Mistry Jai-Ram, McQueen Ewan, Nudelman Fabio, Sprick Reiner Sebastian, Wright Iain A
Department of Chemistry, Loughborough University Epinal Way Loughborough Leicestershire LE11 3TU UK.
Department of Pure and Applied Chemistry, University of Strathclyde Thomas Graham Building, 295 Cathedral Street Glasgow G1 1XL UK
J Mater Chem A Mater. 2024 Aug 12;12(35):23411-23415. doi: 10.1039/d4ta03584d. eCollection 2024 Sep 10.
Photocatalyst systems combining donor polymers with acceptor molecules have shown the highest evolution rates for sacrificial hydrogen production from water for organic systems to date. Here, new donor molecules have been designed and synthesised taking inspiration from the structure-performance relationships which have been established in the development of non-fullerene acceptors. While a conventional bulk heterojunction (BHJ) pairing consists of a donor polymer and acceptor small molecule, here we have successfully reversed this approach by using new p-type small molecules in combination with a n-type conjugated polymer to produce non-conventional BHJ (ncBHJ) nanoparticles. We have applied these ncBHJs as photocatalysts in the sacrificial hydrogen evolution from water, and the best performing heterojunction displayed high activity for sacrificial hydrogen production from water with a hydrogen evolution rate of 22 321 μmol h g which compares well with the state-of-the-art for conventional BHJ photocatalyst systems.
迄今为止，将供体聚合物与受体分子相结合的光催化剂体系在有机体系中从水中进行牺牲性产氢方面展现出了最高的产氢速率。在此，借鉴在非富勒烯受体开发过程中建立的结构-性能关系，设计并合成了新型供体分子。传统的本体异质结（BHJ）由供体聚合物和受体小分子组成，而在此我们通过将新型p型小分子与n型共轭聚合物结合，成功逆转了这种方法，制备出非常规的BHJ（ncBHJ）纳米颗粒。我们已将这些ncBHJ用作光催化剂，用于从水中进行牺牲性析氢，性能最佳的异质结在从水中进行牺牲性产氢时表现出高活性，产氢速率为22321 μmol h g，与传统BHJ光催化剂体系的现有技术水平相比具有优势。
