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Abstract:
Although, electrons transfer plays an important role in achieving the electrocatalytic CO2 reduction reaction (CO2RR), it is scarce to regulate the electron transfer channels for enhancing the performance of CO2RR via rational design. Here, based on different solvothermal conditions, two metal-organic coordination polymers (MOCPs, Ag-MOCP-1 and Ag-MOCP-2) electrocatalyst for CO2RR were obtained by the same Ag ions and 5-phenyltetrazolium ligands. Single crystal X-ray diffraction showed Ag-MOCP-2 with intra-&inter-layer C-H center dot center dot center dot pi and pi center dot center dot center dot pi interactions, while Ag-MOCP-1 with intra-layer pi center dot center dot center dot pi interactions. The intra-&inter-layer pi interactions in Ag-MOCP-2 makes it show multi-dimensional electron transfer channels, which enable Ag-MOCP-2 with higher electron conductivities and lower band gap than Ag-MOCP-1. And the Faradaic efficiency of CO for Ag-MOCP-2 with 78.3 % is higher than that for Ag-MOCP-1 with 69.1 % at -1.08 V vs RHE, and the maximum difference can reach 22 % at -1.48 V vs RHE. Based on the same central metal and organic ligands of the two MOCPs, we believe that multi-dimensional electron transfer channels make a predominant contribution for improving CO2RR performance in this work.
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CHEMICAL ENGINEERING JOURNAL
ISSN: 1385-8947
Year: 2023
Volume: 454
1 3 . 4
JCR@2023
1 3 . 4 0 0
JCR@2023
ESI Discipline: ENGINEERING;
ESI HC Threshold:35
JCR Journal Grade:1
CAS Journal Grade:1
Cited Count:
WoS CC Cited Count: 9
SCOPUS Cited Count: 9
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 0
Affiliated Colleges: