Efficient Quasi-Homogenous Photocatalysis Enabled by Molecular Nanophotocatalysts with Donor-Acceptor Motif.

Adv Mater

Key Laboratory for Advanced Materials and Institute of Fine Chemicals, Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China.

Published: December 2024

Polymer semiconductors have attracted much attention for photocatalytic hydrogen evolution, but they typically exhibit micrometer-sized particles in water-suspension, causing severe loss in light absorption and exciton recombination. Here a molecular nanophotocatalyst featuring a donor-acceptor motif is presented that solution is processed via a facile stirring nanoprecipitation method assisted by hydrophilic surfactants, enabling an efficient quasi-homogenous hydrogen evolution. In contrast to the original bulk powder (heterogeneous system), these quasi-homogenous nanophotocatalysts exhibit significantly improved light-harvesting, water-wettability, and exciton dissociation, resulting in distinctly enhanced (by four-order-of-magnitude) photocatalytic hydrogen evolution rate. The optimized nanophotocatalysts (4CzPN/DDBAB/SDBS) generate an outstanding hydrogen evolution rate of 116.42 mmol g h and apparent quantum yield of 30.2% at 365 nm, which are among the highest reported for single-junction organic photocatalysts. The scalability of the quasi-homogenous photocatalysts is further demonstrated using a flow-based flash nanoprecipitation (FNP) processing.

Download full-text PDF

Source
http://dx.doi.org/10.1002/adma.202413440DOI Listing

Publication Analysis

Top Keywords

hydrogen evolution
16
efficient quasi-homogenous
8
donor-acceptor motif
8
photocatalytic hydrogen
8
quasi-homogenous photocatalysis
4
photocatalysis enabled
4
enabled molecular
4
molecular nanophotocatalysts
4
nanophotocatalysts donor-acceptor
4
motif polymer
4

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!