Surfactants electrocatalysis

Y.J. Hu, N.F. Hu, and Y.H. Zeng, Electrochemistry and electrocatalysis with myoglobin in biomembrane-like surfactant-polymer 2C 2N+PA composite films. Talanta 50, 1183-1195 (2000). 

L.W. Wang and N.F Hu, Electrochemistry and electrocatalysis with myoglobin in biomembrane-like DHP-PDDA polyelectrolyte-surfactant complex films. J. Colloid Interface Sci. 236, 166—172 (2001). 

Fig. 34. Schematic presentation of the reaction scheme for heterogeneous electrocatalysis of the second kind catalytic protonation of carbonyl-radical anions by an electrosorbed proton donating surfactant (STR, strychninium).

L.W. Wang and N.F. Hu, Electrochemistry and electrocatalysis with myoglobin in biomembrane-like DHP-PDDA polyelectrolyte-surfactant complex films. J. Colloid Interface Sci. 236,166-172 (2001). Z.H. Dai, X.X. Xu, and H.X. Ju, Direct electrochemistry and electrocatalysis of myoglobin immobilized on a hexagonal mesoporous silica matrix. Anal. Biochem. 332, 23-31 (2004). 

Jiang, X.-E., L-P. Guo, and X.-G. Du (2003). Electrochemistry and electrocatalysis of binuclear cobalt phthalocyaninehexasulfonate-surfactant film modified electrode. Talanta 61(3), 247-256. 

Microelectrodes with high real surface areas and well-defined periodic nanostmctures have recently attracted much interest because of their potential applications in electrocatalysis and electroanalysis [94-96]. These electrode systems can be prepared, using templating techniques, from lyotropic liquid crystalline phases of nonionic surfactants [94,95]. In particular, the normal topology hexagonal (Hj) liquid crystalline phase has been used as a template for the synthesis of mesoporous metal thin films via the electrochemical reduction of metal salts dissolved in the aqueous domain of the liquid crystalline phases [119, 120]. 

These preliminary results are a first demonstration that the shape-selected particles concept may work in a realistic fuel cell environment. Future research will focus on degradation and stability tests of the novel materials as well as their application in other fuel cell types, as for instance direct methanol fuel cells and high-temperature pol)uner electrolyte membrane fuel cells. Moreover, the effect of the surfactant requires special attention, as the surfactant molecules may also influence the electrocatalysis by a ligand effect or an ensemble effect directing the adsorption of reactants to specific surface sites. 

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