Chinese Journal of Catalysis ›› 2022, Vol. 43 ›› Issue (5): 1295-1305.DOI: 10.1016/S1872-2067(21)63912-8
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Aixia Wanga, Linhe Zhanga, Xuli Lia, Yangqin Gaoa, Ning Lia, Guiwu Lub, Lei Gea,*()
Received:
2021-07-01
Accepted:
2021-07-19
Online:
2022-05-18
Published:
2022-03-23
Contact:
Lei Ge
Supported by:
Aixia Wang, Linhe Zhang, Xuli Li, Yangqin Gao, Ning Li, Guiwu Lu, Lei Ge. Synthesis of ternary Ni2P@UiO-66-NH2/Zn0.5Cd0.5S composite materials with significantly improved photocatalytic H2 production performance[J]. Chinese Journal of Catalysis, 2022, 43(5): 1295-1305.
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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(21)63912-8
Fig. 1. XRD patterns of different samples. (a) Pure UiO-66-NH2 (U), 10 mg Ni2P@UiO-66-NH2 (10 N@U) and pure Ni2P (N); (b) Zn0.5Cd0.5S (ZCS), 10% 10mg Ni2P@UiO-66-NH2/Zn0.5Cd0.5S (10% 10 N@U/ZCS) and 20% 10mg Ni2P@UiO-66-NH2/Zn0.5Cd0.5S (20% 10 N@U/ZCS).
Fig. 2. (a) SEM result for UiO-66-NH2 (U); (b) SEM result for 10 mg Ni2P@UiO-66-NH2 (10 N@U); (c) TEM result for UiO-66-NH2 (U); TEM (d), HRTEM (e) results, and EDX mapping (f) of the 10mg Ni2P@UiO-66-NH2 (10 N@U) sample.
Fig. 3. (a) TEM result for Zn0.5Cd0.5S (ZCS) (HRTEM image in illustration); TEM (b) and HRTEM (c) images for 20% 10mg Ni2P@UiO-66-NH2/Zn0.5Cd0.5S (20% 10 N@U/ZCS).
Fig. 4. XPS spectra of the 10% 10mg Ni2P@UiO-66-NH2/Zn0.5Cd0.5S photocatalyst (10% 10 N@U/ZCS). (a) Zn 2p; (b) Cd 3d; (c) S 2p; (d) Zr 3d; (e) C 1s; (f) Ni 2p; (g) P 2p; (h) survey.
Fig. 5. Diffuse reflectance spectra of pure Zn0.5Cd0.5S (ZCS) and 10% 10 mg Ni2P@UiO-66-NH2/Zn0.5Cd0.5S (10% 10 N@U/ZCS). Inset: spectra of pure UiO-66-NH2 (U) and 10 mg Ni2P@UiO-66-NH2 (10 N@U).
Fig. 7. (a) Transient photocurrent diagrams for Zn0.5Cd0.5S (ZCS), 10% 10mg Ni2P@UiO-66-NH2/Zn0.5Cd0.5S (10% 10 N@U/ZCS) (with, inset, the transient photocurrent diagrams of UiO-66-NH2 (U), and 10mg Ni2P@UiO-66-NH2 (10 N@U)); (b) Electrochemical impedance diagrams for UiO-66-NH2 (U), 10mg Ni2P@UiO-66-NH2 (10 N@U), pure Zn0.5Cd0.5S (ZCS) and 10% 10mg Ni2P@UiO-66-NH2/Zn0.5Cd0.5S (10% 10 N@U/ZCS).
Fig. 9. Hydrogen production rates under visible-light illumination. (a) With different contents of x mg Ni2P@UiO-66-NH2 (x N@U) catalysts; (b) x% 10mg Ni2P@UiO-66-NH2/Zn0.5Cd0.5S (x% 10 N@U/ZCS) with different contents of 10 N@U cocatalyst.
Fig. 11. ESR spectra of e- and h+ signals of pure Zn0.5Cd0.5S (ZCS) and 10% 10 mg Ni2P@UiO-66-NH2/Zn0.5Cd0.5S (10% 10 N@U/ZCS) ternary photocatalysts at room temperature: e- signal with light irradiation time of 0 min (a), 5 min (b) and 10 min (c); h+ signal with light irradiation time of 0 min (d), 5 min (e) and 10 min (f).
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