Synthesis and electrochemical oxygen reduction of platinum nanoparticles supported on mesoporous TiO2

Sangaraju Shanmugam; Aharon Gedanken

doi:10.1021/jp908322h

Synthesis and electrochemical oxygen reduction of platinum nanoparticles supported on mesoporous TiO₂

Sangaraju Shanmugam, Aharon Gedanken

Department of Energy and Science and Engineering

Bar-Ilan University

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

66 Scopus citations

Abstract

Platinum nanoparticles were supported on mesoporous TiO₂ (Pt/TiO₂) by an ultrasound-assisted reduction method. Sonochemistry also helped to further deposit the newly synthesized Pt nanoparticles on the TiO₂. Structural and morphological properties of the prepared electrocatalyst were characterized by X-ray diffraction (XRD), Brunnier Emmet Teller (BET), transmission electron microscopy (TEM), and energy-dispersive X-ray spectroscopy (EDX). The electrochemical properties were evaluated using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and chronoamperometry. The electrochemical property of Pt/TiO₂ was characterized in 0.5 M of H₂SO₄. The electrochemical activity of the Pt/TiO₂ catalyst was studied for the oxygen reduction reaction and compared with the commercial catalyst. It was found that the Pt/TiO₂ showed a higher activity than the Pt supported on carbon; the enhanced activity could be attributed to the better dispersion and interaction of Pt nanoparticles with the support.

Original language	English
Pages (from-to)	18707-18712
Number of pages	6
Journal	Journal of Physical Chemistry C
Volume	113
Issue number	43
DOIs	https://doi.org/10.1021/jp908322h
State	Published - 2009

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abstract = "Platinum nanoparticles were supported on mesoporous TiO2 (Pt/TiO2) by an ultrasound-assisted reduction method. Sonochemistry also helped to further deposit the newly synthesized Pt nanoparticles on the TiO2. Structural and morphological properties of the prepared electrocatalyst were characterized by X-ray diffraction (XRD), Brunnier Emmet Teller (BET), transmission electron microscopy (TEM), and energy-dispersive X-ray spectroscopy (EDX). The electrochemical properties were evaluated using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and chronoamperometry. The electrochemical property of Pt/TiO2 was characterized in 0.5 M of H2SO4. The electrochemical activity of the Pt/TiO2 catalyst was studied for the oxygen reduction reaction and compared with the commercial catalyst. It was found that the Pt/TiO2 showed a higher activity than the Pt supported on carbon; the enhanced activity could be attributed to the better dispersion and interaction of Pt nanoparticles with the support.",

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T1 - Synthesis and electrochemical oxygen reduction of platinum nanoparticles supported on mesoporous TiO2

AU - Shanmugam, Sangaraju

AU - Gedanken, Aharon

PY - 2009

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AB - Platinum nanoparticles were supported on mesoporous TiO2 (Pt/TiO2) by an ultrasound-assisted reduction method. Sonochemistry also helped to further deposit the newly synthesized Pt nanoparticles on the TiO2. Structural and morphological properties of the prepared electrocatalyst were characterized by X-ray diffraction (XRD), Brunnier Emmet Teller (BET), transmission electron microscopy (TEM), and energy-dispersive X-ray spectroscopy (EDX). The electrochemical properties were evaluated using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and chronoamperometry. The electrochemical property of Pt/TiO2 was characterized in 0.5 M of H2SO4. The electrochemical activity of the Pt/TiO2 catalyst was studied for the oxygen reduction reaction and compared with the commercial catalyst. It was found that the Pt/TiO2 showed a higher activity than the Pt supported on carbon; the enhanced activity could be attributed to the better dispersion and interaction of Pt nanoparticles with the support.

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Synthesis and electrochemical oxygen reduction of platinum nanoparticles supported on mesoporous TiO₂

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