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 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:2025-06-03Revised:2025-06-13Accepted:2025-06-15Published: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)
Cite this article
Bowen Liu, Jianjun Zhang, Han Li, Bei Cheng, Chuanbiao Bie. MOF-derived ZnO/PANI S-scheme heterojunction for efficient photocatalytic phenol mineralization coupled with H2O2 generation[J]. Acta Phys. -Chim. Sin. 2025, 41(10), 100121. doi: 10.1016/j.actphy.2025.100121
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Fig 1
(a) Schematic illustration of the synthesis of ZPx composites. (b, c) TEM images and (d) HRTEM image of the ZP5 composite. (e) HAADF image and EDS elemental mappings of C, N, Zn, and O for the ZP5 composite."
Fig 1
Fig 2
(a) XRD patterns, (b) FTIR spectra, and (c) UV-vis DRS spectra of PANI, ZnO, and ZPx composites. (d) Schematic band structures of PANI and ZnO."
Fig 2
Fig 3
(a) XPS survey spectra of PANI, ZnO, and ZP5. (b–d) High-resolution in situ XPS spectra of (b) C 1s, (c) N 1s, and (d) Zn 2p for PANI, ZnO, and ZP5 measured under dark and 365 nm illumination. (e) Schematic depiction of charge-transfer processes in the S-scheme heterojunction."
Fig 3
Fig 4
Fs-TA spectroscopy of (a) ZnO and (b) ZP5 composite under 325 nm excitation. TA spectra signals of (c, d) ZnO and (e, f) ZP5 composite across fs–ns timescales."
Fig 4
Fig 5
(a) PL spectra of ZnO and the ZP5 composite under 350 nm excitation. (b) EPR spectra of ZnO and the ZP5 composite. (c) Fitted decay kinetics curves of ZnO and the ZP5 composite at 380 nm. (d) Schematic illustrations of photoexcited carrier dynamics in pristine ZnO (left panel) and the ZP5 composite (right panel)."
Fig 5
Fig 6
(a) Photocatalytic H2O2 production yields after 1.5 h and (b) phenol degradation efficiencies after 60 min for ZnO, PANI, and ZPx composites. (c, d) Photocatalytic cycling stability of the ZP5 composite, showing (c) H2O2 production and (d) phenol degradation."
Fig 6
Fig 7
Linear sweep voltammetry curves of (a) PANI, (b) ZnO, and (c) ZP5 composite recorded at various rotational speeds. (d) Koutecky-Levich plots for PANI, ZnO, and ZP5, obtained from RDE measurements in a 0.1 mol∙L−1 Na2HPO4/NaH2PO4 solution with continuous O2 purging at 1.0 V vs. Ag/AgCl."
Fig 7
Fig 8
In situ FTIR spectra of a phenol/H2O mixture adsorbed on the ZP5 composite under (a, c) dark and (b, d) irradiated conditions. Spectra were recorded every 5 min during the 30 min dark adsorption period and every 10 min during the 60 min illumination."
Fig 8
Fig 9
Proposed reaction mechanism for photocatalytic H2O2 generation coupled with phenol mineralization over ZnO/PANI S-scheme heterojunctions."
Fig 9
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