Chinese Journal of Catalysis ›› 2022, Vol. 43 ›› Issue (8): 2249-2258.DOI: 10.1016/S1872-2067(22)64109-3
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Yang Lei, Jian-Feng Huang, Xin-Ao Li, Chu-Ying Lv, Chao-Ping Hou, Jun-Min Liu()
Received:
2022-02-23
Accepted:
2022-04-15
Online:
2022-08-18
Published:
2022-06-20
Contact:
Jun-Min Liu
Supported by:
Yang Lei, Jian-Feng Huang, Xin-Ao Li, Chu-Ying Lv, Chao-Ping Hou, Jun-Min Liu. Direct Z-scheme photochemical hybrid systems: Loading porphyrin-based metal-organic cages on graphitic-C3N4 to dramatically enhance photocatalytic hydrogen evolution[J]. Chinese Journal of Catalysis, 2022, 43(8): 2249-2258.
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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(22)64109-3
Fig. 3. (a) UV-vis absorption spectra of MOC-Py-M in ethanol solution. (b) UV-vis diffusion reflectance absorption spectra of MOC-Py-M/g-C3N4 (M = H, Cu, and Zn).
Fig. 4. H2 production curves of g-C3N4, MOC-Py-M, and MOC-Py-M/g-C3N4 (M = H, Cu, and Zn) (a), and g-C3N4, Pd/g-C3N4, ZnTPyP/g-C3N4, and ZnTPyP-Pd/g-C3N4 (b) in 100 mL H2O/TEOA (9:1, v/v) irradiated by a 300 W Xe lamp with a cut-off filter (λ > 420 nm).
Fig. 5. Photocurrent responses (a) and EIS Nyquist plots (b) of g-C3N4 and MOC-Py-M/g-C3N4 (M = Cu and Zn) with 0.2 V bias vs. Ag/AgCl under visible light illumination.
Fig. 6. (a) H2 production curves of MOC-Py-Zn and MOC-Py-Zn/g-C3N4 in 100 mL H2O/TEOA (9:1, v/v) under visible light irradiation (λ > 420 nm). (b) accumulated TONs and TOFs based on MOC-Py-Zn of MOC-Py-Zn and MOC-Py-Zn/g-C3N4 in 100 h.
Fig. 8. (a) The Z-scheme electron transfer route for •OH generation of MOC-Py-Zn/g-C3N4. (b) PL spectra at 315 nm excitation for TA-OH produced by MOC-Py-Zn, g-C3N4, and MOC-Py-Zn/g-C3N4 in the presence of TA under visible light.
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