A mechanothermal approach for the synthesis of Fe3O4 nanoparticles as dopant on mesoporous TiO2 for electrochemical determination of catechol by Manoj, Devaraj, Gnanasekaran, Lalitha, Rajendran, Saravanan, Jalil, A. A., Siddiqui, Mohammad Nahid, Gracia, F., Soto-Moscoso, Matias