Contact
    Start Publications Enhanced Photocatalytic Hydrogen Evolution from Organic Ternary ...
    ←  Publication Finder
    Attension

    Enhanced Photocatalytic Hydrogen Evolution from Organic Ternary Heterojunction Nanoparticles Featuring a Compact Alloy-Like Phase

    Year: 2023

    Journal: Advanced Functional Materials, Volume 33, 2023, page 2209643

    Authors: Yang, Yujie; Li, Donghui; Cai, Jinlong; Wang, Hui; Guo, Chuanhang; Wen, Shang; Li, Wei; Wang, Tao; Liu, Dan

    Keywords: alloy; heterojunction nanoparticles; hydrogen evolution; photocatalysis; ternary strategy

    Organic semiconductor nanoparticles (NPs) are attractive photocatalysts to produce hydrogen from water splitting. Herein, a ternary strategy of incorporating crystalline n-type molecule IDMIC-4F into the host system made of p-type polymer PM6 and n-type molecule ITCC-M is demonstrated. ITCC-M and IDMIC-4F form compact alloy-like composite with shorter lattice spacing in the ternary p/n heterojunction NPs, resulting in enhanced exciton dissociation and charge transfer characteristics. As the result, an unprecedented hydrogen evolution rate (HER) of 307 mmol h−1 g−1 and a maximum apparent quantum efficiency of 5.9% at 600 nm are achieved in the optimized ternary NPs (PM6:ITCC-M:IDMIC-4F = 1:1.3:0.2), which is among the highest HER from organic photocatalysts to the best of the authors’ knowledge. The alloy-like composite also improves the operational stability of ternary NP photocatalysts. This study shows that synergizing two compatible n-type small molecules to form alloy-like composite is a promising approach to design novel organic photocatalysts for boosting the photocatalytic hydrogen evolution efficiency.
    View publication