Electrocatalysis platinum nanoparticles

Solla-Gullon J, Vidal-Iglesias FJ, Rodriguez P, Herrero E, Feliu JM, Aldaz A. 2005. Shape-dependent electrocatalysis CO monolayer oxidation at platinum nanoparticles. Paper presented at Meeting ECS, May 15-20, 2005, Quebec City. 

M. S. El-Deab, and T. Ohsaka, Electrocatalysis by nanoparticles Oxygen reduction on gold nanoparticles-electrodeposited platinum electrodes, J. Electroanal. Chem. 553, 107-115 (2003). 

Shao MH, Peles A, Shoemaker K (2011) Electrocatalysis on platinum nanoparticles particle size effect on oxygen reduction reaction activity. Nano Lett 11(9) 3714—3719... 

Guilminot E, Gavillon R, Chatenet M, Berthon-Fabry S, Rigacci A, Budtova T (2007) New nanostructured carbons based on porous cellulose elaboration, pyrolysis and use as platinum nanoparticles substrate for oxygen reduction electrocatalysis. Journal of Power Sources 185 717-726. 

The change of the nature of the catalytic material can indeed allow the modification of these characteristics, hut also the control of the structure and of the morphology of platinum - in terms of crystalUte size, exposed surface domains, internal strains, etc. For these reasons, and also in order to decrease the amount of the noble metal, platinum is used for electrocatalysis as nanoparticles dispersed on a high surface area electronic conductive carbon powder (carbon nanograins, carbon nanotubes, carbon nanofibers, etc.), as shown in Fig. 9.7. 

Vidal-lglesias, F.J., Solla-Gullon, J., Rodriguez, P., Herrero, E., Montiel, V., Feliu, J.M. and Aldaz, A. (2004) Shape-dependent electrocatalysis ammonia oxidation on platinum nanoparticles with preferential (100) surfaces. Electrochemistry Communications, 6,1080. 

E25.17 Electrocatalysts are compounds that are capable of reducing the kinetic barrier for electrochemical reactions (barrier known as overpotential). While platinum is the most efficient electrocatalyst for accelerating oxygen reduction at the fuel cell cathode, it is expensive (recall Section 25.18 Electrocatalysis). Current research is focused on the efficiency of a platinum monolayer by placing it on a stable metal or alloy clusters your book mentions the use of the alloy PtsN. An example would be a platinum monolayer fuel-cell anode electrocatalyst, which consists of ruthenium nanoparticles with a sub-monolayer of platinum. Other areas of research include using tethered metalloporphyrin complexes for oxygen activation and subsequent reduction. 

Sasaki K, Kuttiyiel KA, Su D, Adzic RR (2011) Platinum monolayer IrFe core-shell nanoparticle electrocatalysts for the oxygen reduction reaction. Electrocatalysis 2 134-140... 

Xiao F, Mo Z, Zhao F, Zeng B (2008) Ultrasonic-electrodeposition of gold-platinum alloy nanoparticles on multi-walled carbon nanotubes-ionic liquid composite film and their electrocatalysis towards the oxidation of nitrite. Electrochem Commnn 10 1740-1743... 

Knupp SL, Vukmirovic MB, Haidar P, Herron JA, Mavrikakis M, Adzic RR (2010) Platinum monolayer electrocatalysts for O2 reduction Pt monolayer on carbon-supported Pdir nanoparticles. Electrocatalysis... 

Carpenter MK, Moylan TE, Kukreja RS, Atwan MH, Tessema MM (2012) Solvothermal synthesis of platinum alloy nanoparticles for oxygen reduction electrocatalysis. J Am Chem Soc... 

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