Cationic polymer-immobilized polysulfone-based fibers as high performance sorbents for Pt(IV) recovery from acidic solutions

- Polysulfone-based fibers were developed by a novel and simple method.
- The maximum Pt(IV) uptake of PEI-PSBF was 6.6 times higher than of PSBF.
- The PEI-PSBF has high acidic-tolerance.
- Pt(IV) from loaded PEI-PSBF can be recovered using acidified thiourea as eluent.