Details

Autor(en) / Beteiligte

• 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

Titel

Overcoming small-bandgap charge recombination in visible and NIR-light-driven hydrogen evolution by engineering the polymer photocatalyst structure

Ist Teil von

• Nature communications, 2024-01, Vol.15 (1), p.707-13, Article 707

Ort / Verlag

London: Nature Publishing Group UK

Erscheinungsjahr

2024

Quelle

Electronic Journals Library

Beschreibungen/Notizen

• 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.