Herein, we report visible-light-induced hydrogen generation from aqueous protons utilizing a novel hybrid photocatalytic nanomaterial comprising porphyrin-carbon dot conjugates. Amide coupling between metallated tetra-carboxyphenyl porphyrins (MTCPPs) and nitrogen doped carbon dots (NCDots) was performed to afford M-TCPP-NCDots hybrids, which were applied in hydrogen evolution photocatalysis under visible irradiation. H₂ was obtained in the presence of appropriate sacrificial electron donors and with no additional metallic co-catalysts. It is noteworthy that the covalent attachment as well as the zinc-metallation of the porphyrin moiety were proved vital for the efficiency of the present system. The present study constitutes an innovative approach for artificial photosynthesis avoiding the use of costly materials such as noble metals.

中文翻译：

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基于卟啉-碳点共轭物的水溶性光催化剂在可见光照射下产生 H2


在此，我们报道了利用包含卟啉-碳点共轭物的新型杂化光催化纳米材料从水性质子产生可见光诱导的氢。金属化四羧苯基卟啉 （MTCPPs） 和氮掺杂碳点 （NCDots） 之间的酰胺偶联得到 M-TCPP-NCDots 杂化物，其应用于可见光照射下的析氢光催化。H₂ 是在适当的牺牲电子供体存在且没有额外的金属助催化剂的情况下获得的。值得注意的是，卟啉部分的共价连接和锌金属化被证明对当前系统的效率至关重要。本研究构成了一种人工光合作用的创新方法，避免了使用昂贵的材料，如贵金属。