We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Overcoming small-bandgap charge recombination in visible and NIR-light-driven hydrogen evolution by engineering the polymer photocatalyst structure.
- Authors
Elsayed, Mohamed Hammad; Abdellah, Mohamed; Alhakemy, Ahmed Zaki; Mekhemer, Islam M. A.; Aboubakr, Ahmed Esmail A.; Chen, Bo-Han; Sabbah, Amr; Lin, Kun-Han; Chiu, Wen-Sheng; Lin, Sheng-Jie; Chu, Che-Yi; Lu, Chih-Hsuan; Yang, Shang-Da; Mohamed, Mohamed Gamal; Kuo, Shiao-Wei; Hung, Chen-Hsiung; Chen, Li-Chyong; Chen, Kuei-Hsien; Chou, Ho-Hsiu
- Abstract
Designing an organic polymer photocatalyst for efficient hydrogen evolution with visible and near-infrared (NIR) light activity is still a major challenge. Unlike the common behavior of gradually increasing the charge recombination while shrinking the bandgap, we present here a series of polymer nanoparticles (Pdots) based on ITIC and BTIC units with different π-linkers between the acceptor-donor-acceptor (A-D-A) repeated moieties of the polymer. These polymers act as an efficient single polymer photocatalyst for H2 evolution under both visible and NIR light, without combining or hybridizing with other materials. Importantly, the difluorothiophene (ThF) π-linker facilitates the charge transfer between acceptors of different repeated moieties (A-D-A-(π-Linker)-A-D-A), leading to the enhancement of charge separation between D and A. As a result, the PITIC-ThF Pdots exhibit superior hydrogen evolution rates of 279 µmol/h and 20.5 µmol/h with visible (>420 nm) and NIR (>780 nm) light irradiation, respectively. Furthermore, PITIC-ThF Pdots exhibit a promising apparent quantum yield (AQY) at 700 nm (4.76%). Designing an organic polymer photocatalyst for efficient hydrogen evolution in the near-infrared (NIR) light region is still a major challenge. The authors present here a series of polymer nanoparticles for a efficient hydrogen evolution under visible and NIR light irradiation, without combining or hybridizing with other materials.
- Subjects
POLYMER structure; IRRADIATION; HYDROGEN evolution reactions; HYDROGEN; VISIBLE spectra; CHARGE transfer; POLYMERS
- Publication
Nature Communications, 2024, Vol 15, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-024-45085-6