Tailoring the synergistic effect of integrated polypyrrole hydrogel on the adsorption activity of rice husk-based activated carbon (polypyrrole/activated carbon composite) for bisphenol-A and 4-chlorophenol: experimental and theoretical analysis - Farhan, Amna M.; Khaled, Eman S. H.; Abdel-Khalek, Ahmed A.; El-Sherbeeny, Ahmed M.; Al Zoubi, Wail; Abukhadra, Mostafa R. (Frontiers in Bioengineering and Biotechnology, 2025)