High performance Pt nanoparticles prepared by new surfactants for C-1 to C-3 alcohol oxidation reactions

ŞEN F., GÖKAĞAÇ ARSLAN G., Sen S.

JOURNAL OF NANOPARTICLE RESEARCH, cilt.15, sa.10, 2013 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 15 Sayı: 10
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1007/s11051-013-1979-5
  • Dergi Adı: JOURNAL OF NANOPARTICLE RESEARCH
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Anahtar Kelimeler: Platinum nanoparticles, Alcohol oxidation, Fuel cells, Carbon support, X-ray photoelectron spectroscopy, METHANOL OXIDATION, FUEL-CELLS, ELECTROCATALYTIC OXIDATION, PLATINUM NANOPARTICLES, CARBON, CATALYSTS, 2-PROPANOL, REDUCTION, XPS
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

In this study, platinum nanoparticles have been prepared using PtCl4 as a starting material and 1-hexylamine, N-methylhexylamine, N,N-dimethylhexylamine, 1-heptylamine, N-methylheptylamine, and N, N-dimethylheptylamine as surfactants. All these surfactants were used in this synthesis, for the first time, to explore the effect of primary, secondary, and tertiary amine and chain length on the size and catalytic activity toward C1-C3 alcohol electro-oxidation. The electrochemical performance of all catalysts was determined using cyclic voltammetry and chronoamperometry. These techniques indicate that the highest electrocatalytic performance was generally observed when electrochemical surface area (ECSA), percent platinum utility, roughness factor, and the number of CH3 groups attached to the nitrogen atom is higher and the chain length shorter (C6H13). In addition, other important properties such as the crystal structure of platinum, size, and distribution of the platinum nanoparticles on the carbon support, and Pt(0) to Pt(IV) ratio, were determined using X-ray photoelectron spectroscopy, X-ray diffraction, atomic force microscopy, and transmission electron microscopy. It was found that increasing ECSA, Pt(0)/Pt(IV) ratio, % Pt utility, and roughness factor improves the C1-C3 alcohol oxidation catalytic performance.