Natural iron-rich tourmalines as effective catalysts for the heterogeneous and homogeneous activation of HCO3−/H2O2 to achieve the degradation of typical dyes

Natural iron-rich tourmalines as effective catalysts for the heterogeneous and homogeneous activation of HCO 3 − /H 2 O 2 to achieve the degradation of typical anionic (MO) and cationic (MB and RhB) dyes.