Abstract
The preparation of the composite graphite–sulphonated polyaniline (SPANI)–Ni-cyclam was investigated with the purpose of dispersing a catalyst in a conducting matrix that allows a better electronic transfer from the surface of the electrode towards the reaction site. The graphite is a material with a high porosity, big area and cheaper than other materials. The electrochemical and morphological characterisations show that the best conditions for obtaining SPANI over graphite were reached with an anodic limit of 1,000 mV in H2SO4. The deposit of the Ni-cyclam over graphite–SPANI in basic medium allows the formation of a spongy and open material, which permits better accessibility to the catalytic sites, showing good catalytic properties. These results illustrate that the importance relays on the morphology and dispersion of the catalyst and not on the amount of catalytic material present in the composite. The electrocatalytical properties Ni-cyclam over graphite–SPANI was studied for the methanol oxidation in basic medium.
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Malinauskas A (1999) Synth Met 107:75 doi:10.1016/S0379-6779(99)00170-8
Pandey RK, Suresh KA, Lakshminarayanan B (2007) J Colloid Interface Sci 315:528 doi:10.1016/j.jcis.2007.07.044
Tang LH, Zhu YH, Xu LH, Yang XL, Li CZ (2007) Talanta 73:438 doi:10.1016/j.talanta.2007.04.008
Lipkowski J, Ross PN (1994) Electrochemistry of novel materials. Frontiers of Electrochemistry. Wiley, Hoboken
Laborde H, Lèger JM, Lamy C (1994) J Appl Electrochem 24:1019
Focke WW, Wnek GE, Wei Y (1987) J Phys Chem 91:5813 doi:10.1021/j100306a059
Karyakin AA, Vuki M, Lukachov LV, Karyakin EE, Orlov AV, Karpacheva GP et al (1999) Anal Chem 71:2534 doi:10.1021/ac981337a
Mažeikienè R, Niaura M (2003) Synth Met 139:89 doi:10.1016/S0379-6779(03)00037-7
Lee JY, Cui CQ (1996) J Electroanal Chem Interfacial Electrochem 403:109
Mu S (2004) Synth Met 143:259 doi:10.1016/j.synthmet.2003.12.008
Zhang J, Shan D, Mu S (2006) Electrochim Acta 51:4262 doi:10.1016/j.electacta.2005.12.005
Bett JS, Kunz HR, Aldykiewicz AJ Jr, Fenton JM, Bailey WF, McGrath DV (1998) Electrochim Acta 43:3645 doi:10.1016/S0013-4686(98)00122-4
Manriquez J, Gutiérrez-Granados S, Alatorre-Ordaz A, Bedioni F (1999) Anal Chim Acta 378:161 doi:10.1016/S0003-2670(98)00564-9
González-Fuentes MA, Manríquez J, Gutiérrez-Granados S, Alatorre-Ordaz A, Godinez LA (2005) Chem Commun (Camb) 31:898 doi:10.1039/b412442a
Vilchez F, Gutiérrez Granados S, Alatorre Ordaz A, Galicia L, Herrasti P (2008) J Electroanal Chem Interfacial Electrochem 614:8
Lee JY, Cui CQ, Su XH (1993) J Electroanal Chem Interfacial Electrochem 360:177
Motheo AJ, Santos JR, Venancio EC, Mattoso LHC (1998) Polymer (Guildf) 39:6977 doi:10.1016/S0032-3861(98)00086-X
Barbero C, Miras MC, Schnyder B, Haas O, Kotz R (1994) J Mater Chem 4:1775 doi:10.1039/jm9940401775
Roslonek G, Taraszewska J (1992) J Electroanal Chem Interfacial Electrochem 325:285
Acknowledgements
Authors acknowledge to the Banco de Santander-UAM project 2007 and Consejo nacional de Ciencia y Tecnología (Mexico) project 53009 for the economic support and F. Vilchez is grateful to the same organisation for the grant obtained.
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Vilchez, F., Alatorre Ordaz, A., Galicia, L. et al. Morphological and electrochemical characterisation of graphite electrodes coated with SPANI and Ni-cyclam. J Solid State Electrochem 13, 861–867 (2009). https://doi.org/10.1007/s10008-008-0622-3
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DOI: https://doi.org/10.1007/s10008-008-0622-3