Enhanced CO2 electroreduction on Co active site of cobalt phthalocyanine by electronic effect

Huiying TIAN; Kai WANG; Ziyi SHUI; Muhammad ALI RAZA; Hang XIAO; Meidan QUE; Liangliang ZHU; Xi CHEN

doi:10.1016/j.matlet.2021.131482

Enhanced CO₂ electroreduction on Co active site of cobalt phthalocyanine by electronic effect

Huiying TIAN, Kai WANG, Ziyi SHUI, Muhammad ALI RAZA, Hang XIAO, Meidan QUE^*, Liangliang ZHU^*, Xi CHEN^*

^*Corresponding author for this work

Research output: Journal Publications › Journal Article (refereed) › peer-review

11 Citations (Scopus)

Abstract

Metal phthalocyanines molecular catalysts exhibit the unique ability of CO ₂ electrochemical reduction reaction (CO ₂ERR) thanks to their well-defined macrocycle structure. In this work, we introduced different substituting functional groups at the phthalocyanine ring of cobalt phthalocyanine to study the relationship of molecular structure optimization and CO ₂ERR activity. An optimal nitro-substituted cobalt phthalocyanine catalyst can mediate CO ₂ to CO in a H-cell with maximum selectivity of ∼94% together with a current density of 12.6 mA cm ⁻² at −0.877 V vs. RHE. The insights of this work on designing and optimizing of the molecular catalysts contribute to lower energy as well as cost-effective CO ₂ERR.

Original language	English
Article number	131482
Journal	Materials Letters
Volume	310
Early online date	16 Dec 2021
DOIs	https://doi.org/10.1016/j.matlet.2021.131482
Publication status	Published - 1 Mar 2022
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2021 Elsevier B.V.

Funding

This work was supported by the National Natural Science Foundation of China (62004155, 12002271, and 11872302); Scientific Research Project of Shaanxi Provincial Department of Education (20JK0714); Xi'an Science and Technology Plan Project, China (2019220914SYS024CG046).

Keywords

CO reduction reaction
Cobalt phthalocyanine
Electronic effect
Molecular catalyst

Access to Document

10.1016/j.matlet.2021.131482

Cite this

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title = "Enhanced CO2 electroreduction on Co active site of cobalt phthalocyanine by electronic effect",

abstract = "Metal phthalocyanines molecular catalysts exhibit the unique ability of CO 2 electrochemical reduction reaction (CO 2ERR) thanks to their well-defined macrocycle structure. In this work, we introduced different substituting functional groups at the phthalocyanine ring of cobalt phthalocyanine to study the relationship of molecular structure optimization and CO 2ERR activity. An optimal nitro-substituted cobalt phthalocyanine catalyst can mediate CO 2 to CO in a H-cell with maximum selectivity of ∼94% together with a current density of 12.6 mA cm −2 at −0.877 V vs. RHE. The insights of this work on designing and optimizing of the molecular catalysts contribute to lower energy as well as cost-effective CO 2ERR.",

keywords = "CO reduction reaction, Cobalt phthalocyanine, Electronic effect, Molecular catalyst",

author = "Huiying TIAN and Kai WANG and Ziyi SHUI and {ALI RAZA}, Muhammad and Hang XIAO and Meidan QUE and Liangliang ZHU and Xi CHEN",

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T1 - Enhanced CO2 electroreduction on Co active site of cobalt phthalocyanine by electronic effect

AU - TIAN, Huiying

AU - WANG, Kai

AU - SHUI, Ziyi

AU - ALI RAZA, Muhammad

AU - XIAO, Hang

AU - QUE, Meidan

AU - ZHU, Liangliang

AU - CHEN, Xi

PY - 2022/3/1

Y1 - 2022/3/1

N2 - Metal phthalocyanines molecular catalysts exhibit the unique ability of CO 2 electrochemical reduction reaction (CO 2ERR) thanks to their well-defined macrocycle structure. In this work, we introduced different substituting functional groups at the phthalocyanine ring of cobalt phthalocyanine to study the relationship of molecular structure optimization and CO 2ERR activity. An optimal nitro-substituted cobalt phthalocyanine catalyst can mediate CO 2 to CO in a H-cell with maximum selectivity of ∼94% together with a current density of 12.6 mA cm −2 at −0.877 V vs. RHE. The insights of this work on designing and optimizing of the molecular catalysts contribute to lower energy as well as cost-effective CO 2ERR.

AB - Metal phthalocyanines molecular catalysts exhibit the unique ability of CO 2 electrochemical reduction reaction (CO 2ERR) thanks to their well-defined macrocycle structure. In this work, we introduced different substituting functional groups at the phthalocyanine ring of cobalt phthalocyanine to study the relationship of molecular structure optimization and CO 2ERR activity. An optimal nitro-substituted cobalt phthalocyanine catalyst can mediate CO 2 to CO in a H-cell with maximum selectivity of ∼94% together with a current density of 12.6 mA cm −2 at −0.877 V vs. RHE. The insights of this work on designing and optimizing of the molecular catalysts contribute to lower energy as well as cost-effective CO 2ERR.

KW - CO reduction reaction

KW - Cobalt phthalocyanine

KW - Electronic effect

KW - Molecular catalyst

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DO - 10.1016/j.matlet.2021.131482

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