Does anyone knows the material to use as an electrodes in discharging inside liquid? Electrodes must be non-magnetic and shouldn’t pollute the water. Discharge should be accomplished in magnetite nanoparticles contained deionized water. After discharging processed magnetite nanoparticles can be separated by permanent magnet and residual particles etched from electrodes must be decanted with water. Electrods shouldn’t enter in the chemical reaction with constituent of fluid.