Facile synthesis of porous graphene-like carbon nitride (C6N9H3) with excellent photocatalytic activity for NO removal.

We reported the possible synthesis of a new porous graphene-like carbon nitride (C 6 N 9 H 3 ) by simply adding hydrochloric acid in the precursor of block g-C 3 N 4 . The formation of the porous graphene-like C 6 N 9 H 3 can be attributed to the change in the thermal condensation modal of the precursor and the acidic condition induced by Cl − and H + . The photocatalytic activity of the samples was evaluated by the removal of NO under visible light illumination. We found that the porous graphene-like C 6 N 9 H 3 exhibited enhanced photocatalytic activity compared to the block g-C 3 N 4 . We also researched the removal mechanism and found that the removal of NO in our systems was due to the synergic effect of h + and O 2 − . This study could shed light on the design of efficient photocatalysts and facilitate a deep understanding of the NO removal mechanism through photocatalytic technology. [ABSTRACT FROM AUTHOR]