Pulsed discharge plasma assisted with Z-scheme graphene-TiO2-MnFe2O4 for simultaneous removal of atrazine and Cr (VI): Performance and mechanism

•PDP can simultaneously remove atrazine and Cr (VI) in water.•Z-scheme GTM photocatalyst can be induced by PDP to enhance ATZ and Cr (VI) removal.•The highest removal efficiency of ATZ and Cr (VI) reached 96.2% and 79.8% in PDP system with GTM-5, respectively.•A mechanism of redox performance improvement in PDP synergic GTM system was proposed.•The degradation pathway of ATZ was proposed based on intermediates and the ecotoxicity was assessed.