Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P. R. China.
Beilstein J Nanotechnol. 2014 Jul 29;5:1167-74. doi: 10.3762/bjnano.5.128. eCollection 2014.
There is tremendous effort put in the pursuit for cheap and efficient catalysts for photocatalytic hydrogen evolution systems. Herein, we report an active catalyst that uses the earth-abundant element cobalt and water-dispersible sulfonated graphene. The photocatalytic hydrogen evolution activity of the catalyst was tested by using triethanolamine (TEOA) as electron donor and eosin Y (EY) as the photosensitizer under LED irradiation at 525 nm. Hydrogen was produced constantly even after 20 h, and the turnover number (TON) reached 148 (H2/Co) in 4 h with respect to the initial concentration of the added cobalt salts was shown to be 5.6 times larger than that without graphene.
在寻求廉价高效的光催化制氢系统催化剂方面付出了巨大的努力。在此，我们报告了一种使用丰富的钴元素和水分散性磺化石墨烯的活性催化剂。该催化剂的光催化制氢活性是通过使用三乙醇胺（TEOA）作为电子给体和曙红 Y（EY）作为光敏剂，在 525nm 的 LED 照射下进行测试的。在 20 小时后仍能持续产生氢气，且在 4 小时内的周转数（TON）达到 148（H2/Co），与不添加石墨烯相比，初始添加钴盐的浓度增加了 5.6 倍。
