A simple surfactant-free electrochemical method is proposed for the preparation of
magnetite nanoparticles using iron as the anode and plain water as the electrolyte. This
study observed the effects of certain parameters on the formation of magnetite nanoparticles
and their mechanism in the system, including the role of OH− ions, the distance between
electrodes and current density. We found that OH− ions play an important role in the
formation of magnetite nanoparticles. Particle size can be controlled by adjusting the current …