Chinese Journal of Catalysis ›› 2023, Vol. 50: 343-351.DOI: 10.1016/S1872-2067(23)64453-5
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Huijie Li, Manzhou Chi, Xing Xin, Ruijie Wang, Tianfu Liu, Hongjin Lv*(), Guo-Yu Yang
Received:
2023-04-06
Accepted:
2023-05-12
Online:
2023-07-18
Published:
2023-07-25
Contact:
*E-mail: Supported by:
Huijie Li, Manzhou Chi, Xing Xin, Ruijie Wang, Tianfu Liu, Hongjin Lv, Guo-Yu Yang. Highly selective photoreduction of CO2 catalyzed by the encapsulated heterometallic-substituted polyoxometalate into a photo-responsive metal-organic framework[J]. Chinese Journal of Catalysis, 2023, 50: 343-351.
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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(23)64453-5
Fig. 1. SEM images of NU-1000 (a) and 1.13-P2W15Ni3 {Re(CO)3}3@NU-1000 composite (b). TEM images of NU-1000 (c) and 1.13-P2W15Ni3{Re(CO)3}3@NU-1000 composite (d). (e) selective SEM image and the corresponding elemental mapping images of 1.13-P2W15Ni3{Re(CO)3}3@NU-1000 composite.
Fig. 2. (a) The pore size distribution curves of P2W15Ni3{Re(CO)3}3, NU-1000, and P2W15Ni3{Re(CO)3}3@NU-1000; UV-vis diffuse reflectance spectra (b), FT-IR spectra (c), and PXRD patterns (d) of P2W15Ni3{Re(CO)3}3, NU-1000, and 1.13-P2W15Ni3{Re(CO)3}3@NU-1000 composite.
Fig. 3. (a) The yield of gas products in the photocatalytic CO2 reduction with different molar ratios of P2W15Ni3{Re(CO)3}3@NU-1000 in 10 h. (b) Control experiments of CO2 reduction by varying experimental conditions (Note: the moles of comparative catalysts including P2W15Ni3{Re(CO)3}3, NU-1000, Re(CO)5Cl, NiCl2, and others were kept the same as that in 1 mg 1.13-P2W15Ni3{Re(CO)3}3@NU-1000 photocatalyst). (c) Recycling tests of the 1.13-P2W15Ni3{Re(CO)3}3@NU-1000 photocatalyst. (d) Long-term photocatalytic CO2 reduction using 1.13-P2W15Ni3{Re(CO)3}3@NU-1000 composite.
Fig. 4. PL spectra (a) and normalized time-resolved PL decay kinetics (b) of NU-1000 and 1.13-P2W15Ni3{Re(CO)3}3@NU-1000 solid samples upon excitation at 365 nm.
Fig. 5. (a) High-resolution XPS spectra of Zr 3d in NU-1000 and 1.13-P2W15Ni3{Re(CO)3}3@NU-1000 before and after photocatalysis; high-resolution XPS spectra of Ni 2p (b), W 4f (c), and Re 4f (d) in 1.13-P2W15Ni3{Re(CO)3}3@NU-1000 before and after photocatalysis.
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