INVESTIGATING THE PHOTOCATALYTIC DEGRADATION OF EMERGING PHARMACEUTICAL POLLUTANTS IN NIGERIAN SURFACE WATERS USING LOCALLY SOURCED CLAY-BASED NANOMATERIALS. International Journal of Functional Research in Science and Engineering (IJFRSE) , [S. l.], v. 3, n. 4, p. 46–58, 2026. Disponível em: https://www.journalfrse.org/journal/article/view/101.. Acesso em: 13 mar. 2026.