Chinese Journal of Catalysis ›› 2022, Vol. 43 ›› Issue (12): 3134-3141.DOI: 10.1016/S1872-2067(22)64116-0
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Anxiang Guana,†, Yueli Quana,†, Yangshen Chena, Zhengzheng Liua, Junbo Zhanga, Miao Kana, Quan Zhanga, Haoliang Huangb, Linping Qiana, Linjuan Zhangb, Gengfeng Zhenga,*()
Received:
2022-03-29
Accepted:
2022-04-27
Online:
2022-12-18
Published:
2022-10-18
Contact:
Gengfeng Zheng
About author:
First author contact:†Contributed equally to this work.
Supported by:
Anxiang Guan, Yueli Quan, Yangshen Chen, Zhengzheng Liu, Junbo Zhang, Miao Kan, Quan Zhang, Haoliang Huang, Linping Qian, Linjuan Zhang, Gengfeng Zheng. Efficient CO2 fixation with acetophenone on Ag-CeO2 electrocatalyst by a double activation strategy[J]. Chinese Journal of Catalysis, 2022, 43(12): 3134-3141.
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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(22)64116-0
Fig. 2. (a) XRD patterns of CeO2 NWs (blue curve) and Ag-CeO2 NWs (red curve). (b) SEM image of Ag-CeO2 NWs. TEM (c) and high-resolution TEM (d) images of Ag-CeO2 NWs. (e) EDS elemental mapping of Ag-CeO2 NWs.
Fig. 3. XPS spectra of Ag-CeO2 NWs in the Ce 3d (a) and Ag 3d (b) regions. (c) XANES spectra of Ag K-edge for Ag-CeO2 NWs (red curve) and Ag foil (black curve). (d) First-derivatives of the XANES region for Ag-CeO2 NWs (upper panel) and Ag foil (low panel). (e) Wavelet-transform images of EXAFS data at Ag K-edge for Ag foil (upper panel) and Ag-CeO2 NWs (lower panel). (f) FT-EXAFS spectra of Ag K-edge for Ag-CeO2 NWs (red curve) and Ag foil (black curve).
Fig. 4. (a) Linear sweep voltammetry curves for Ag-CeO2 NWs sample in anhydrous acetonitrile with 0.2 mol L?1 tetrabutylammonium bromide under different reaction conditions: CO2 only (blue curve); acetophenone only (orange curve); and both CO2 and acetophenone (red curve). (b) Partial current densities (upper panel) and Faradaic efficiencies (lower panel) of 2-phenyllactic acid at different applied potentials when using the Ag-CeO2 NWs as catalyst. (c) Partial current densities (upper panel) and Faradaic efficiencies (lower panel) of 2-phenyllactic acid at -1.8 V vs. Ag/AgI for different catalysts. (d) The stability test of Ag-CeO2 NWs at -1.8 V vs. Ag/AgI.
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