Activating the neutral pH photozymatic activity of g-C3N4 nanosheets through post-synthetic incorporation of Pt.

The catalytic activity of photozymes can be regulated through light irradiation time and intensity, but they still suffer from low activity in physiologically neutral pH (typically, pH < 5). Herein, through simple post-synthetic incorporation of Pt, the neutral pH activity of the g-C3N4 nanosheet (CNNS) was activated. Most importantly, the catalytic activities of Pt@CNNS at pH 4.0 and 7.0 were ∼19- and 4.7-fold higher than that of CNNS at pH 4 (the optimal pH for CNNS).