journal article·2019-04-22

Electronic Tuning of Cobalt Porphyrins Immobilized on Nitrogen-Doped Graphene for CO2 Reduction

Minghui Zhu, Chenxi Cao, Jiacheng Chen, Yang Sun, Ruquan Ye, Jing Xu, Yi-Fan Han

ACS Applied Energy Materials· Volume 2· Issue 4
Publisher page

Abstract

Electroreduction of CO2 into CO can be catalyzed by cobalt porphyrins, and the performance can be improved by peripheral functionalization or heterogenization. Herein, we report a facile approach to electronically tune the metal center. Through the introduction of nitrogen atoms onto the graphene support, the activity of cobalt porphyrin/graphene composite can be increased by a factor of 2. Density functional theory calculations and X-ray photoelectron spectroscopy analysis revealed that nitrogen atoms embedded in graphene increase the electron density of cobalt atoms and boost its activity for CO2 electroreduction. Such a methodology has the potential to be extended to other catalytic systems involving molecular catalysts.
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Research context

OpenAlex topics: CO2 Reduction Techniques and Catalysts · Electrocatalysts for Energy Conversion · Supercapacitor Materials and Fabrication

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China

Department of Chemistry, City University of Hong Kong, Hong Kong 999077, China

Research Center of Heterogeneous Catalysis and Engineering Sciences, School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, China

Funding

City University of Hong Kong · East China University of Science and Technology · Shanghai Sailing Program · CityU New Research Initiatives/Infrastructure Support from Central

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