期刊
ACS APPLIED ENERGY MATERIALS
卷 5, 期 7, 页码 7950-7955出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.2c01060
关键词
hydrogen evolution; organic photocatalyst; metal cocatalyst; hydroxyl additives; density functional theory
资金
- Ministry of Science and Technology of Taiwan [MOST 111-2628-E-007-009, MOST 111-2622-8-007-011, MOST 110-2636-E-007-020, MOST 110-2622-8-007-015, 108-2112-M-007-023-MY3, 110-2113-M-007-023, 110-2811-M-007-565, MOST-109-2112-M-001-043-MY3, MOST 111-2113-M-007-025]
- National Tsing Hua University [110Q2708E1, 109Q2716E1]
- Academia Sinica [AS-CDA-108-M08]
In this study, the role of Pt metal cocatalyst and hydroxyl additives in the mechanism and activity of hydrogen evolution over the PCBM/PF3T organic nanohybrid was investigated. It was found that the addition of hydroxyl additives improved the hydrogen evolution reaction (HER) performance, achieving up to 70 mmol g(-1) h(-1) (AQY = 2.0%), which is among the best results for an organic HER photocatalyst. The enhanced activity is attributed to the binding of hydroxyl additives to Pt, which facilitates proton adsorption and more efficient H-2 formation. These findings have important implications for future organic photocatalyst designs.
Herein, we investigated the role of Pt metal cocatalyst and hydroxyl additives in the mechanism and activity of hydrogen evolution over the PCBM/PF3T organic nanohybrid. We show, for the first time, the addition of hydroxyl additives to improve the HER performance of the system, recording up to 70 mmol g(-1) h(-1) (AQY = 2.0%), which is among the best for an organic HER photocatalyst. The enhanced activity is explained by the binding of hydroxyl additives to Pt, funneling proton adsorption onto the Pt sites where more efficient H-2 formation occurs thereafter. These insights will be critical for future organic photocatalyst designs.
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