Chinese Journal of Catalysis ›› 2021, Vol. 42 ›› Issue (9): 1500-1508.DOI: 10.1016/S1872-2067(20)63754-8
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Li Zhua, Yiyang Lina, Kang Liua, Emiliano Cortésb, Hongmei Lia, Junhua Huc, Akira Yamaguchid, Xiaoliang Liua,#(), Masahiro Miyauchid,$(
), Junwei Fua,¥(
), Min Liua,*(
)
Received:
2020-11-18
Accepted:
2020-12-09
Online:
2021-09-18
Published:
2021-05-16
Contact:
Xiaoliang Liu,Masahiro Miyauchi,Junwei Fu,Min Liu
About author:
¥ E-mail: fujunwei@csu.edu.cnSupported by:
Li Zhu, Yiyang Lin, Kang Liu, Emiliano Cortés, Hongmei Li, Junhua Hu, Akira Yamaguchi, Xiaoliang Liu, Masahiro Miyauchi, Junwei Fu, Min Liu. Tuning the intermediate reaction barriers by a CuPd catalyst to improve the selectivity of CO2 electroreduction to C2 products[J]. Chinese Journal of Catalysis, 2021, 42(9): 1500-1508.
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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(20)63754-8
Fig. 1. (a) Adsorption energy of CO2 and ΔG of CO2* hydrogenation; (b) Calculated free energy diagrams for the CO2 reduction process; (c) Schematic diagram of the PDS of the CO2 reduction process on Cu(100), CuPd(100) interface, and Pd(100) facet.
Fig. 2. (a) XRD patterns of the prepared Cu, CuPd, and Pd samples after electrochemical reduction for 30 min; (b,c) Low-resolution and high-resolution TEM images of the CuPd sample; (d) HAADF-STEM image combined with the EDS mapping of the CuPd sample.
Fig. 4. CO2-TPD (a) and CO-TPD (b) curves of Cu, CuPd(100) interface, and Pd catalysts; (c) Gas sensor experiments for Cu, CuPd(100) interface, and Pd catalysts at 0.1, 0.2, 0.3, 0.4, and 0.5 V; (d) Calculated current density differences (Δj) between vacuum and CO2+H2O atmosphere.
Fig. 5. (a) FE of different products for Cu, CuPd(100) interface, and Pd catalysts at different applied potentials; (b) FE ratios of C2 to C1 products (FEC2/FEC1) at different applied potentials; (c) Current density curves and (d) Tafel slopes for Cu, CuPd(100) interface, and Pd catalysts.
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