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Updated: Jun 10, 2026

Solar-Driven Electrochemical Green Fuel Production from CO2 and Water Using Ti3C2Tx MXene-Supported CuZn and NiCo Catalysts
Published on: November 7, 2025
A charge transfer highway for directed electron migration and local enrichment in Co@ZnIn2S4/UiO-66 toward
Xi Lin1, Runyu Liu1, Jinqing Zhang2
1School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, PR China.
Abstract:
The development of efficient photocatalysts for solar-driven H2 evolution relies on precise charge management. A novel ternary heterojunction photocatalyst, 1%Co@ZnIn2S4/UiO-66 (1%Co@ZU), was synthesized through a collaborative sequential self-assembly and photodeposition strategy. In photocatalytic water splitting for H2 evolution, 1%Co@ZU achieved a H2 evolution rate of 46.40 mmol·g-1·h-1, with apparent quantum efficiency (AQE) of 86.32% at 420 nm. An S-scheme heterojunction between UiO-66 (UiO) and ZnIn2S4 (ZIS) promoted efficient charge separation. CoS bonds directed the rapid transfer of electrons from ZIS to Co. Electrons were enriched on Co sites, and the energy barrier was reduced quickly. The optimal free energy of H* adsorption (ΔGH⁎) was 0.14 eV. This study demonstrates the crucial role of band alignment and interface design in high-performance photocatalytic systems for application in H2 evolution and other energy conversion fields.
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