A theoretical study on the electronic and optical properties of M-TiO2/ZnO (M=Li, Na, K, Fe) toward application in photocatalysis. Vietnam j. catal. adsorp. [Internet]. 2024 Jun. 30 [cited 2026 Aug. 27];13(2):79-83. Available from: https://jca.edu.vn/index.php/jca/article/view/2024.035