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Influence of H2O2 treatment on electrochemical activity of mesoporous carbon-supported Pt–Ru catalysts

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  • Lee, Seul-Yi
  • Kim, Byung-Ju
  • Park, Soo-Jin

Abstract

In this report, we describe the preparation of OMC (ordered mesoporous carbon) via a conventional templating method using mesoporous silica (SBA-15) as a Pt–Ru catalyst support for use in fuel cells. The influence of surface treatment of the carbon supports on the electrochemical properties of Pt–Ru/OMC was investigated by exposing the surface to hydrogen peroxide at concentrations of 0, 15, 30, 40, and 50 wt%. X-ray photoelectron spectroscopy (XPS) revealed that surface treatment changed the surface chemistry of the OMC samples considerably and introduced surface oxygen functional groups including C–O, CO, OC–O–H, and CO32−. The numbers of these functional groups increased with increasing concentration of H2O2 used in the surface treatment, while the average Pt–Ru nanoparticle size decreased owing to their improved dispersibility. Using CV (cyclic voltammetry), we determined that the electrochemical activity of the Pt–Ru catalyst increased with increasing H2O2 concentration used for surface treatment, up to 40 wt%, due to the introduction of oxygen functional groups. Based on these results, we have established that surface treatment influences the surface properties of OMC materials, resulting in improved electrochemical activity of catalysts for fuel cells.

Suggested Citation

  • Lee, Seul-Yi & Kim, Byung-Ju & Park, Soo-Jin, 2014. "Influence of H2O2 treatment on electrochemical activity of mesoporous carbon-supported Pt–Ru catalysts," Energy, Elsevier, vol. 66(C), pages 70-76.
    • Handle: RePEc:eee:energy:v:66:y:2014:i:c:p:70-76
    DOI: 10.1016/j.energy.2014.01.041
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    References listed on IDEAS

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    1. Na, Youngseung & Kwon, Jungmin & Kim, Hyun & Cho, Hyejung & Song, Inseob, 2013. "Characteristics of a direct methanol fuel cell system with the time shared fuel supplying approach," Energy, Elsevier, vol. 50(C), pages 406-411.
    2. Borghei, Maryam & Scotti, Gianmario & Kanninen, Petri & Weckman, Timo & Anoshkin, Ilya V. & Nasibulin, Albert G. & Franssila, Sami & Kauppinen, Esko I. & Kallio, Tanja & Ruiz, Virginia, 2014. "Enhanced performance of a silicon microfabricated direct methanol fuel cell with PtRu catalysts supported on few-walled carbon nanotubes," Energy, Elsevier, vol. 65(C), pages 612-620.
    3. Lee, Jun Sung & Han, Gi Bo & Kang, Misook, 2012. "Low temperature steam reforming of ethanol for carbon monoxide-free hydrogen production over mesoporous Sn-incorporated SBA-15 catalysts," Energy, Elsevier, vol. 44(1), pages 248-256.
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    Cited by:

    1. Li, Li & Zheng, Keqing & Ni, Meng & Leung, Michael K.H. & Xuan, Jin, 2015. "Partial modification of flow-through porous electrodes in microfluidic fuel cell," Energy, Elsevier, vol. 88(C), pages 563-571.
    2. Yang, H.N. & Lee, D.C. & Park, K.W. & Kim, W.J., 2015. "Platinum–boron doped graphene intercalated by carbon black for cathode catalyst in proton exchange membrane fuel cell," Energy, Elsevier, vol. 89(C), pages 500-510.
    3. Raoof, Jahan-Bakhsh & Hosseini, Sayed Reza & Ojani, Reza & Mandegarzad, Sakineh, 2015. "MOF-derived Cu/nanoporous carbon composite and its application for electro-catalysis of hydrogen evolution reaction," Energy, Elsevier, vol. 90(P1), pages 1075-1081.

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