Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/154566
Title: Axial modification of cobalt complexes on heterogeneous surface with enhanced electron transfer for carbon dioxide reduction
Authors: Wang, Jiong
Huang, Xiang
Xi, Shibo
Xu, Hu
Wang, Xin
Keywords: Engineering::Chemical engineering
Issue Date: 2020
Source: Wang, J., Huang, X., Xi, S., Xu, H. & Wang, X. (2020). Axial modification of cobalt complexes on heterogeneous surface with enhanced electron transfer for carbon dioxide reduction. Angewandte Chemie, 132(43), 19324-19329. https://dx.doi.org/10.1002/ange.202008759
Project: M4012076 RG118/18
Journal: Angewandte Chemie
Abstract: Efficient electron communication between molecular catalyst and support is critical for heterogeneous molecular electrocatalysis and yet it is often overlooked during the catalyst design. Taking CO2 electro-reduction on tetraphenylporphyrin cobalt (PCo) immobilized onto graphene as an example, we demonstrate that adding a relay molecule improves the interfacial electron communication. While the directly immobilized PCo on graphene exhibits relatively poor electron communications, it is found that diphenyl sulfide serves as an axial ligand for PCo and it improves the redox activity of PCo on the graphene surface to facilitate the generation of [PCo]C- active sites for CO2 reduction. Thus, the turnover frequencies of the immobilized Co complexes are increased. Systematic structural analysis indicates that the benzene rings of diphenyl sulfide exhibit strong face-to-face stacking with graphene, which is proposed as an efficient medium to facilitate the interfacial electron communication.
URI: https://hdl.handle.net/10356/154566
ISSN: 0044-8249
DOI: 10.1002/ange.202008759
Rights: © 2020 Wiley-VCH GmbH. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SCBE Journal Articles

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