  High oxidation potential indicates anodes have high oxidation power and high
current efficiency for organics oxidation. In this paper, we prepared
Ti/Cu-SnO2 anodes using spray pyrolysis method. The Ti/Cu-SnO2 anodes have an
ultra-high oxidation potential of about 2.7 V vs NHE, suitable for use in
wastewater treatment. The Ti/Cu-SnO2 anodes exhibit the preferred orientation
along (110) plane at high Cu doped concentration. First-principles calculations
suggest that work function of Cu-SnO2 increases with the Cu doping
concentration. It is obtained that the preferred (110) plane and the high work
function are responsible for the enhanced oxidation potential of Ti/Cu-SnO2
anodes.
