Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa, 32000, Israel.
Current address of T.-A. Le: Faculty of science and engineering, Åbo Akademi University, Turku, 20500, Finland.
ChemSusChem. 2022 Sep 7;15(17):e202200804. doi: 10.1002/cssc.202200804. Epub 2022 Jul 29.
Solar-driven photocatalytic generation of hydrogen from water is a potential source of clean and renewable fuel. Yet systems that are sufficiently stable and efficient for practical use have not been realized. Here, nanorod photocatalysts that have proven record activity for the water reduction half reaction were successfully combined with molecular metallocorroles suitable for catalyzing the accompanying oxidation reactions. Utilization of OH /⋅OH redox species as charge transfer shuttle between freely mixed metallocorroles and rods resulted in quantum efficiency that peaked as high as 17 % for hydrogen production from water in the absence of sacrificial hole scavengers. While typically each sacrificial scavenger is able to extract but a single hole, here the molecular metallocorrole catalysts were found to successfully handle nearly 300,000 holes during their lifespan. The implications of the new system on the prospects of realizing practical overall water splitting and direct solar-to-fuel energy conversion were discussed.
利用太阳能光催化分解水制氢是一种有潜力的清洁可再生燃料来源。然而,目前还没有开发出足够稳定和高效的系统来实际应用。在这里,我们成功地将已被证明对水还原半反应具有高活性的纳米棒光催化剂与适合催化伴随氧化反应的分子金属卟啉配合物结合在一起。利用 OH/⋅OH 氧化还原物种作为自由混合的金属卟啉配合物和纳米棒之间的电荷转移穿梭体,在没有牺牲空穴清除剂的情况下,光解水制氢的量子效率最高可达 17%。虽然通常每个牺牲性清除剂只能提取一个空穴,但在这里发现,分子金属卟啉配合物催化剂在其寿命期间能够成功处理近 30 万个空穴。讨论了新体系对实现实际的整体水分解和直接太阳能到燃料能量转换的前景的影响。
Nano Lett. 2016-2-3
Acc Chem Res. 2013-3-26
Acc Chem Res. 2009-12-21
Nanomaterials (Basel). 2022-9-25
Acc Chem Res. 2016-4-14
Nanomaterials (Basel). 2023-5-8
Nanomaterials (Basel). 2022-9-25
Angew Chem Int Ed Engl. 2022-6-13
Chem Soc Rev. 2022-2-21
Angew Chem Int Ed Engl. 2021-5-3
Sci Rep. 2019-2-19
Angew Chem Weinheim Bergstr Ger. 2016-2-12
Nano Lett. 2016-2-3
Angew Chem Int Ed Engl. 2016-2-12