Synthesis, utilization, and recycling of graphene oxide-based nanohybrid biopolymeric hydrogels for purification of dye wastewater oleh Omera Sarwar, Ruba Munir, Nageen Mushtaq, Hina Ambreen, Muhammad Zeeshan Bashir, Maryam Sana, Amna Muneer, Murtaza Sayed, Saima Noreen