The Catalytic Activity Of Manganosite MnO/Activated Carbon For Photo-Degradation Of Synthetic DyeAmir Awaluddin, Erwin Amiruddin, Siti Saidah Siregar and Riska AnggrainiE3S Web Conf., 481 (2024) 03007DOI: https://doi.org/10.1051/e3sconf/202448103007