Preparation of NiFe2O4 Nanoparticles by Solution Combustion Method as Photocatalyst of Congo red. - Hariani, Poedji Loekitowati; Said, Muhammad; Rachmat, Addy; Riyanti, Fahma; Pratiwi, Handayani Citra; Rizki, Widya Twiny (Bulletin of Chemical Reaction Engineering & Catalysis, 2021)