US EPA

1449171 

Journal Article 

Electrocatalytic properties of nanocomposites based on conducting polymers and titanium dioxide in oxygen reduction process 

Kurys, YaI; Dodon, OS; Ustavytska, OO; Koshechko, VG; Pokhodenko, VD 

2012 

1 

Russian Journal of Electrochemistry
ISSN: 1023-1935
EISSN: 1608-3342 

48 

11 

1058-1064 

10.1134/S1023193512110092 

WOS:000311332800004 

Electrochemical characteristics and electrocatalytic
properties in the oxygen reduction reaction are studied on hybrid nanocomposites based on
conducting polymers (polyaniline, polypyrrol) doped with phosphomolybdic acid (PMA), and TiO2 and
also their bifunctional analogs containing up to 5 wt % of nanosize platinum. It is found that
the obtained nanocomposites in 0.5 M H2SO4 are capable of reversible electro-chemical redox
transitions (in the range of potentials from -0.6 to 1.0 V vs. Ag/AgCl), in which the main
contribution is provided by the corresponding conducting polymer and dopant (PMA). It is shown
that activity of the studied nanocomposites in the oxygen reduction reaction is caused by the
joint catalytic effect of all their components: the polymer, TiO2, H(3)PMo(12)O(4)0, Pt. 

electrocatalysis; oxygen reduction; nanocomposites; conducting polymers; polyaniline; polypyrrole; 12-phosphomolybdic acid; titanium dioxide