Single walled carbon nanotubes with encapsulated Pt(II) photocatalyst for the oxidation of sulfides in water

•Encapsulation of Pt(II)-quinolinate complex at single walled carbon nanotubes.•Heterogeneous photocatalyst for the selective oxidation of sulfides in water.•Hybrid catalyst with broad structural scope tolerance.•High affinity for polycondensed aromatics substrates.•Catalyst with full recyclability and negligible Pt leaching.