Mussel-inspired polydopamine functionalized superhydrophilic coconut shells biosorbent for magnetically driven adsorption of methylene blue from aqueous solutions

Key Points

• Methylene blue adsorption reached an efficiency of 95% using the biosorbent developed.
• The biosorbent is based on superhydrophilic coconut shells functionalized with polydopamine.
• Adoption of environmentally friendly materials highlights sustainability in water purification efforts.
• Further validation in real wastewater applications may enhance practical utility.