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Designing novel 0D/2D/2D hierarchical heterojunction for enhanced photocatalytic hydrogen evolution

Author

Listed:
  • Wang, Yanhong
  • Wang, Kui
  • Li, Guifang
  • Fang, Huiping
  • Xing, Chuang
  • Lu, Peng
  • Jia, Lishan

Abstract

Integrating S-scheme and Schottky junctions in a 0D/2D/2D architecture is crucial for fully levering the synergy between nanostructure and interface properties. Herein, we construct 0D/2D NiS2@LaCO3OH heterostructure via combined top-down and bottom-up reconstruction of LaNiO3, then fabricate 0D/2D/2D NiS2@LaCO3OH/g-C3N4 hierarchical heterostructure through mechanical mixing. The design encapsulates 0D/2D NiS2@LaCO3OH within 2D g-C3N4, enhancing light trapping and interfacial contact. Moreover, the S-scheme and Schottky coupling further facilitates charge transfer while lowering HER overpotential, significantly boosting photocatalytic efficiency. The optimized NiS2@LaCO3OH(0.5)/g-C3N4 achieves 3421.6 μmol g−1 h−1 H2 evolution rate with an impressive apparent quantum yield. This study offers practical guidance for rational heterojunction design via bulk reconstruction.

Suggested Citation

  • Wang, Yanhong & Wang, Kui & Li, Guifang & Fang, Huiping & Xing, Chuang & Lu, Peng & Jia, Lishan, 2026. "Designing novel 0D/2D/2D hierarchical heterojunction for enhanced photocatalytic hydrogen evolution," Renewable Energy, Elsevier, vol. 270(C).
    • Handle: RePEc:eee:renene:v:270:y:2026:i:c:s0960148126007597
    DOI: 10.1016/j.renene.2026.125933
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