Active area and particle size of Pt particles synthesized from (NH 4)2PtCl6 on a carbon support

Ysmael Verde; Gabriel Alonso-Nuñez; Mario Miki-Yoshida; M. José-Yacamán; Victor H. Ramos; Arturo Keer

doi:10.1016/j.cattod.2005.07.016

Active area and particle size of Pt particles synthesized from (NH ₄)₂PtCl₆ on a carbon support

Ysmael Verde, Gabriel Alonso-Nuñez, Mario Miki-Yoshida, M. José-Yacamán, Victor H. Ramos, Arturo Keer

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

36 Scopus citations

Abstract

Ammonium hexachloroplatinate (AHCP, (NH₄)₂PtCl ₆) is used for the synthesis of Pt/C, which can be used as catalyst in the production of proton exchange membrane fuel cells (PEMFC's). AHCP is used because of its low temperature of decomposition and its high aqueous solubility at room temperature. In this work, high-resolution transmission electron microscopy (HRTEM) was used to characterize the size and distribution of the Pt particles, obtained from AHCP on a carbon support by a new preparation method. HRTEM showed an excellent dispersion of Pt particles between 2 and 4 nm. The electrochemical properties of the Pt/C catalyst were determined by means of ex situ cyclic voltammetry, which showed an electrochemically active area high enough for fuel cell electrodes. Comparison of the active area calculated from HRTEM and cyclic voltammetry showed little differences resulting in particle sizes of similar magnitude between the two techniques.

Original language	English (US)
Pages (from-to)	826-830
Number of pages	5
Journal	Catalysis Today
Volume	107-108
DOIs	https://doi.org/10.1016/j.cattod.2005.07.016
State	Published - Oct 30 2005
Externally published	Yes

Keywords

Catalysts
Cyclic voltammetry
Fuel cells
HRTEM
Pt/C

ASJC Scopus subject areas

Catalysis
General Chemistry

Access to Document

10.1016/j.cattod.2005.07.016

Cite this

@article{62eb53a86d4a46399be468eb4389d164,

title = "Active area and particle size of Pt particles synthesized from (NH 4)2PtCl6 on a carbon support",

abstract = "Ammonium hexachloroplatinate (AHCP, (NH4)2PtCl 6) is used for the synthesis of Pt/C, which can be used as catalyst in the production of proton exchange membrane fuel cells (PEMFC's). AHCP is used because of its low temperature of decomposition and its high aqueous solubility at room temperature. In this work, high-resolution transmission electron microscopy (HRTEM) was used to characterize the size and distribution of the Pt particles, obtained from AHCP on a carbon support by a new preparation method. HRTEM showed an excellent dispersion of Pt particles between 2 and 4 nm. The electrochemical properties of the Pt/C catalyst were determined by means of ex situ cyclic voltammetry, which showed an electrochemically active area high enough for fuel cell electrodes. Comparison of the active area calculated from HRTEM and cyclic voltammetry showed little differences resulting in particle sizes of similar magnitude between the two techniques.",

keywords = "Catalysts, Cyclic voltammetry, Fuel cells, HRTEM, Pt/C",

author = "Ysmael Verde and Gabriel Alonso-Nu{\~n}ez and Mario Miki-Yoshida and M. Jos{\'e}-Yacam{\'a}n and Ramos, {Victor H.} and Arturo Keer",

note = "Funding Information: The support received from Consejo Nacional de Ciencia y Tecnologia (CONACYT), Mexico, through grants J31264-U and 40118-Y is acknowledged. G. Alonso thanks to UMSNH by the support during sabbatical year 2005. Thanks are due to Dr. Allan J. Jacobson and Dr. Hua Zhang from Houston University for the support on the electrochemical characterization; and to Mr. Enrique Torres, from CIMAV for his help with the particle size distribution analysis.",

year = "2005",

month = oct,

day = "30",

doi = "10.1016/j.cattod.2005.07.016",

language = "English (US)",

volume = "107-108",

pages = "826--830",

journal = "Catalysis Today",

issn = "0920-5861",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Active area and particle size of Pt particles synthesized from (NH 4)2PtCl6 on a carbon support

AU - Verde, Ysmael

AU - Alonso-Nuñez, Gabriel

AU - Miki-Yoshida, Mario

AU - José-Yacamán, M.

AU - Ramos, Victor H.

AU - Keer, Arturo

N1 - Funding Information: The support received from Consejo Nacional de Ciencia y Tecnologia (CONACYT), Mexico, through grants J31264-U and 40118-Y is acknowledged. G. Alonso thanks to UMSNH by the support during sabbatical year 2005. Thanks are due to Dr. Allan J. Jacobson and Dr. Hua Zhang from Houston University for the support on the electrochemical characterization; and to Mr. Enrique Torres, from CIMAV for his help with the particle size distribution analysis.

PY - 2005/10/30

Y1 - 2005/10/30

N2 - Ammonium hexachloroplatinate (AHCP, (NH4)2PtCl 6) is used for the synthesis of Pt/C, which can be used as catalyst in the production of proton exchange membrane fuel cells (PEMFC's). AHCP is used because of its low temperature of decomposition and its high aqueous solubility at room temperature. In this work, high-resolution transmission electron microscopy (HRTEM) was used to characterize the size and distribution of the Pt particles, obtained from AHCP on a carbon support by a new preparation method. HRTEM showed an excellent dispersion of Pt particles between 2 and 4 nm. The electrochemical properties of the Pt/C catalyst were determined by means of ex situ cyclic voltammetry, which showed an electrochemically active area high enough for fuel cell electrodes. Comparison of the active area calculated from HRTEM and cyclic voltammetry showed little differences resulting in particle sizes of similar magnitude between the two techniques.

AB - Ammonium hexachloroplatinate (AHCP, (NH4)2PtCl 6) is used for the synthesis of Pt/C, which can be used as catalyst in the production of proton exchange membrane fuel cells (PEMFC's). AHCP is used because of its low temperature of decomposition and its high aqueous solubility at room temperature. In this work, high-resolution transmission electron microscopy (HRTEM) was used to characterize the size and distribution of the Pt particles, obtained from AHCP on a carbon support by a new preparation method. HRTEM showed an excellent dispersion of Pt particles between 2 and 4 nm. The electrochemical properties of the Pt/C catalyst were determined by means of ex situ cyclic voltammetry, which showed an electrochemically active area high enough for fuel cell electrodes. Comparison of the active area calculated from HRTEM and cyclic voltammetry showed little differences resulting in particle sizes of similar magnitude between the two techniques.

KW - Catalysts

KW - Cyclic voltammetry

KW - Fuel cells

KW - HRTEM

KW - Pt/C

UR - http://www.scopus.com/inward/record.url?scp=26844443576&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=26844443576&partnerID=8YFLogxK

U2 - 10.1016/j.cattod.2005.07.016

DO - 10.1016/j.cattod.2005.07.016

M3 - Article

AN - SCOPUS:26844443576

SN - 0920-5861

VL - 107-108

SP - 826

EP - 830

JO - Catalysis Today

JF - Catalysis Today

ER -