The pH of the catalytic system certainly has a significant effect on the catalytic performance since both the driving force to reduce protons and the catalytic mechanism can be affected by the presence of protons and the protic activity . DEA and ascorbate are the two SDs that have been commonly used in the majority of the literature for photocatalysis with PFBT Pdots and therefore chosen in this study. DEA was reported at a basic condition, while ascorbate was reported at an acidic condition . Therefore, we first compared the photocatalytic hydrogen production of PFBT Pdots with different residual Pd, at these two conditions.