CO Adsorption on Pt Nanoparticles in Low E-Fields Studied by ATR-IR Spectroscopy in a Microreactor

A. Susarrey Arce; R.M. Tiggelaar; J.G.E. Gardeniers; A. van Houselt; L. Lefferts

doi:10.1021/acs.jpcc.5b08392

CO Adsorption on Pt Nanoparticles in Low E-Fields Studied by ATR-IR Spectroscopy in a Microreactor

A. Susarrey Arce, R.M. Tiggelaar, J.G.E. Gardeniers, A. van Houselt, L. Lefferts

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Abstract

The adsorption of carbon monoxide (CO) on platinum (Pt) nanoparticles under the influence of a low electrical field (E-field) is studied. The adsorption of CO is monitored by attenuated total reflection infrared (ATR-IR) spectroscopy, while an external electrical field is applied over the microreactor. Linearly (on top; COL), bridged (two-fold hollow; COB), and multiply (three-fold hollow; CO) adsorbed CO species were found on the Pt nanoparticles. In a sequence of adsorption experiments the integrated ATR-IR intensity of the absorption band of the linearly adsorbed COL was found to reach steady-state values after an initial decrease, which is attributed to a loss of Pt surface area due to sintering of the Pt metal nanoparticles. The application of electrical fields results in changes in the ratio between linearly adsorbed CO, on top of Pt, versus CO adsorbed on multiple Pt atoms.

Original language	English
Pages (from-to)	24887-24894
Journal	The Journal of physical chemistry C
Volume	119
Issue number	44
DOIs	https://doi.org/10.1021/acs.jpcc.5b08392
Publication status	Published - 2015

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2023 OA procedure

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title = "CO Adsorption on Pt Nanoparticles in Low E-Fields Studied by ATR-IR Spectroscopy in a Microreactor",

abstract = "The adsorption of carbon monoxide (CO) on platinum (Pt) nanoparticles under the influence of a low electrical field (E-field) is studied. The adsorption of CO is monitored by attenuated total reflection infrared (ATR-IR) spectroscopy, while an external electrical field is applied over the microreactor. Linearly (on top; COL), bridged (two-fold hollow; COB), and multiply (three-fold hollow; CO) adsorbed CO species were found on the Pt nanoparticles. In a sequence of adsorption experiments the integrated ATR-IR intensity of the absorption band of the linearly adsorbed COL was found to reach steady-state values after an initial decrease, which is attributed to a loss of Pt surface area due to sintering of the Pt metal nanoparticles. The application of electrical fields results in changes in the ratio between linearly adsorbed CO, on top of Pt, versus CO adsorbed on multiple Pt atoms.",

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year = "2015",

doi = "10.1021/acs.jpcc.5b08392",

language = "English",

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pages = "24887--24894",

journal = "The Journal of physical chemistry C",

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TY - JOUR

T1 - CO Adsorption on Pt Nanoparticles in Low E-Fields Studied by ATR-IR Spectroscopy in a Microreactor

AU - Susarrey Arce, A.

AU - Tiggelaar, R.M.

AU - Gardeniers, J.G.E.

AU - van Houselt, A.

AU - Lefferts, L.

PY - 2015

Y1 - 2015

N2 - The adsorption of carbon monoxide (CO) on platinum (Pt) nanoparticles under the influence of a low electrical field (E-field) is studied. The adsorption of CO is monitored by attenuated total reflection infrared (ATR-IR) spectroscopy, while an external electrical field is applied over the microreactor. Linearly (on top; COL), bridged (two-fold hollow; COB), and multiply (three-fold hollow; CO) adsorbed CO species were found on the Pt nanoparticles. In a sequence of adsorption experiments the integrated ATR-IR intensity of the absorption band of the linearly adsorbed COL was found to reach steady-state values after an initial decrease, which is attributed to a loss of Pt surface area due to sintering of the Pt metal nanoparticles. The application of electrical fields results in changes in the ratio between linearly adsorbed CO, on top of Pt, versus CO adsorbed on multiple Pt atoms.

AB - The adsorption of carbon monoxide (CO) on platinum (Pt) nanoparticles under the influence of a low electrical field (E-field) is studied. The adsorption of CO is monitored by attenuated total reflection infrared (ATR-IR) spectroscopy, while an external electrical field is applied over the microreactor. Linearly (on top; COL), bridged (two-fold hollow; COB), and multiply (three-fold hollow; CO) adsorbed CO species were found on the Pt nanoparticles. In a sequence of adsorption experiments the integrated ATR-IR intensity of the absorption band of the linearly adsorbed COL was found to reach steady-state values after an initial decrease, which is attributed to a loss of Pt surface area due to sintering of the Pt metal nanoparticles. The application of electrical fields results in changes in the ratio between linearly adsorbed CO, on top of Pt, versus CO adsorbed on multiple Pt atoms.

KW - 2023 OA procedure

U2 - 10.1021/acs.jpcc.5b08392

DO - 10.1021/acs.jpcc.5b08392

M3 - Article

SN - 1932-7447

VL - 119

SP - 24887

EP - 24894

JO - The Journal of physical chemistry C

JF - The Journal of physical chemistry C

IS - 44

ER -

CO Adsorption on Pt Nanoparticles in Low E-Fields Studied by ATR-IR Spectroscopy in a Microreactor

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