Preparation and characterization of Pt/C and Pt/TiO<inf>2</inf> electrocatalysts by liquid phase photodeposition

Ruiz Camacho, R. G. González Huerta, M. A. Valenzuela, N. Alonso-Vante

Research output: Contribution to conferencePaperResearch

15 Citations (Scopus)

Abstract

The preparation of carbon and titanium dioxide supported Pt catalysts through a photochemical and photocatalytic routes were investigated. The catalysts were prepared by irradiation with UV-light (365 nm) at room temperature using H2PtCl6 and C10H 14O4Pt (Pt(acac)2) as platinum precursors. The kinetic studies revealed that H2PtCl6 produced metallic platinum faster than Pt(acac)2 and also showed that the amount of platinum deposited on TiO2 was higher than on carbon. The samples were characterized by X-ray diffraction, SEM/EDS and cyclic voltammetry. X-ray diffraction permitted to identify the crystallographic (111) and (200) planes from platinum metal on the catalysts synthesized, the intensity of peaks depends of the amount of platinum deposited. SEM/EDS test confirmed what it was found by the kinetics studies. The electrocatalytic activity was compared with a commercial Pt E-Tek catalyst (10 wt%). The electrochemical results showed that Pt/C-AA catalyst synthesized by liquid phase photo-deposition method has stability in acid media and high distribution of the actives sites on the electrode surfaces. It could be considered as a candidate for electro-catalyst for polymer electrolyte fuel cell. The Pt/TiO2 catalysts did not present electrochemical activity. © 2011 Springer Science+Business Media, LLC.
Original languageAmerican English
Pages512-518
Number of pages460
DOIs
StatePublished - 1 Jan 2011
Externally publishedYes
EventTopics in Catalysis -
Duration: 1 Jun 2011 → …

Conference

ConferenceTopics in Catalysis
Period1/06/11 → …

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Electrocatalysts
catalyst
platinum
Catalysts
liquid
Platinum
Liquids
Energy dispersive spectroscopy
Platinum metals
scanning electron microscopy
X ray diffraction
X-ray diffraction
Scanning electron microscopy
Kinetics
kinetics
Catalyst supports
Ultraviolet radiation
Titanium dioxide
Cyclic voltammetry
fuel cell

Cite this

@conference{20c67cabea9a4503b18fe5e24178f6b8,
title = "Preparation and characterization of Pt/C and Pt/TiO2 electrocatalysts by liquid phase photodeposition",
abstract = "The preparation of carbon and titanium dioxide supported Pt catalysts through a photochemical and photocatalytic routes were investigated. The catalysts were prepared by irradiation with UV-light (365 nm) at room temperature using H2PtCl6 and C10H 14O4Pt (Pt(acac)2) as platinum precursors. The kinetic studies revealed that H2PtCl6 produced metallic platinum faster than Pt(acac)2 and also showed that the amount of platinum deposited on TiO2 was higher than on carbon. The samples were characterized by X-ray diffraction, SEM/EDS and cyclic voltammetry. X-ray diffraction permitted to identify the crystallographic (111) and (200) planes from platinum metal on the catalysts synthesized, the intensity of peaks depends of the amount of platinum deposited. SEM/EDS test confirmed what it was found by the kinetics studies. The electrocatalytic activity was compared with a commercial Pt E-Tek catalyst (10 wt{\%}). The electrochemical results showed that Pt/C-AA catalyst synthesized by liquid phase photo-deposition method has stability in acid media and high distribution of the actives sites on the electrode surfaces. It could be considered as a candidate for electro-catalyst for polymer electrolyte fuel cell. The Pt/TiO2 catalysts did not present electrochemical activity. {\circledC} 2011 Springer Science+Business Media, LLC.",
author = "{Ruiz Camacho} and {Gonz{\'a}lez Huerta}, {R. G.} and Valenzuela, {M. A.} and N. Alonso-Vante",
year = "2011",
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language = "American English",
pages = "512--518",
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Preparation and characterization of Pt/C and Pt/TiO<inf>2</inf> electrocatalysts by liquid phase photodeposition. / Ruiz Camacho, ; González Huerta, R. G.; Valenzuela, M. A.; Alonso-Vante, N.

2011. 512-518 Paper presented at Topics in Catalysis, .

Research output: Contribution to conferencePaperResearch

TY - CONF

T1 - Preparation and characterization of Pt/C and Pt/TiO2 electrocatalysts by liquid phase photodeposition

AU - Ruiz Camacho, null

AU - González Huerta, R. G.

AU - Valenzuela, M. A.

AU - Alonso-Vante, N.

PY - 2011/1/1

Y1 - 2011/1/1

N2 - The preparation of carbon and titanium dioxide supported Pt catalysts through a photochemical and photocatalytic routes were investigated. The catalysts were prepared by irradiation with UV-light (365 nm) at room temperature using H2PtCl6 and C10H 14O4Pt (Pt(acac)2) as platinum precursors. The kinetic studies revealed that H2PtCl6 produced metallic platinum faster than Pt(acac)2 and also showed that the amount of platinum deposited on TiO2 was higher than on carbon. The samples were characterized by X-ray diffraction, SEM/EDS and cyclic voltammetry. X-ray diffraction permitted to identify the crystallographic (111) and (200) planes from platinum metal on the catalysts synthesized, the intensity of peaks depends of the amount of platinum deposited. SEM/EDS test confirmed what it was found by the kinetics studies. The electrocatalytic activity was compared with a commercial Pt E-Tek catalyst (10 wt%). The electrochemical results showed that Pt/C-AA catalyst synthesized by liquid phase photo-deposition method has stability in acid media and high distribution of the actives sites on the electrode surfaces. It could be considered as a candidate for electro-catalyst for polymer electrolyte fuel cell. The Pt/TiO2 catalysts did not present electrochemical activity. © 2011 Springer Science+Business Media, LLC.

AB - The preparation of carbon and titanium dioxide supported Pt catalysts through a photochemical and photocatalytic routes were investigated. The catalysts were prepared by irradiation with UV-light (365 nm) at room temperature using H2PtCl6 and C10H 14O4Pt (Pt(acac)2) as platinum precursors. The kinetic studies revealed that H2PtCl6 produced metallic platinum faster than Pt(acac)2 and also showed that the amount of platinum deposited on TiO2 was higher than on carbon. The samples were characterized by X-ray diffraction, SEM/EDS and cyclic voltammetry. X-ray diffraction permitted to identify the crystallographic (111) and (200) planes from platinum metal on the catalysts synthesized, the intensity of peaks depends of the amount of platinum deposited. SEM/EDS test confirmed what it was found by the kinetics studies. The electrocatalytic activity was compared with a commercial Pt E-Tek catalyst (10 wt%). The electrochemical results showed that Pt/C-AA catalyst synthesized by liquid phase photo-deposition method has stability in acid media and high distribution of the actives sites on the electrode surfaces. It could be considered as a candidate for electro-catalyst for polymer electrolyte fuel cell. The Pt/TiO2 catalysts did not present electrochemical activity. © 2011 Springer Science+Business Media, LLC.

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