  Electrooxidation is an attractive technique that can be effectively applied
for the treatment of persistent organic contaminants, but its implementation in
practice is limited by the lack of efficient and low cost anode material that
would not lead to the generation of chlorinated by products. Herein, we
developed a novel anode based on TiO2 nanotube array NTA coated with Mo-doped
MnxOy, and applied it for electrooxidation of persistent organic contaminants.
The Ti TiO2 NTA MnxOyMo anode outperformed the commercial Ti IrOxPt anode and
effectively oxidized organic contaminants, with a significantly reduced
electric energy per order, and avoiding chlorine evolution reaction. Mo doping
played a key role in the excellent performance of the synthesized anode as it
favored the formation of oxygen vacancies in the host lattice and Mn and Mo
species redox couples, which increased the oxidizing power of the anode and
ensured its complete stability.
