Dual Vacancy Engineering in Alloyed Ga-Zn-Cu-Se Quantum Dots for Photocatalytic 5-Hydroxymethylfurfural to 2,5-Diformylfuran Conversion.

ABSTRACT: Highly -active/-selective photocatalytic biomass conversion is of great importance for achieving remarkable solar-to-chemical conversion. However, serious challenges, e.g., limited photon utilization, high charge recombination, and sluggish/uncontrolled reaction kinetics, remain for further development in this area. Herein, a dual-vacancy-engineering strategy is employed to regulate the Ga-Zn co-doped Ga-Zn-Cu-Se (GZC) quantum dots (QDs) by a cation exchange route utilizing the CuSe template. The optimized GZC QDs exhibit excellent photocatalytic performances for the selective oxidation of 5-hydroxymethylfurfural (HMF) into 2,5-diformylfuran (DFF), with 89% HMF conversion and 91% DFF selectivity. Advanced ex situ/in situ characterizations, together with theoretical calculations, reveal the

SUBMITTER: Guo M 

PROVIDER: S-EPMC12617044 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature