Study on the adsorption capacity Congo Red of nanocomposite xCoFe2O4 /(1-x)TiO2-5%La. Vietnam j. catal. adsorp. [Internet]. 2021 Oct. 30 [cited 2026 Sep. 22];10(3):1-5. Available from: https://jca.edu.vn/index.php/jca/article/view/2021.041