Boosting of photocatalytic hydrogen evolution via chlorine doping of polymeric carbon nitride

Chlorine is found to be a suitable element for the modification of polymeric carbon nitride properties towards an efficient visible-light photocatalytic activity. In this study, chlorine-doped (Cl-PCN) has been examined as photocatalyst in hydrogen evolution reaction. The following aspects were enhance efficiency Cl-PCN: (i) unique location Cl atoms at interlayers PCN instead on its π-conjugated planes, (ii) slight bandgap narrowing, (iii) lower recombination rate electron–hole pairs, (iv) improved photogenerated charge transport and separation, (v) higher reducing ability electrons. above factors affected 4.4-fold enhancement comparison pristine catalyst.