화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.37, No.10, 1669-1679, October, 2020
DOI10.1007/s11814-020-0571-9  Export Citation
Electrooxidation of single-carbon molecules by nanostructured Pd-decorated spongy ceria
Zahra Yavari1, 2, †, Mahdi Shafiee Afarani3, Amir Masoud Arabi4, and Meissam Noroozifar5, †
  • 1Department of Chemistry, University of Sistan and Baluchestan, P.O. Box 98135-674, Zahedan, Iran
  • 2Renewable Energies Research Institute, University of Sistan and Baluchestan,, Zahedan, Iran
  • 3Department of Materials Engineering, Faculty of Engineering, University of Sistan and Baluchestan, Zahedan, Iran
  • 4Department of Inorganic Pigments and Glazes, Institute for Color Science and Technology (ICST), Tehran, Iran
  • 5Department of Physical and Environmental Sciences, University of Toronto Scarborough 1265 Military Trail, Toronto, Ontario, M1C 1A4, Canada
E-mail:,
Solution combustion synthesis is proposed to fabricate spongy ceria by using two different fuels for combustion: glycine and urea. As-prepared samples are labeled as SCOGl and SCOUr. The acid-base properties of the cavities and surfaces of specimens are determined by measuring the pH of zero charges. Both SCOGl and SCOUr powders are decorated by the nanostructured Pd (NSPd) by the wetness incorporation. The NSPd-SCOGl and NSPd-SCOUr represent the high mass current density than NSPd as non-supported palladium for the electrooxidation of single-carbon molecules: methanol, formaldehyde and formic acid. The results show that the NSPd-SCOGl and NSPd-SCOUr are exceptional heterogeneous catalysts. The SCO as the support with porous structural network has been affected considerably on the electrochemical surface area, dispersion, and durability of NSPd. On the other hand, it can be effective for removing the poisoning species of the electrooxidation of single-carbon molecules on NSPd through the lattice oxygen, and the activation of an oxidation-reduction cycle between the high and low chemical valences of cerium, leading to improve the electrocatalytic efficiency of NSPd. Finally, it is confirmed the conversion of methanol to formaldehyde, and then to formic acid during electrooxidation by using cyclic voltammetry studies.
Keywords:Single-carbon Molecules;Solution Combustion Synthesis;Methanol;Electrocatalyst;Cerium (IV) Oxide
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