Starch-based polymer materials as advanced adsorbents for sustainable water treatment: current status, challenges, and future perspectives by Khoo, Pui San, Ilyas, R. A., Uda, M. N. A., Abu Hassan, Shukur, Nordin, A. H., A. S., Norfarhana, Ab Hamid, N. H., A. Rani, M. S., Abral, Hairul, Norrrahim, M. N. F., Knight, V. F., Lee, Chuan Li, S., Ayu Rafiqah