ELECTROORGANIC REACTIONS ON ORGANIC ELECTRODES .18. ELECTROLYSIS USING COMPOSITE-PLATED ELECTRODES .7. PREPARATION OF ULTRAHYDROPHOBIC ELECTRODES AND THEIR ELECTROCHEMICAL PROPERTIES
Y. Kunugi et al., ELECTROORGANIC REACTIONS ON ORGANIC ELECTRODES .18. ELECTROLYSIS USING COMPOSITE-PLATED ELECTRODES .7. PREPARATION OF ULTRAHYDROPHOBIC ELECTRODES AND THEIR ELECTROCHEMICAL PROPERTIES, Journal of electroanalytical chemistry [1992], 353(1-2), 1993, pp. 209-215
Highly hydrophobic (i.e. ''ultrahydrophobic'') electrodes were prepare
d by composite-plating nickel with fine particles of tetrafluoroethyle
ne oligomer (TFEO). The maximum contact angle with water was 173-degre
es when the composite-plated film contained TFEO in 20 vol.%. An elect
rode composite-plated with fluorocarbon ((CF)n) particles also had a h
igh contact angle, around 125-degrees, even when the content of (CF)n
in the plated film was as low as 8 vol.%. These hydrophobic electrodes
, Ni/TFEO and Ni/(CF)n, were found to give higher current efficiencies
for the oxidation of alcohols, compared with those composite-plated w
ith poly(tetrafluoroethylene) (PTFE), reported previously. However, in
the reduction of benzyl halides, product selectivity was greatly affe
cted by the hydrophobicity of cathodes.