| Full text | |
| Author(s): |
Júlio César M. Silva
[1]
;
Beatriz Anea
[2]
;
Rodrigo Fernando B. De Souza
[2]
;
Mônica Helena M. T. Assumpção
[4]
;
Marcelo L. Calegaro
[4]
;
Almir O. Neto
[5]
;
Mauro C. Santos
[2]
Total Authors: 7
|
| Affiliation: | [1] Universidade Federal do ABC. Centro de Ciências Naturais e Humanas. Laboratório de Eletroquímica e Materiais Nanoestruturados - Brasil
[2] Univ Fed ABC, Ctr Ciencias Nat & Humanas, Lab Eletroquim & Mat Nanoestruturados, BR-09210170 Santo Andre, SP - Brazil
[3] Universidade Federal do ABC. Centro de Ciências Naturais e Humanas. Laboratório de Eletroquímica e Materiais Nanoestruturados - Brasil
[4] Univ Sao Paulo, Inst Quim Sao Carlos, Grp Mat Eletroquim & Metodos Eletroanalit, BR-13566590 Sao Carlos, SP - Brazil
[5] Inst Pesquisas Energet & Nucl Comissao Nacl Energ, BR-05508900 Sao Paulo - Brazil
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | Journal of the Brazilian Chemical Society; v. 24, n. 10, p. 1553-1560, 2013-10-00. |
| Abstract | |
In this work, the ethanol oxidation reaction (EOR) was investigated using ternary nanostructured materials composed of IrPtSn/C in mass proportions of Ir:Pt:Sn at 60:30:10, 60:20:20 and 60:10:30, prepared with a polymeric precursor method and compared with commercial electrocatalyst PtSn/C E-TEK. X-ray diffractometry was used to obtain information about the structure of the material. The transmission electron microscopy showed particle sizes of 5-7 nm. The electrocatalytic activity was investigated using chronoamperometry experiments at 0.5 V vs. RHE and by in situ Fourier transform infrared spectroscopy by attenuated total reflectance (FTIR-ATR) experiments. From in situ FTIR-ATR experiments, it can be seen that using the best material IrPtSn/C 60:20:20, the acetaldehyde was produced at high intensities and CO2 at lower intensities. The use of IrPtSn/C 60:20:20 materials became possible to diminish the Pt fraction to ca. 73% in comparison to the PtSn/C E-TEK electrocatalyst, with an improvement of ca. 282% in the current density of the chronoamperometric experiments. (AU) | |
| FAPESP's process: | 05/59992-6 - Materiais nanoestruturados: eletrocatálise e membranas de óxidos |
| Grantee: | Mauro Coelho dos Santos |
| Support Opportunities: | Research Grants - Young Investigators Grants |
| FAPESP's process: | 09/09145-6 - Study of ethanol electrochemical oxidation mechanism on PtSn, PtCe and PtSnCe using in-situ spectroscopic techniques |
| Grantee: | Rodrigo Fernando Brambilla de Souza |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 10/16511-6 - Energy generation from biofuel using nanostructures |
| Grantee: | Mauro Coelho dos Santos |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 10/07831-7 - Synthesis and characterization of PtSn/C, PtIr/C and PtSnIr for the study of the mechanism of ethanol electrochemical oxidation using spectroscopic in situ techniques |
| Grantee: | Júlio César Martins da Silva |
| Support Opportunities: | Scholarships in Brazil - Doctorate |