Solar Fuels Laboratory, School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore.
Phys Chem Chem Phys. 2013 Nov 14;15(42):18363-6. doi: 10.1039/c3cp53350f.
We report an economic and noble-metal-free artificial photosynthetic system, consisting of g-C3N4 as a photosensitizer and a photocatalyst, and cobaloxime as a co-catalyst, for H2 generation. This system allows for effective electron transfer from excited g-C3N4 to Co(III)(dmgH)2pyCl to generate reduced cobaloxime intermediate species for efficient H2 evolution. Transient fluorescence studies reveal that the presence of cobaloxime and TEOA promotes the population of excited electrons to transfer from g-C3N4, which is responsible for the high photocatalytic activity of this g-C3N4-cobaloxime conjugation system.
我们报告了一种经济且无贵金属的人工光合作用系统，由 g-C3N4 作为光敏剂和光催化剂，以及钴卟啉作为共催化剂组成，用于 H2 的生成。该系统允许从激发态的 g-C3N4 有效地将电子转移到 Co(III)(dmgH)2pyCl，以生成还原的钴卟啉中间物种，从而实现高效的 H2 演化。瞬态荧光研究表明，钴卟啉和 TEOA 的存在促进了激发电子从 g-C3N4 转移的电子的形成，这是该 g-C3N4-钴卟啉共轭体系具有高光催化活性的原因。
