Chinese Journal of Catalysis ›› 2025, Vol. 72: 24-47.DOI: 10.1016/S1872-2067(24)60257-3
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Han Lia, Wang Wangb,c, Kaiqiang Xud, Bei Chengb,c, Jingsan Xue, Shaowen Caob,c,*(
)
Received:2024-11-21
Accepted:2025-01-11
Online:2025-05-18
Published:2025-05-20
Contact:
*E-mail: swcao@whut.edu.cn (S. Cao).
About author:Shaowen Cao (State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology) was appointed as the young member of the Editorial Board of Chinese Journal of Catalysis in 2017. Professor Shaowen Cao received his B.S. in Geochemistry in 2005 from the University of Science and Technology of China, and his Ph.D. in Materials Chemistry & Physics in 2010 from the Shanghai Institute of Ceramics, Chinese Academy of Sciences. He then worked as a Research Fellow at the School of Materials Science and Engineering, Nanyang Technological University until Feb. 2014. He is now a Professor at State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology. From Mar 2018 to Feb 2020, he was a Visiting Scientist at Max Planck Institute of Colloids and Interfaces. His current research interests include the design and fabrication of photocatalytic materials for energy and environmental applications. He is the author or co-author of more than 150 peer-reviewed scientific papers., with over 22000 citations, an H-index 70 and 26 ESI highly cited papers. He is also one of the “Highly Cited Researchers” from 2018 to 2024 awarded by Clarivate Analytics.
Supported by:Han Li, Wang Wang, Kaiqiang Xu, Bei Cheng, Jingsan Xu, Shaowen Cao. Solar-driven H2O2 production by S-scheme heterojunction photocatalyst[J]. Chinese Journal of Catalysis, 2025, 72: 24-47.
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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(24)60257-3
Fig. 1. The proposed charge migration routes for type-II (a), traditional Z-scheme (b), all-solid-state Z-scheme (c), and S-scheme (d) heterojunction.
Fig. 2. The charge transfers pathway and mechanism of S-scheme heterojunction.
Fig. 3. High-resolution XPS spectra of Zn 2p (a), Cd 3d (b), and C 1s (c). (d) Charge carriers migration mechanism of ZCS@DBTCN S-scheme heterojunction. Reprinted with permission [53]. Copyright 2023, Elsevier.
Fig. 4. (a) Illustration of in situ irradiated KPFM. (b) AFM image of TCN/ HCN. (c) The corresponding height distribution curve. Surface potential distributions of TCN/HCN observed in darkness (d) and under light irradiation (f). (e,g) The corresponding line-scanning in (d) and (f). (h) Schematic of S-scheme charge migration of TCN/HCN. Reprinted with permission [57]. Copyright 2023, Springer Nature.
Fig. 5. 2D mapping TA spectra of pure CdS (a) and CPDB5 (b). TA spectra of CdS (c,d) and CPDB5 (e,f). Reprinted with permission [67]. Copyright 2022, Wiley-VCH.
Fig. 6. TAS decay kinetics of pristine ZnSe QDs at 440 nm (a), COF at 480 nm (b), and ZnSe QDs/COF-10% composite at 550 nm (c). (d) Schematic diagram of the decay routes of photoexcited electrons in a ZnSe QDs/COF-10% S-scheme heterojunction. Reprinted with permission [68]. Copyright 2024, Elsevier.
Fig. 7. EPR spectra of DMPO-?O2? (a) and DMPO-?OH (b) of T, NCZS, and TNZCS40. (c) Schematic of charge migration mechanism of TNZCS heterojunction. Reprinted with permission [70]. Copyright 2023, Wiley-VCH.
Fig. 8. (a) The charge density difference of COF/QDs heterojunction. (b) Schematic of the formation of an internal electric field. Reprinted with permission [74]. Copyright 2024, American Chemical Society.
Fig. 9. (a) Schematic diagram of the synthesis process for the CdS/PT composite. Reprinted with permission [96]. Copyright 2021, Wiley-VCH. (b) Schematic diagram of the synthesis process of MIL-125-NH2@CoFe PBA. Reprinted with permission [97]. Copyright 2023, Wiley-VCH. (c) Illustration of the synthesis process of CeO2/PCN. Reprinted with permission [100]. Copyright 2020, Wiley-VCH. (d) Schematic illustration of the synthetic route of MOF-902@CTF-Th. Reprinted with permission [103]. Copyright 2023, Wiley-VCH.
Fig. 10. (a) Schematic illustration of synthesis process of WO3/g-C3N4. Reprinted with permission [40]. Copyright 2019, Elsevier. (b) Illustration of the synthesis process of PDI-Ala/S-C3N4. Reprinted with permission [111]. Copyright 2021, Editorial Office of Acta Physico-Chimica Sinica. (c) Synthesis diagram of Ni@MOF/BiVO4 heterojunction photocatalyst. Reprinted with permission [112]. Copyright 2022, Wiley-VCH.
Fig. 11. (a) Schematic of the synthesis process of POSS-PDI, p-CN, and p-CN/P-PDI composite. Reprinted with permission [114]. Copyright 2023, Wiley-VCH. (b) Synthetic process of n-CIS, n-CIS/o-CIS and o-CIS. Reprinted with permission [116]. Copyright 2024, Wiley-VCH.
Fig. 12. (a) Reaction pathways for photocatalytic H2O2 generation via the ORR and WOR. (b) The redox potentials for the H2O2 production via the ORR or WOR route.
Fig. 13. (a) Schematic illustration of MBTz via electrostatic attraction method. (b) Band structure of MCS and BTz. (c) Mechanism of photocatalytic H2O2 generation over MBTz20. Reprinted with permission [127]. Copyright 2023, Springer Nature.
Fig. 14. (a) The TA spectrum of TO. (b) The TA spectrum of TBO40. (c) Corresponding fitted TA kinetics of TO-AgNO3 and TBO40 at 395 nm. (d) Schematic diagram of the photoredox reaction in the three-phase system. (e) Photocatalytic H2O2 production activity of the as-obtained samples. Reprinted with permission [130]. Copyright 2022, Wiley-VCH.
Fig. 15. (a) EPR spectra for DMPO-?O2? of the different samples. (b) EPR spectra for DMPO-?OH of the samples. (c) EPR spectra for TEMP-1O2 of the samples. (d) EPR spectra for 1O2 with ?O2? trapping agent (1mM p-BQ) or h+ trapping agent (1mM AO). (e) Photocatalytic H2O2 evolution rate with different trapping agent over ZB-10. (f) Mechanism of photocatalytic H2O2 generation by ZB-10. Reprinted with permission [124]. Copyright 2023, Elsevier.
| Photocatalyst | Reactant medium | Irradiation (nm) | H2O2 yield (μmol g-1 h-1) and durability | Apparent quantum efficiency | Pathway | Ref. |
|---|---|---|---|---|---|---|
| BP/BiOBr | water | 300 W, Xe lamp 420‒780 | 97.2, N/A | N/A | sequential 1e− ORR | [ |
| Bi2S3 @CdS@RGO | O2-saturated IPA aqueous solution (10 vol%) | 300 W, Xe lamp 420‒800 | 70.94, N/A | N/A | sequential 1e− ORR | [ |
| ZnO/WO3 | O2-saturated EtOH aqueous solution (10 vol%) | 300 W, Xe lamp | 6788.0, imperceptible decrease after 4 h for 4 cycles | 12.5% 365 nm | direct 2e− and sequential 1e− ORR | [ |
| TiO2/Bi2O3 | O2-saturated FFA aqueous solution (25 μL/50 mL) | 300 W, Xe lamp 350‒780 | 2875.0, N/A | 1.25% 365 nm | sequential 1e− ORR | [ |
| HT-In2O3/ ZnIn2S4 | O2-saturated EtOH aqueous solution (5 vol%) | 250W, Xe lamp ≥420 | 5716.0, sustained after 4 cycles | N/A | sequential 1e− ORR | [ |
| CdxZn1−xS/ Ni4POM | O2-saturated aqueous solution | LED, 420 | 738.5, maintained over 5 h for 5 cycles | 32.27% 420 nm | sequential 1e− ORR | [ |
| TiO2/In2S3 | O2-saturated EtOH (10 vol%) | 300 W, Xe lamp | 752.0, slight decrease after 4 h for 4 cycles | 3.42% 365 nm | sequential 1e− ORR | [ |
| Bi/BiOBr-CdS | water | 300 W Xe lamp >420 | 346.4, slight decrease after 9 h for 3 cycles | N/A | sequential 1e− ORR and WOR | [ |
| TiO2 NT/ZnIn2S4 | O2-saturated 2Pr-OH (10 vol%) | Xe lamp simulated sunlight | 39120.0, no obvious change after 3 cycles | N/A | sequential 1e− ORR | [ |
| CdS/K2Ta2O6 | ultra-pure water | 300 W Xe lamp >420 | 160.89, slight decrease after 5 h for 5 cycles | N/A | sequential 1e− ORR and WOR, 4e− WOR | [ |
| BiOI/ β-Bi2O3 | HCOOH aqueous solution (5 vol%) | 300 W Xe lamp >420 | 2.7, N/A | N/A | sequential 1e− ORR | [ |
| ZnIn2S4@ BiVO4 | ultra-pure water | 300 W Xe lamp | 1800.0, retained after 4 h for 4 cycles | 5.18% 420 nm | sequential 1e− ORR and WOR, sequential electrons and holes transfer | [ |
| ZnIn2S4@ZnO | O2-saturated methanol aqueous solution (10 vol%) | 300 W Xe lamp | 928.0, retained for 4h for 4 cycles | 5.78% 365 nm | sequential 1e− ORR | [ |
| NiFe-P-8/ GDY-X | pure water | 300W, Xe lamp ≥420 | 674.0, N/A | N/A | sequential 1e− ORR, 4e− WOR | [ |
| WO3/NiS | ultra-pure water | 300 W, Xe lamp 420‒780 | 2590.0, negligible decrease after 12 h for 6 cycles | 4.97% 420 nm | sequential 1e− ORR | [ |
| MnOOH/ BiVO4/Cu2O | O2-saturated water | 420 nm LED light | 112.0, slight decrease after 5 h for 5 cycles | N/A | sequential 1e− ORR | [ |
| Nb2O5@NiS | uultra-pure water | 300 W, Xe lamp AM 1.5G | 240.0, retained for 20 h for 10 cycles | N/A | sequential 1e− ORR and WOR, sequential electrons and holes transfer | [ |
| CuFe2O4/ ZnIn2S4 | O2-saturated EtOH aqueous solution (52.6 vol%) | 350 W Xe lamp >420 | 2545.4, maintained for 5 h for 5 cycles | 8.1 % 400 nm | direct 2e− ORR | [ |
| Cs3PMo12/ carbonized cellulose | O2-saturated ultrapure water | 300 W LED lamp | 1005.0, slight change after 8 cycles | 2.1 % 420 nm | sequential 1e− ORR and WOR, direct 2e− WOR, 4e− WOR | [ |
| BiOCl/ Bi2O2CO3 | O2-saturated HCOOH aqueous solution (10 vol%) | 300 W, Xe lamp simulated sunlight | 2562.95, retained for 3 cycles | N/A | sequential 1e− ORR and WOR | [ |
| SnO2/ Zn3In2S6 | seawater | 300 W Xe lamp | 2610.0, maintained for 90 days (6 days, 23 days, 60 days intervals) | N/A | sequential 1e− ORR and WOR, sequential electrons and holes transfer | [ |
| Bi3TiNbO9/ Bi2S3 | air-saturated pure water | 300 W, Xe lamp AM 1.5G | 810(2).0, no obvious decrease after 13 h for 13 cycles | N/A | sequential 1e− ORR and WOR | [ |
| Bi2MoO6/ InVO4/CeVO4 | O2-saturated EtOH aqueous solution (5 vol%) | 150 W, Xe lamp ≥420 | 85.0, retained for 4 cycles | N/A | sequential 1e− ORR | [ |
| CdS/Bi2WO6 | O2-saturated benzyl alcohol aqueous solution (50 vol%) | 300 W, Xe lamp simulated sunlight | 216760.0, almost unchanged after 20 h for 5 cycles | N/A | sequential 1e− ORR and WOR | [ |
| ZnO/ZnIn2S4 | pure water | 300 W, LED >380 | 897.6, slight decrease after 5 h for 5 cycles | 16.6% 400 nm | sequential 1e− ORR | [ |
Table 1 Inorganic-inorganic S-scheme heterojunction photocatalysts for H2O2 production.
| Photocatalyst | Reactant medium | Irradiation (nm) | H2O2 yield (μmol g-1 h-1) and durability | Apparent quantum efficiency | Pathway | Ref. |
|---|---|---|---|---|---|---|
| BP/BiOBr | water | 300 W, Xe lamp 420‒780 | 97.2, N/A | N/A | sequential 1e− ORR | [ |
| Bi2S3 @CdS@RGO | O2-saturated IPA aqueous solution (10 vol%) | 300 W, Xe lamp 420‒800 | 70.94, N/A | N/A | sequential 1e− ORR | [ |
| ZnO/WO3 | O2-saturated EtOH aqueous solution (10 vol%) | 300 W, Xe lamp | 6788.0, imperceptible decrease after 4 h for 4 cycles | 12.5% 365 nm | direct 2e− and sequential 1e− ORR | [ |
| TiO2/Bi2O3 | O2-saturated FFA aqueous solution (25 μL/50 mL) | 300 W, Xe lamp 350‒780 | 2875.0, N/A | 1.25% 365 nm | sequential 1e− ORR | [ |
| HT-In2O3/ ZnIn2S4 | O2-saturated EtOH aqueous solution (5 vol%) | 250W, Xe lamp ≥420 | 5716.0, sustained after 4 cycles | N/A | sequential 1e− ORR | [ |
| CdxZn1−xS/ Ni4POM | O2-saturated aqueous solution | LED, 420 | 738.5, maintained over 5 h for 5 cycles | 32.27% 420 nm | sequential 1e− ORR | [ |
| TiO2/In2S3 | O2-saturated EtOH (10 vol%) | 300 W, Xe lamp | 752.0, slight decrease after 4 h for 4 cycles | 3.42% 365 nm | sequential 1e− ORR | [ |
| Bi/BiOBr-CdS | water | 300 W Xe lamp >420 | 346.4, slight decrease after 9 h for 3 cycles | N/A | sequential 1e− ORR and WOR | [ |
| TiO2 NT/ZnIn2S4 | O2-saturated 2Pr-OH (10 vol%) | Xe lamp simulated sunlight | 39120.0, no obvious change after 3 cycles | N/A | sequential 1e− ORR | [ |
| CdS/K2Ta2O6 | ultra-pure water | 300 W Xe lamp >420 | 160.89, slight decrease after 5 h for 5 cycles | N/A | sequential 1e− ORR and WOR, 4e− WOR | [ |
| BiOI/ β-Bi2O3 | HCOOH aqueous solution (5 vol%) | 300 W Xe lamp >420 | 2.7, N/A | N/A | sequential 1e− ORR | [ |
| ZnIn2S4@ BiVO4 | ultra-pure water | 300 W Xe lamp | 1800.0, retained after 4 h for 4 cycles | 5.18% 420 nm | sequential 1e− ORR and WOR, sequential electrons and holes transfer | [ |
| ZnIn2S4@ZnO | O2-saturated methanol aqueous solution (10 vol%) | 300 W Xe lamp | 928.0, retained for 4h for 4 cycles | 5.78% 365 nm | sequential 1e− ORR | [ |
| NiFe-P-8/ GDY-X | pure water | 300W, Xe lamp ≥420 | 674.0, N/A | N/A | sequential 1e− ORR, 4e− WOR | [ |
| WO3/NiS | ultra-pure water | 300 W, Xe lamp 420‒780 | 2590.0, negligible decrease after 12 h for 6 cycles | 4.97% 420 nm | sequential 1e− ORR | [ |
| MnOOH/ BiVO4/Cu2O | O2-saturated water | 420 nm LED light | 112.0, slight decrease after 5 h for 5 cycles | N/A | sequential 1e− ORR | [ |
| Nb2O5@NiS | uultra-pure water | 300 W, Xe lamp AM 1.5G | 240.0, retained for 20 h for 10 cycles | N/A | sequential 1e− ORR and WOR, sequential electrons and holes transfer | [ |
| CuFe2O4/ ZnIn2S4 | O2-saturated EtOH aqueous solution (52.6 vol%) | 350 W Xe lamp >420 | 2545.4, maintained for 5 h for 5 cycles | 8.1 % 400 nm | direct 2e− ORR | [ |
| Cs3PMo12/ carbonized cellulose | O2-saturated ultrapure water | 300 W LED lamp | 1005.0, slight change after 8 cycles | 2.1 % 420 nm | sequential 1e− ORR and WOR, direct 2e− WOR, 4e− WOR | [ |
| BiOCl/ Bi2O2CO3 | O2-saturated HCOOH aqueous solution (10 vol%) | 300 W, Xe lamp simulated sunlight | 2562.95, retained for 3 cycles | N/A | sequential 1e− ORR and WOR | [ |
| SnO2/ Zn3In2S6 | seawater | 300 W Xe lamp | 2610.0, maintained for 90 days (6 days, 23 days, 60 days intervals) | N/A | sequential 1e− ORR and WOR, sequential electrons and holes transfer | [ |
| Bi3TiNbO9/ Bi2S3 | air-saturated pure water | 300 W, Xe lamp AM 1.5G | 810(2).0, no obvious decrease after 13 h for 13 cycles | N/A | sequential 1e− ORR and WOR | [ |
| Bi2MoO6/ InVO4/CeVO4 | O2-saturated EtOH aqueous solution (5 vol%) | 150 W, Xe lamp ≥420 | 85.0, retained for 4 cycles | N/A | sequential 1e− ORR | [ |
| CdS/Bi2WO6 | O2-saturated benzyl alcohol aqueous solution (50 vol%) | 300 W, Xe lamp simulated sunlight | 216760.0, almost unchanged after 20 h for 5 cycles | N/A | sequential 1e− ORR and WOR | [ |
| ZnO/ZnIn2S4 | pure water | 300 W, LED >380 | 897.6, slight decrease after 5 h for 5 cycles | 16.6% 400 nm | sequential 1e− ORR | [ |
Fig. 16. (a) TEM image of SCN/T. (b) In situ DRIFTS spectra of photocatalytic H2O2 generation over SCN/T9. Reprinted with permission [155]. Copyright 2023, Elsevier. (c) Schematic diagram of the preparation of CdS/RF. (d) UV-vis DRS of theas-prepared samples. (e) Photocatalytic H2O2 generation activity of different samples. Reprinted with permission [156]. Copyright 2023, Elsevier. (f) Schematic diagram of the synthesis process of TiO2@BTTA. Reprinted with permission [157]. Copyright 2023, Elsevier.
Fig. 17. (a) Schematic diagram of the synthesis of K+/I?-CN/CdSe-D. (b) HRTEM image of 40%K+/I?-CN/CdSe-D. (c) k3-weighted FT-EXAFS of Se foil, SeO2 and 40%K+/I?-CN/CdSe-D. (d) FT-EXAFS R space and k space (inset) fitting curves of 40%K+/I?-CN/CdSe-D. (e) H2O2 generation activity of the samples. Reprinted with permission [158]. Copyright 2024, Wiley-VCH.
Fig. 18. (a) EPR spectra of DMPO-?O2? for the as-prepared samples. (b) EPR spectra of TEMP-1O2 for the as-prepared samples. (c) EPR spectra of DMPO-?OH for different samples. (d) Photocatalytic H2O2 generation rate in the presence of different trapping agents over 20COFIS. (e) Schematic illustration of the pathway for the H2O2 production by 20COFIS. Reprinted with permission [159]. Copyright 2024, Wiley-VCH.
| Photocatalysts | Reactant medium | Irradiation (nm) | H2O2 yield (μmol g-1 h-1) and durability | Apparent quantum efficiency | Pathway | Ref. |
|---|---|---|---|---|---|---|
| S-pCN/WO2.72 | distilled water | 300 W Xe lamp 420-780 | 29.0, N/A | 1.5% 420 nm | N/A | [ |
| Pt/g-C3N4/ BiOBr | deionized water | 300 W Xe lamp >400 | 225.0, N/A | N/A | sequential 1e− WOR | [ |
| ZnO/g‑C3N4 | O2-saturated EtOH aqueous solution (10 vol%) | 300 W Xe lamp >350 | 3860.0, slight decrease after 4 h for 4 cycles | N/A | sequential 1e− ORR | [ |
| ZnO@ Polydopamine | O2-saturated glycol aqueous solution (4 vol%) | 300 W Xe lamp >420 | 2528.5, maintained after 4 h for 4 cycles | 13.96% 365 nm | sequential 1e− ORR | [ |
| PDI-Urea/BiOBr | TC (50 mg/L) and OFLO (10 mg/L) aqueous solution | 300 W Xe lamp 420‒780 | 23.7, N/A | N/A | sequential 1e− ORR | [ |
| ZnO/COF | O2-saturated EtOH aqueous solution (10 vol%) | 300 W Xe lamp AM 1.5G | 2443.0, retained for 4 h for 4 cycles | 13.12% 365 nm | sequential 1e− ORR | [ |
| TiO2/ polydopamine | O2-saturated EtOH aqueous solution (10 vol%) | 300 W Xe lamp | 2120.0, N/A | N/A | N/A | [ |
| Sv-ZIS/CN | O2-saturated IPA aqueous solution (10 vol%) | 300W Xe lamp ≥420 | 1637.7, N/A | N/A | sequential 1e− ORR | [ |
| Fe2O3/B-g-C3N4 | O2-saturated IPA aqueous solution (5 vol%) | 250 W Hg light ≥420 | 729.0, no obvious change after 4 h for 4 cycles | N/A | sequential 1e− ORR, direct 2e− ORR | [ |
| BiOBr/ZIF-8/ZnO | O2-saturated HCOOH aqueous solution (10 vol%) | LED 7 W | 2900.0, slight decrease after 8 h for 4 cycles | N/A | direct 2e− ORR | [ |
| CuInS2/PCN | O2-saturated IPA aqueous solution (5 vol%) | LED 400‒800 | 3119.0, stable for 20 h | 16.0% 420 nm | sequential 1e− ORR | [ |
| TiO2@RF | O2-saturated deionized water | 300 W Xe lamp AM 1.5G | 999.0, slight decrease after 4 cycles | N/A | sequential 1e− ORR | [ |
| PCN/MnS | deionized water | 300 W Xe lamp >420 | 133.9, retained for 5 h for 5 cycles | 8.5% 450 nm | sequential 1e− ORR, and direct 2e− ORR | [ |
| NH2-MIL-125-Ti/WO3-x | water | 300 W Xe lamp | 8.41, N/A | N/A | WOR | [ |
| TiO2/COF | O2-saturated furfuryl alcohol solution (2 mM) | 300 W Xe lamp 350‒780 | 1480.0, no significant decrease after 24 h for 4 cycles | 5.48% 365 nm | sequential 1e− ORR | [ |
| g‑C3N4/Cu2O−Pd | deionized water | 500 W Xe lamp >400 | 16992.5, retained for 8 h for 4 cycles | 3.3% 420 nm | WOR | [ |
| Sulfur-doped CN/TiO2 | O2-saturated deionized water | 300 W Xe lamp | 2128.0, slight decrease after 4 cycles | 0.61% 365 nm | direct 2e− ORR and WOR, sequential 1e− ORR | [ |
| UiO-66(−NH2)/ CuInS2 | O2-saturated EtOH aqueous solution (5 vol%) | 250 W Xe lamp ≥420 | 4073.0, retained for 4 cycles | N/A | sequential 1e− ORR | [ |
| CdS/RF | O2-saturated EtOH aqueous solution (10 vol%) | 300 W Xe lamp >420 | 2136.0, slight decrease after 4 h for 4 cycles | N/A | direct 2e− and sequential 1e− ORR | [ |
| CNQDs/BiOBr | water | 300 W Xe lamp | 28.8, N/A | N/A | sequential 1e− ORR | [ |
| BiOBr/COF | O2-saturated EtOH aqueous solution (10 vol%) | 300 W Xe lamp | 3749.0, slight decrease after 4 h for 4 cycles | N/A | direct 2e− ORR | [ |
| CdS/TpBpy | deionized water | 300 W Xe lamp >420 | 3600.0, slight decrease after 5 h for 5 cycles | 13.4% 380 nm | sequential 1e− ORR and WOR, direct 2e− ORR | [ |
| CdS/TpMA | ultrapure water | 300 W Xe lamp >420 | 1014.0, maintained for 6 h for 4 cycles | N/A | sequential 1e− ORR, 4e− WOR | [ |
| Mo-WO3/In-CN | O2-saturated IPA aqueous solution (10 vol%) | 300 W Xe lamp >420 | 3082.9, maintained for 8 h for 4 cycles | 1.20% 400 nm | sequential 1e− ORR and WOR | [ |
| WO3/CN | deionized water | 300 W Xe lamp | 57.4, retained for 4 cycles | N/A | sequential 1e− ORR and WOR | [ |
| g-C3N4/HMoP | O2-saturated EtOH aqueous solution (5 vol%) | 300 W Xe lamp >420 | 226.2, retained for 20 h for 4 cycles | N/A | sequential 1e− ORR and WOR | [ |
| MCN/CdS | O2-saturated EtOH aqueous solution (10 vol%) | 300 W Xe lamp >420 | 1781.3, no significant decrease after 6.6 h for 5 cycles | N/A | sequential 1e− ORR | [ |
| COF/In2S3 | water | 300 W Xe lamp >420 | 691.3, retained for 6 h for 4 cycles | N/A | sequential 1e− ORR, 4e− WOR | [ |
| K+/I−-CN/ CdSe-D | O2-saturated deionized water | 300 W Xe lamp | 2240.2, maintained after 4 h for 4 cycles | N/A | sequential 1e− ORR | [ |
| ZnIn2S4/PDA | O2-saturated pure water | 300 W Xe lamp >420 | 1747.0, certain decrease after 4 h for 4 cycles | N/A | direct 2e− ORR | [ |
| BTz@ Mn0.2Cd0.8S | ultra-pure water | 300 W Xe lamp | 5368.0, maintained after 4 h for 4 cycles | 4.5% 420 nm | direct 2e− ORR and 4e− WOR | [ |
| NiO/C3N5 | air-saturated IPA aqueous solution (10 vol%) | 300 W Xe lamp ≥420 | 456.0, slight decrease after 25 h for 5 cycles | N/A | sequential 1e− ORR | [ |
| TiO2-x/g-C3N4 | O2-saturated IPA aqueous solution (10 vol%) | 5 W LED light ≥365 | 3560.6, slight decrease after 15 h for 5 cycles | N/A | sequential 1e− ORR | [ |
| 4Cl-H2PDI/GQD | O2-saturated IPA aqueous solution (10 vol%) | 300 W Xe lamp >420 | 248.4, slight decrease after 4 h for 4 cycles | 0.75% 520 nm | sequential 1e− ORR | [ |
| In2S3/g-C3N5 | O2-saturated anhydrous ethanol aqueous solution (10 vol%) | 300 W Xe lamp >420 | 4862.5, no significant decrease after 6 h for 3 cycles | N/A | sequential 1e− ORR | [ |
| COF/In2S3 | deionized water | 360 W Xe lamp | 5713.2, retained after 4 h for 4 cycles | 0.55 % 420 nm | sequential 1e− ORR, sequential electrons and holes transfer, direct 2e− WOR | [ |
| NH2-MIL-88B (Fe)/CuInS2 | deionized water | 500 W Xe lamp >420 | 316.1, retained for 5 cycles (4 h per cycle) | N/A | sequential 1e− ORR | [ |
| ZnSe QD/COF | O2-saturated EtOH aqueous solution (10 vol%) | 300 W Xe lamp | 1895.0, retained after 5 cycles | 3.81% 420 nm | sequential 1e− ORR | [ |
| C-MoO2/C3N4 | O2-saturated lactic acid aqueous solution (10 vol%) | 300 W Xe lamp >420 | 877.8, retained after 3 h for 3 cycles | 0.58% 420 nm | N/A | [ |
| RF/Zn3In2S6 | air-saturated deionized water | 300 W Xe lamp | 3174.34, retained after 4 cycles | 0.95% 420 nm | sequential 1e− ORR, sequential electrons and holes transfer, and direct 2e− WOR | [ |
| TpPa-1/BiVO4 | O2-saturated ultra-pure water | 300 W Xe lamp >420 | 723.0, slight decrease after 10 h for 5 cycles | 7.2 % 420 nm | sequential 1e− ORR and 4e− WOR | [ |
| CN/BiOBr | air-saturated methanol aqueous solution (10 vol%) | LED lamp 420 | 1810.0, slight decrease after 5 cycles | N/A | sequential 1e− ORR and WOR, sequential electrons and holes transfer, direct 2e− WOR | [ |
| Bi4O5Br2/COF | water | white LED 400-700 | 5221.0, certain decrease after 5 h for 5 cycles | N/A | sequential 1e− ORR, sequential electrons and holes transfer, and direct 2e− WOR | [ |
| K-dopedg-C3N4/ZnO | O2-saturated anhydrous ethanol solution (10 vol%) | 300 W Xe lamp AM 1.5G | 7866.7, slight decrease after 6 h for 4 cycles | N/A | Sequential 1e− ORR | [ |
| WS2/sulfur-doped g-C3N4 | O2-saturated IPA aqueous solution (5 vol%) | 250 W Hg lamp >400 | 817.0, retained after 5 h for 5 cycles | 3.19% 420 nm | sequential 1e− ORR and WOR, direct 2e− ORR | [ |
| In2.77S4/K+‐doped g‐C3N4 | air-saturated distilled water | 300 W Xe lamp 400-780 nm | 1360.0, slight decrease after 4 cycles | N/A | sequential 1e− ORR and 4e− WOR | [ |
| Zn3In2S6/Bi-MOF | O2-saturated water | 300 W Xe lamp simulated sunlight | 3689.94, retained after 4 cycles | N/A | sequential 1e−, and sequential electrons and holes transfer | [ |
| ZnCdS QDs/TT-COF | O2-saturated deionized water | 300 W Xe lamp ≥420 | 5171.0, slight decrease after 6 cycles (1 h per cycle) | 0.44% 420 nm | sequential 1e− ORR, direct 2e− WOR | [ |
| ZnO/PBD | O2-saturated methanol aqueous solution (10 vol%) | 300 W Xe lamp ≥ 360 | 4070.1, slight decrease after 4 cycles (1 h per cycle) | 7.54% 420 nm | sequential 1e− ORR | [ |
Table 2 Inorganic-organic S-scheme heterojunction photocatalysts for H2O2 production.
| Photocatalysts | Reactant medium | Irradiation (nm) | H2O2 yield (μmol g-1 h-1) and durability | Apparent quantum efficiency | Pathway | Ref. |
|---|---|---|---|---|---|---|
| S-pCN/WO2.72 | distilled water | 300 W Xe lamp 420-780 | 29.0, N/A | 1.5% 420 nm | N/A | [ |
| Pt/g-C3N4/ BiOBr | deionized water | 300 W Xe lamp >400 | 225.0, N/A | N/A | sequential 1e− WOR | [ |
| ZnO/g‑C3N4 | O2-saturated EtOH aqueous solution (10 vol%) | 300 W Xe lamp >350 | 3860.0, slight decrease after 4 h for 4 cycles | N/A | sequential 1e− ORR | [ |
| ZnO@ Polydopamine | O2-saturated glycol aqueous solution (4 vol%) | 300 W Xe lamp >420 | 2528.5, maintained after 4 h for 4 cycles | 13.96% 365 nm | sequential 1e− ORR | [ |
| PDI-Urea/BiOBr | TC (50 mg/L) and OFLO (10 mg/L) aqueous solution | 300 W Xe lamp 420‒780 | 23.7, N/A | N/A | sequential 1e− ORR | [ |
| ZnO/COF | O2-saturated EtOH aqueous solution (10 vol%) | 300 W Xe lamp AM 1.5G | 2443.0, retained for 4 h for 4 cycles | 13.12% 365 nm | sequential 1e− ORR | [ |
| TiO2/ polydopamine | O2-saturated EtOH aqueous solution (10 vol%) | 300 W Xe lamp | 2120.0, N/A | N/A | N/A | [ |
| Sv-ZIS/CN | O2-saturated IPA aqueous solution (10 vol%) | 300W Xe lamp ≥420 | 1637.7, N/A | N/A | sequential 1e− ORR | [ |
| Fe2O3/B-g-C3N4 | O2-saturated IPA aqueous solution (5 vol%) | 250 W Hg light ≥420 | 729.0, no obvious change after 4 h for 4 cycles | N/A | sequential 1e− ORR, direct 2e− ORR | [ |
| BiOBr/ZIF-8/ZnO | O2-saturated HCOOH aqueous solution (10 vol%) | LED 7 W | 2900.0, slight decrease after 8 h for 4 cycles | N/A | direct 2e− ORR | [ |
| CuInS2/PCN | O2-saturated IPA aqueous solution (5 vol%) | LED 400‒800 | 3119.0, stable for 20 h | 16.0% 420 nm | sequential 1e− ORR | [ |
| TiO2@RF | O2-saturated deionized water | 300 W Xe lamp AM 1.5G | 999.0, slight decrease after 4 cycles | N/A | sequential 1e− ORR | [ |
| PCN/MnS | deionized water | 300 W Xe lamp >420 | 133.9, retained for 5 h for 5 cycles | 8.5% 450 nm | sequential 1e− ORR, and direct 2e− ORR | [ |
| NH2-MIL-125-Ti/WO3-x | water | 300 W Xe lamp | 8.41, N/A | N/A | WOR | [ |
| TiO2/COF | O2-saturated furfuryl alcohol solution (2 mM) | 300 W Xe lamp 350‒780 | 1480.0, no significant decrease after 24 h for 4 cycles | 5.48% 365 nm | sequential 1e− ORR | [ |
| g‑C3N4/Cu2O−Pd | deionized water | 500 W Xe lamp >400 | 16992.5, retained for 8 h for 4 cycles | 3.3% 420 nm | WOR | [ |
| Sulfur-doped CN/TiO2 | O2-saturated deionized water | 300 W Xe lamp | 2128.0, slight decrease after 4 cycles | 0.61% 365 nm | direct 2e− ORR and WOR, sequential 1e− ORR | [ |
| UiO-66(−NH2)/ CuInS2 | O2-saturated EtOH aqueous solution (5 vol%) | 250 W Xe lamp ≥420 | 4073.0, retained for 4 cycles | N/A | sequential 1e− ORR | [ |
| CdS/RF | O2-saturated EtOH aqueous solution (10 vol%) | 300 W Xe lamp >420 | 2136.0, slight decrease after 4 h for 4 cycles | N/A | direct 2e− and sequential 1e− ORR | [ |
| CNQDs/BiOBr | water | 300 W Xe lamp | 28.8, N/A | N/A | sequential 1e− ORR | [ |
| BiOBr/COF | O2-saturated EtOH aqueous solution (10 vol%) | 300 W Xe lamp | 3749.0, slight decrease after 4 h for 4 cycles | N/A | direct 2e− ORR | [ |
| CdS/TpBpy | deionized water | 300 W Xe lamp >420 | 3600.0, slight decrease after 5 h for 5 cycles | 13.4% 380 nm | sequential 1e− ORR and WOR, direct 2e− ORR | [ |
| CdS/TpMA | ultrapure water | 300 W Xe lamp >420 | 1014.0, maintained for 6 h for 4 cycles | N/A | sequential 1e− ORR, 4e− WOR | [ |
| Mo-WO3/In-CN | O2-saturated IPA aqueous solution (10 vol%) | 300 W Xe lamp >420 | 3082.9, maintained for 8 h for 4 cycles | 1.20% 400 nm | sequential 1e− ORR and WOR | [ |
| WO3/CN | deionized water | 300 W Xe lamp | 57.4, retained for 4 cycles | N/A | sequential 1e− ORR and WOR | [ |
| g-C3N4/HMoP | O2-saturated EtOH aqueous solution (5 vol%) | 300 W Xe lamp >420 | 226.2, retained for 20 h for 4 cycles | N/A | sequential 1e− ORR and WOR | [ |
| MCN/CdS | O2-saturated EtOH aqueous solution (10 vol%) | 300 W Xe lamp >420 | 1781.3, no significant decrease after 6.6 h for 5 cycles | N/A | sequential 1e− ORR | [ |
| COF/In2S3 | water | 300 W Xe lamp >420 | 691.3, retained for 6 h for 4 cycles | N/A | sequential 1e− ORR, 4e− WOR | [ |
| K+/I−-CN/ CdSe-D | O2-saturated deionized water | 300 W Xe lamp | 2240.2, maintained after 4 h for 4 cycles | N/A | sequential 1e− ORR | [ |
| ZnIn2S4/PDA | O2-saturated pure water | 300 W Xe lamp >420 | 1747.0, certain decrease after 4 h for 4 cycles | N/A | direct 2e− ORR | [ |
| BTz@ Mn0.2Cd0.8S | ultra-pure water | 300 W Xe lamp | 5368.0, maintained after 4 h for 4 cycles | 4.5% 420 nm | direct 2e− ORR and 4e− WOR | [ |
| NiO/C3N5 | air-saturated IPA aqueous solution (10 vol%) | 300 W Xe lamp ≥420 | 456.0, slight decrease after 25 h for 5 cycles | N/A | sequential 1e− ORR | [ |
| TiO2-x/g-C3N4 | O2-saturated IPA aqueous solution (10 vol%) | 5 W LED light ≥365 | 3560.6, slight decrease after 15 h for 5 cycles | N/A | sequential 1e− ORR | [ |
| 4Cl-H2PDI/GQD | O2-saturated IPA aqueous solution (10 vol%) | 300 W Xe lamp >420 | 248.4, slight decrease after 4 h for 4 cycles | 0.75% 520 nm | sequential 1e− ORR | [ |
| In2S3/g-C3N5 | O2-saturated anhydrous ethanol aqueous solution (10 vol%) | 300 W Xe lamp >420 | 4862.5, no significant decrease after 6 h for 3 cycles | N/A | sequential 1e− ORR | [ |
| COF/In2S3 | deionized water | 360 W Xe lamp | 5713.2, retained after 4 h for 4 cycles | 0.55 % 420 nm | sequential 1e− ORR, sequential electrons and holes transfer, direct 2e− WOR | [ |
| NH2-MIL-88B (Fe)/CuInS2 | deionized water | 500 W Xe lamp >420 | 316.1, retained for 5 cycles (4 h per cycle) | N/A | sequential 1e− ORR | [ |
| ZnSe QD/COF | O2-saturated EtOH aqueous solution (10 vol%) | 300 W Xe lamp | 1895.0, retained after 5 cycles | 3.81% 420 nm | sequential 1e− ORR | [ |
| C-MoO2/C3N4 | O2-saturated lactic acid aqueous solution (10 vol%) | 300 W Xe lamp >420 | 877.8, retained after 3 h for 3 cycles | 0.58% 420 nm | N/A | [ |
| RF/Zn3In2S6 | air-saturated deionized water | 300 W Xe lamp | 3174.34, retained after 4 cycles | 0.95% 420 nm | sequential 1e− ORR, sequential electrons and holes transfer, and direct 2e− WOR | [ |
| TpPa-1/BiVO4 | O2-saturated ultra-pure water | 300 W Xe lamp >420 | 723.0, slight decrease after 10 h for 5 cycles | 7.2 % 420 nm | sequential 1e− ORR and 4e− WOR | [ |
| CN/BiOBr | air-saturated methanol aqueous solution (10 vol%) | LED lamp 420 | 1810.0, slight decrease after 5 cycles | N/A | sequential 1e− ORR and WOR, sequential electrons and holes transfer, direct 2e− WOR | [ |
| Bi4O5Br2/COF | water | white LED 400-700 | 5221.0, certain decrease after 5 h for 5 cycles | N/A | sequential 1e− ORR, sequential electrons and holes transfer, and direct 2e− WOR | [ |
| K-dopedg-C3N4/ZnO | O2-saturated anhydrous ethanol solution (10 vol%) | 300 W Xe lamp AM 1.5G | 7866.7, slight decrease after 6 h for 4 cycles | N/A | Sequential 1e− ORR | [ |
| WS2/sulfur-doped g-C3N4 | O2-saturated IPA aqueous solution (5 vol%) | 250 W Hg lamp >400 | 817.0, retained after 5 h for 5 cycles | 3.19% 420 nm | sequential 1e− ORR and WOR, direct 2e− ORR | [ |
| In2.77S4/K+‐doped g‐C3N4 | air-saturated distilled water | 300 W Xe lamp 400-780 nm | 1360.0, slight decrease after 4 cycles | N/A | sequential 1e− ORR and 4e− WOR | [ |
| Zn3In2S6/Bi-MOF | O2-saturated water | 300 W Xe lamp simulated sunlight | 3689.94, retained after 4 cycles | N/A | sequential 1e−, and sequential electrons and holes transfer | [ |
| ZnCdS QDs/TT-COF | O2-saturated deionized water | 300 W Xe lamp ≥420 | 5171.0, slight decrease after 6 cycles (1 h per cycle) | 0.44% 420 nm | sequential 1e− ORR, direct 2e− WOR | [ |
| ZnO/PBD | O2-saturated methanol aqueous solution (10 vol%) | 300 W Xe lamp ≥ 360 | 4070.1, slight decrease after 4 cycles (1 h per cycle) | 7.54% 420 nm | sequential 1e− ORR | [ |
Fig. 19. (a) FT-IR spectra of pure CN, Zn-TCPP, Zn-TCPP/CN2 and Zn-TCPP/CN4. (b) Photocatalytic H2O2 generation rate of Zn-TCPP/CN2 under different conditions. (c) Koutecky-Levich plots of CN and Zn-TCPP/CN2. (d) Photocatalytic H2O2 production activity of the samples. Reprinted with permission [199]. Copyright 2023, Elsevier.
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