Acta Phys. -Chim. Sin. ›› 2025, Vol. 41 ›› Issue (10): 100121.doi: 10.1016/j.actphy.2025.100121

Special Issue: S-scheme heterojunction in photocatalysis

• ARTICLE • Previous Articles     Next Articles

MOF-derived ZnO/PANI S-scheme heterojunction for efficient photocatalytic phenol mineralization coupled with H2O2 generation

Bowen Liu1, Jianjun Zhang2, Han Li3, Bei Cheng1, Chuanbiao Bie2,*()   

  1. 1 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei Province, China
    2 Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430078, Hubei Province, China
    3 School of Automotive Materials, Hubei University of Automotive Technology, Shiyan 442020, Hubei Province, China
  • Received:2025-06-03 Revised:2025-06-13 Accepted:2025-06-15 Published:2025-09-29
  • Contact: Email: biechuanbiao@cug.edu.cn (Chuanbiao Bie)
  • Supported by:
    the National Key Research and Development Program of China(2022YFB3803600); the National Natural Science Foundation of China(22202187); the National Natural Science Foundation of China(U24A2071); the National Natural Science Foundation of China(22278324); the National Natural Science Foundation of China(22361142704); the National Natural Science Foundation of China(U23A20102); Hubei Provincial Natural Science Foundation(2025AFB492); Hubei Provincial Natural Science Foundation(2022CFA001); the Key R&D Program Projects in Hubei Province(2023BAB113)

Abstract:

Complete mineralization of persistent organic pollutants in wastewater remains a formidable challenge. Here, we report the rational design of a ZIF-8-derived ZnO/polyaniline (PANI) S-scheme heterojunction synthesized via in situ oxidative polymerization. Advanced characterizations confirm the S-scheme charge transfer mechanism within the ZnO/PANI heterojunction. The optimized composite achieves complete phenol mineralization within 60 min while concurrently generating H2O2 at a rate of 0.75 mmol∙L−1·h–1 under simulated solar irradiation. Mechanistic studies verify that the S-scheme heterojunction retains strong redox potentials, driving the formation of reactive oxygen species for H2O2 production and phenol degradation. This work establishes a universal design paradigm for MOF-derived inorganic/organic S-scheme heterojunctions, effectively coupling solar-driven energy conversion with environmental remediation.

Key words: Photocatalysis, S-scheme heterojunction, H2O2 production, Phenol degradation, ZnO