摘要
Conjugated microporous polymers (CMPs) have emerged in recent years as prospective materials for photocatalytic hydrogen production. The most common synthesis method for triazine is ionothermal synthesis at high temperatures (>350 °C), which also requires a large amount of ZnCl <sub>2</sub> , in which CF <sub>3</sub> SO <sub>3</sub> H-catalyzed method was invented to synthesize triphenyl triazine at room temperature. Herein, we reported the synthesis and characterization of two triazine-based conjugated micropores polymers photocatalysts at low temperature via polymerization of triphenyl triazine (TPT) with TPT and pyrene (Py). The TPT-based CMPs show excellent photocatalytic performance and a hydrogen evolution rate of 108.1 and 116.5 µmol h <sup>−1</sup> under visible light for Py-TPT-CMP and TPT-TPT-CMP, respectively, but with low photocatalytic stability. In general, organic polymers add a small amount of platinum to efficiently produce H <sub>2</sub> with high photocatalyst stability. To provide a new opportunity to overcome the low stability, a sulfur doping method using readily available sulfur (S8) has been proposed which was used here for the first time to achieve a highly photocatalyst stability development without the use of noble metals. The as-synthesized polymers after sulfur doped exhibit an enhanced photocatalytic stability which can keep the hydrogen production for a long period of time without loss in the photocatalytic efficiency. Furthermore, our triazine-based CMP materials have interest apparent quantum yield (AQY) values particularly for Py-TPT-CMP and TPT-TPT-CMP which exhibit AQY of 41.9 and 32.38%, respectively at 420 nm, these values are compatible with the highest AQY of organic photocatalysts up to date. This study makes a significant contribution forward for photocatalysis with polymers because it provides excellent HERs and AQYs for the sulfur-doped triazine-based CMPs with high thermal, chemical, and photo stabilities. As well as, this work could give researchers in the field a different opinion on the effect of sulfur-doping.