Mechanistic Understanding of Visible-Light-Driven Hydrogen Evolution on Pt Sites in Organic Nanohybrids Enhanced with Hydroxyl Additives

被引：1
|
作者：
Ting, Li-Yu [1 ]
Reyes, Yves Ira A. [2 ]
Li, Bing-Heng [1 ]
Elsayed, Mohamed Hammad [1 ]
Chan, J. Ching-Wen [3 ]
Jayakumar, Jayachandran [1 ]
Chang, Chih-Li [1 ]
Lin, Wei-Cheng [1 ]
Lu, Yu-Jung [3 ]
Coluccini, Carmine [4 ]
Chou, Ho-Hsiu [1 ]
Chen, Hsin-Yi Tiffany [2 ]
机构：
[1] Natl Tsing Hua Univ, Dept Chem Engn, Hsinchu, Taiwan
[2] Natl Tsing Hua Univ, Dept Engn & Syst Sci, Hsinchu, Taiwan
[3] Acad Sinica, Res Ctr Appl Sci, Taipei 11529, Taiwan
[4] China Med Univ, Inst New Drug Dev, Taichung, Taiwan
来源：
ACS APPLIED ENERGY MATERIALS | 2022年 / 5卷 / 07期
关键词：
hydrogen evolution; organic photocatalyst; metal cocatalyst; hydroxyl additives; density functional theory; POLYMER PHOTOCATALYSTS; CONJUGATED POLYMERS; EFFICIENT; FRAMEWORK; GLUCOSE; DOTS;
D O I：
10.1021/acsaem.2c01060
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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.
引用
收藏
页码：7950 / 7955
页数：6
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