Metrika članka

  • citati u SCindeksu: 0
  • citati u CrossRef-u:0
  • citati u Google Scholaru:[=>]
  • posete u poslednjih 30 dana:8
  • preuzimanja u poslednjih 30 dana:6
članak: 4 od 5  
Back povratak na rezultate
Zaštita materijala
2016, vol. 57, br. 2, str. 339-345
jezik rada: srpski
vrsta rada: naučni članak
doi:10.5937/ZasMat1602339S


Uticaj postupka sinteze na aktivnost platinskih katalizatora za reakciju elektrooksidacije etanola
aUniverzitet u Beogradu, Institut za hemiju, tehnologiju i metalurgiju - IHTM, Beograd
bUniverzitet Rezšov, Rezšov, Poljska
cUniverzitet u Beogradu, Tehnološko-metalurški fakultet

e-adresa: sanjat@tmf.bg.ac.rs

Projekat

Nov pristup dizajniranju materijala za konverziju i skladištenje energije (MPNTR - 172060)

Sažetak

Platinski katalizatori na ugljeničnoj podlozi su sintetizovani korišćenjem modifikovanog poliol postupka uz primenu mikrotalasnog ili refluks zagrevanja za reakciju elektrooksidacije etanola. Dobijeni katalizatori su karakterisani strukturno i morfološki korišćenjem XRD, STM i TGA tehnika. STM i XRD ispitivanja su pokazala malu veličinu čestica (~3nm), dok je TGA pokazala da je sadržaj metala u katalizatoru 20%. Elektrokatalitička aktivnost sintetizovanih katalizatora je ispitivana potenciodinamičkim merenjima i upoređena sa komercijalnim platinskim katalizatorom (Pt/C-Tanaka). Najbolju aktivnost za elektrooksidaciju etanola pokazao je platinski katalizator sintetizovan uz korišćenje mikrotalasnog zagrevanja. Veća aktivnost se može pripisati prednostima mikrotalasnog zagrevanja u toku sinteze jer je dobijen katalizator sa malom veličinom i homogenom di stribucijom čestica.

Ključne reči

platinski katalizatori; poliol postupak; elektrooksidacija etanola; mikrotalasno zagrevanje; refluks

Reference

Ahmadi, T.S., Wang, Z.L., Green, T.C., Henglein, A., El-Sayed, M.A. (1996) Shape-Controlled Synthesis of Colloidal Platinum Nanoparticles. Science, 272(5270): 1924-1925
Almeida, T.S., Kokoh, K.B., de Andrade, A.R. (2011) Effect of Ni on Pt/C and PtSn/C prepared by the Pechini method. International Journal of Hydrogen Energy, 36(6): 3803-3810
Chen, W.X., Lee, J.Y., Liu, Z. (2002) Microwave-assisted synthesis of carbon supported Pt nanoparticles for fuel cell applications. Chemical Communications, (21): 2588-2589
Fievet, F., Lagier, J., Blin, B., Beaudoin, B., Figlarz, M. (1989) Homogeneous and heterogeneous nucleations in the polyol process for the preparation of micron and submicron size metal particles. Solid State Ionics, 32-33: 198-205
Hitmi, H., Belgsir, E.M., Léger, J.-M., Lamy, C., Lezna, R.O. (1994) A kinetic analysis of the electro-oxidation of ethanol at a platinum electrode in acid medium. Electrochimica Acta, 39(3): 407-415
Job, N., Pereira, M.F.R., Lambert, S., Cabiac, A., Delahay, G., Colomer, J., Marien, J., Figueiredo, J.L., Pirard, J. (2006) Highly dispersed platinum catalysts prepared by impregnation of texture-tailored carbon xerogels. Journal of Catalysis, 240(2): 160-171
Kinoshita, K., Lundquist, J.T., Stonehart, P. (1973) Potential cycling effects on platinum electrocatalyst surfaces. Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 48(2): 157-166
Kowal, A., Li, M., Shao, M., Sasaki, K., Vukmirovic, M.B., Zhang, J., Marinkovic, N.S., Liu, P., Frenkel, A.I., Adzic, R.R. (2009) Ternary Pt/Rh/SnO2 electrocatalysts for oxidizing ethanol to CO2. Nature Materials, 8(4): 325-330
Lamy, C., Belgsir, E.M., Leger, J.M. (2001) Electrocatalytic oxidation of aliphatic alcohols: Application to the direct alcohol fuel cell (DAFC). Journal of Applied Electrochemistry, 31(7), 799-809
Li, X., Chen, W., Zhao, J., Xing, W., Xu, Z. (2005) Microwave polyol synthesis of Pt/CNTs catalysts: Effects of pH on particle size and electrocatalytic activity for methanol electrooxidization. Carbon, 43(10): 2168-2174
Liu, Z., Lee, J.Y., Han, M., Chen, W., Gan, L.M. (2002) Synthesis and characterization of PtRu/C catalysts from microemulsions and emulsions. Journal of Materials Chemistry, 12(8): 2453-2458
Paulus, U.A., Endruschat, U., Feldmeyer, G.J., Schmidt, T.J., Boennemann, H., Behm, R.J. (2000) New PtRu alloy colloids as precursors for fuel cell catalysts. Journal of Catalysis, 195, 383
Rice, C. (2003) Catalysts for direct formic acid fuel cells. Journal of Power Sources, 115(2): 229-235
Sato, N. (2003) Environmental science and energy technologies of automotive engineering in the 21st century. Oyo Buturi, 72(7), 857-64
Solla-Gullón, J., Rodríguez, P., Herrero, E., Aldaz, A., Feliu, J.M. (2008) Surface characterization of platinum electrodes. Phys. Chem. Chem. Phys., 10(10): 1359-1373
Wang, Q., Sun, G.Q., Jiang, L.H., Xin, Q., Sun, S.G., Jiang, Y.X., Chen, S.P., Jusys, Z., Behm, R.J. (2007) Adsorption and oxidation of ethanol on colloid-based Pt/C, PtRu/C and Pt3Sn/C catalysts: in situ FTIR spectroscopy and on-line DEMS studies. Physical chemistry chemical physics, 9(21): 2686-96
Wang, Y., Zhang, J., Wang, X., Ren, J., Zuo, B., Tang, Y. (2005) Metal Nanoclusters Stabilized with Simple Ions and Solvents-Promising Building Blocks for Future Catalysts. Topics in Catalysis, 35(1-2): 35-41
Weast, R.C., ur. (1966) Handbook of chemistry and physics. Cleveland: Chemical Rubber Publishing
Ye, F., Li, J., Wang, T., Liu, Y., Wei, H., Li, J., Wang, X. (2008) Electrocatalytic Properties of Platinum Catalysts Prepared by Pulse Electrodeposition Method Using SnO2as an Assisting Reagent. Journal of Physical Chemistry C, 112(33): 12894-12898
Yu, W., Tu, W., Liu, H. (1999) Synthesis of Nanoscale Platinum Colloids by Microwave Dielectric Heating. Langmuir, 15(1): 6-9
Zhou, W.J., Zhou, Z.H., Song, S.Q., Li, W.Z., Sun, G.Q., Tsiakaras, P., Xin, Q. (2003) Pt based anode catalysts for direct ethanol fuel cells. Applied Catalysis B Environmental, 46(2): 273
Zhou, Z., Wang, S., Zhou, W., Wang, G., Jiang, L., Li, W., Song, S., Liu, J., Sun, G., Xin, Q. (2003) Novel synthesis of highly active Pt/C cathode electrocatalyst for direct methanol fuel cell. Chem Commun (Camb), (3): 394-5