J. Mater. Sci. Technol. ›› 2025, Vol. 232: 246-256.DOI: 10.1016/j.jmst.2024.12.092

• Research Article • Previous Articles     Next Articles

Construction of S-scheme UiO-66-NH2/Zn0.4Cd0.6S hybrid architectures with strong interfacial interactions triggering efficient photocatalytic H2O2 production, nitrogen fixation, and water splitting

Wei Chena, Shu-Zhen Lina, Zhenjun Songa, Guo-Bo Huanga,*, Min Zhangb,*   

  1. aSchool of Pharmaceutical and Chemical Engineering, Taizhou University, Jiaojiang 318000, China;
    bCollege of Chemical and Material Engineering, Quzhou University, Quzhou 324000, China
  • Received:2024-12-01 Revised:2024-12-28 Accepted:2024-12-30 Published:2025-10-10 Online:2025-03-14
  • Contact: * E-mail addresses: gbhuang973@163.com (G.-B. Huang), mzhang.chemmater@qzc.edu.cn (M. Zhang).

Abstract: Herein, UiO-66-NH2 nanoparticles were solvothermally immobilized onto Zn0.4Cd0.6S nanorods in varying amounts. The resulting UiO-66-NH2/Zn0.4Cd0.6S hybrid architectures demonstrated UiO-66-NH2 content-dependent photocatalytic activity for visible-light-driven hydrogen peroxide (H2O2) production from pure water. Notably, the optimized UiO-66-NH2/Zn0.4Cd0.6S-0.2 catalyst achieved the highest H2O2 yield under visible-light illumination, surpassing those of pure UiO-66-NH2 and bare Zn0.4Cd0.6S by factors of 81.12 and 2.22, respectively. In addition, the UiO-66-NH2/Zn0.4Cd0.6S-0.2 sample exhibited outstanding photocatalytic efficiency, achieving an NH3 concentration of 25.02 ± 0.68 mg L-1 after 1 h of visible-light exposure and an H2 evolution of 487.12 mmol g-1 following 3 h of irradiation. The notable enhancement in the photocatalytic performance was attributed to efficient S-scheme charge transfer, as confirmed by transient absorption spectroscopy. The S-scheme charge migration mechanism in the UiO-66-NH2/Zn0.4Cd0.6S system was further validated by electron paramagnetic resonance, density functional theory calculations, and in situ irradiated X-ray photoelectron spectroscopy. Overall, this study presents a promising strategy for designing highly efficient hybrid architectures for photocatalytic applications.

Key words: UiO-66-NH2, Zn0.4Cd0.6S, S-scheme, H2O2 production, Photofixation, Water splitting