "Methanol oxidation reaction on Ce1-xPtxO2-δ and Pt0 particles supported on Ce-modified MWCNTs",

abstract = "A novel catalyst material consisting of Pt0 and Ce1-xPtxO1-δ particles supported on multi-walled carbon nanotubes modified with cerium (MWC1-xCexNTs) has been prepared by liquid phase deposition and vapor-phase dissociative methods. Despite low total Pt loading of 6 wt%, Ce1-xPtxO2-δ + Pt0/MWC1-xCexNTs catalyst exhibits outstanding activity for methanol oxidation reaction (MOR) and remarkable CO removing ability in acidic media. Differential electrochemical mass spectrometry study demonstrated that CO2 and HCO2CH3 are the oxidation products on Ce1-xPtxO2-δ + Pt0/MWC1-xCexNTs. The Ce1-xPtxO2-δ solid solution particles facilitate the adsorption of hydroxyl species due to the considerable presence of oxygen vacancies. Adsorbed hydroxyl species interact with Pt0-CO blocked sites releasing Pt0 to proceed with MOR. The presence of cerium in MWC1-xCexNTs support presumably facilitates the transport of electrons providing favorable conditions to enhance MOR.",

keywords = "Differential electrochemical mass spectrometry (DEMS), Enriched oxygen vacancies, Methanol oxidation reaction (MOR), Modified MWCNTs, Pt-Ce solid solution",

author = "Martinez-Tovar, {C. F.} and S. Pacheco-Espinoza and Cuesta-Balderas, {A. I.} and J. Vazquez-Lujano and R. Cabrera-Sierra and F. Chen and Q. Shen and T. Rong and A. Manzo-Robledo and Vargas-Garcia, {J. R.} and L. Zhang",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2020",

month = jul,

day = "30",

doi = "10.1016/j.apsusc.2020.146253",

language = "Ingl{\'e}s",

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journal = "Applied Surface Science",

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TY - JOUR

T1 - Methanol oxidation reaction on Ce1-xPtxO2-δ and Pt0 particles supported on Ce-modified MWCNTs

AU - Martinez-Tovar, C. F.

AU - Pacheco-Espinoza, S.

AU - Cuesta-Balderas, A. I.

AU - Vazquez-Lujano, J.

AU - Cabrera-Sierra, R.

AU - Chen, F.

AU - Shen, Q.

AU - Rong, T.

AU - Manzo-Robledo, A.

AU - Vargas-Garcia, J. R.

AU - Zhang, L.

PY - 2020/7/30

Y1 - 2020/7/30

N2 - A novel catalyst material consisting of Pt0 and Ce1-xPtxO1-δ particles supported on multi-walled carbon nanotubes modified with cerium (MWC1-xCexNTs) has been prepared by liquid phase deposition and vapor-phase dissociative methods. Despite low total Pt loading of 6 wt%, Ce1-xPtxO2-δ + Pt0/MWC1-xCexNTs catalyst exhibits outstanding activity for methanol oxidation reaction (MOR) and remarkable CO removing ability in acidic media. Differential electrochemical mass spectrometry study demonstrated that CO2 and HCO2CH3 are the oxidation products on Ce1-xPtxO2-δ + Pt0/MWC1-xCexNTs. The Ce1-xPtxO2-δ solid solution particles facilitate the adsorption of hydroxyl species due to the considerable presence of oxygen vacancies. Adsorbed hydroxyl species interact with Pt0-CO blocked sites releasing Pt0 to proceed with MOR. The presence of cerium in MWC1-xCexNTs support presumably facilitates the transport of electrons providing favorable conditions to enhance MOR.

AB - A novel catalyst material consisting of Pt0 and Ce1-xPtxO1-δ particles supported on multi-walled carbon nanotubes modified with cerium (MWC1-xCexNTs) has been prepared by liquid phase deposition and vapor-phase dissociative methods. Despite low total Pt loading of 6 wt%, Ce1-xPtxO2-δ + Pt0/MWC1-xCexNTs catalyst exhibits outstanding activity for methanol oxidation reaction (MOR) and remarkable CO removing ability in acidic media. Differential electrochemical mass spectrometry study demonstrated that CO2 and HCO2CH3 are the oxidation products on Ce1-xPtxO2-δ + Pt0/MWC1-xCexNTs. The Ce1-xPtxO2-δ solid solution particles facilitate the adsorption of hydroxyl species due to the considerable presence of oxygen vacancies. Adsorbed hydroxyl species interact with Pt0-CO blocked sites releasing Pt0 to proceed with MOR. The presence of cerium in MWC1-xCexNTs support presumably facilitates the transport of electrons providing favorable conditions to enhance MOR.

KW - Differential electrochemical mass spectrometry (DEMS)

KW - Enriched oxygen vacancies

KW - Methanol oxidation reaction (MOR)

KW - Modified MWCNTs

KW - Pt-Ce solid solution

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U2 - 10.1016/j.apsusc.2020.146253

DO - 10.1016/j.apsusc.2020.146253

M3 - Artículo

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