SYNTHESIS, CHARACTERIZATION AND PHOTOACTIVITY EVALUATION OF NITROGEN DOPED TITANIUM DIOXIDE ON METHYLENE BLUE DYE DEGRADATION. FJS [Internet]. 2020 Sep. 12 [cited 2025 Sep. 11];4(3):148-53. Available from: http://www.fjsadmin.fudutsinma.edu.ng/index.php/fjs/article/view/356