Characterization of a surface modified carbon cryogel and a carbon supported Pt catalyst
2007
Аутори
Babić, Biljana M.Kaluđerović, Branka V.
Vracar, Ljiljana M.
Radmilović, Velimir
Krstajic, Nedeljko V.
Чланак у часопису
Метаподаци
Приказ свих података о документуАпстракт
A carbon cryogel, synthesized by carbonization of a resorcinol/formaldehyde cryogel and oxidized in nitric acid, was used as catalyst Support for Pt nanoparticles. The Pt/C catalyst was prepared by a modified polyol synthesis method in an ethylene glycol (EG) solution. Characterization by nitrogen adsorption showed that the carbon cryogel support and the Pt/C catalyst were mesoporous materials with high specific surface areas (S-BET GT 400 m(2) g(-1)) and large mesoporous Volumes. X-Ray diffraction of the catalyst demonstrated the successful reduction of the Pt precursor to metallic form. TEM Images of the Pt/C catalyst and Pt particle size distribution showed that the mean Pt particle size was about 3.3 nm. Cyclic voltammetry (CV) experiments at various scan rates (from 2 to 200 mV s(-1)) were pet-formed in 0.5 mol dm(-3) HCIO4 solution. The large capacitance of the oxidized carbon cryogel electrode, which arises from a combination of the double-layer capacitance and pseudocapacitance..., associated with the participation of surface redox-type reactions was demonstrated. For the oxidized carbon cryogel, the total specific capacitance determined by I1/C vs. v(0.5) extrapolation method was found to be 386 F g-l. The hydrogen oxidation reaction at the investigated Pt/C catalyst proceeded as an electrochemically reversible, two-electron direct discharge reaction.
Кључне речи:
carbon cryogel / platinum catalyst / hydrogen oxidation / fuel cellИзвор:
Journal of the Serbian Chemical Society, 2007, 72, 8-9, 773-785
DOI: 10.2298/JSC0709773B
ISSN: 0352-5139
WoS: 000249768600005
Scopus: 2-s2.0-34548415545
Колекције
Институција/група
VinčaTY - JOUR AU - Babić, Biljana M. AU - Kaluđerović, Branka V. AU - Vracar, Ljiljana M. AU - Radmilović, Velimir AU - Krstajic, Nedeljko V. PY - 2007 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3286 AB - A carbon cryogel, synthesized by carbonization of a resorcinol/formaldehyde cryogel and oxidized in nitric acid, was used as catalyst Support for Pt nanoparticles. The Pt/C catalyst was prepared by a modified polyol synthesis method in an ethylene glycol (EG) solution. Characterization by nitrogen adsorption showed that the carbon cryogel support and the Pt/C catalyst were mesoporous materials with high specific surface areas (S-BET GT 400 m(2) g(-1)) and large mesoporous Volumes. X-Ray diffraction of the catalyst demonstrated the successful reduction of the Pt precursor to metallic form. TEM Images of the Pt/C catalyst and Pt particle size distribution showed that the mean Pt particle size was about 3.3 nm. Cyclic voltammetry (CV) experiments at various scan rates (from 2 to 200 mV s(-1)) were pet-formed in 0.5 mol dm(-3) HCIO4 solution. The large capacitance of the oxidized carbon cryogel electrode, which arises from a combination of the double-layer capacitance and pseudocapacitance, associated with the participation of surface redox-type reactions was demonstrated. For the oxidized carbon cryogel, the total specific capacitance determined by I1/C vs. v(0.5) extrapolation method was found to be 386 F g-l. The hydrogen oxidation reaction at the investigated Pt/C catalyst proceeded as an electrochemically reversible, two-electron direct discharge reaction. T2 - Journal of the Serbian Chemical Society T1 - Characterization of a surface modified carbon cryogel and a carbon supported Pt catalyst VL - 72 IS - 8-9 SP - 773 EP - 785 DO - 10.2298/JSC0709773B ER -
@article{ author = "Babić, Biljana M. and Kaluđerović, Branka V. and Vracar, Ljiljana M. and Radmilović, Velimir and Krstajic, Nedeljko V.", year = "2007", abstract = "A carbon cryogel, synthesized by carbonization of a resorcinol/formaldehyde cryogel and oxidized in nitric acid, was used as catalyst Support for Pt nanoparticles. The Pt/C catalyst was prepared by a modified polyol synthesis method in an ethylene glycol (EG) solution. Characterization by nitrogen adsorption showed that the carbon cryogel support and the Pt/C catalyst were mesoporous materials with high specific surface areas (S-BET GT 400 m(2) g(-1)) and large mesoporous Volumes. X-Ray diffraction of the catalyst demonstrated the successful reduction of the Pt precursor to metallic form. TEM Images of the Pt/C catalyst and Pt particle size distribution showed that the mean Pt particle size was about 3.3 nm. Cyclic voltammetry (CV) experiments at various scan rates (from 2 to 200 mV s(-1)) were pet-formed in 0.5 mol dm(-3) HCIO4 solution. The large capacitance of the oxidized carbon cryogel electrode, which arises from a combination of the double-layer capacitance and pseudocapacitance, associated with the participation of surface redox-type reactions was demonstrated. For the oxidized carbon cryogel, the total specific capacitance determined by I1/C vs. v(0.5) extrapolation method was found to be 386 F g-l. The hydrogen oxidation reaction at the investigated Pt/C catalyst proceeded as an electrochemically reversible, two-electron direct discharge reaction.", journal = "Journal of the Serbian Chemical Society", title = "Characterization of a surface modified carbon cryogel and a carbon supported Pt catalyst", volume = "72", number = "8-9", pages = "773-785", doi = "10.2298/JSC0709773B" }
Babić, B. M., Kaluđerović, B. V., Vracar, L. M., Radmilović, V.,& Krstajic, N. V.. (2007). Characterization of a surface modified carbon cryogel and a carbon supported Pt catalyst. in Journal of the Serbian Chemical Society, 72(8-9), 773-785. https://doi.org/10.2298/JSC0709773B
Babić BM, Kaluđerović BV, Vracar LM, Radmilović V, Krstajic NV. Characterization of a surface modified carbon cryogel and a carbon supported Pt catalyst. in Journal of the Serbian Chemical Society. 2007;72(8-9):773-785. doi:10.2298/JSC0709773B .
Babić, Biljana M., Kaluđerović, Branka V., Vracar, Ljiljana M., Radmilović, Velimir, Krstajic, Nedeljko V., "Characterization of a surface modified carbon cryogel and a carbon supported Pt catalyst" in Journal of the Serbian Chemical Society, 72, no. 8-9 (2007):773-785, https://doi.org/10.2298/JSC0709773B . .