Enhancing effect of cobalt phthalocyanine dispersion on electrocatalytic reduction of CO2 towards methanol

Guo, Tianxiang; Wang, Xilai; Xing, Xiaodong; Fu, Zhixiang; Ma, Changxin; Bedane, Alemayehu Hailu; Kong, Lingfeng

doi:10.1007/s11356-023-30883-0

Cited by 4 publications

(1 citation statement)

References 93 publications

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“…At present, a series of catalytic materials have been reported in the CO 2 RR, including metals, 12 metal oxides, 13,14 metal sulfides, 15 and metal complexes. 16 Among them, transition metal phthalocyanines show great potential in catalyzing the CO 2 RR because of its adjustable macrocyclic conjugated structure and clear M–N 4 active sites. 17–19 In particular, cobalt phthalocyanine (CoPc) has been widely studied for its high selectivity toward CO 2 -to-CO conversion.…”

Section: Introductionmentioning

confidence: 99%

A universal route to graft highly dispersed cobalt phthalocyanine on porous carbon for efficient CO₂ electroreduction

Wu,

Gao,

Ping

et al. 2024

New J. Chem.

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Section: Introductionmentioning

confidence: 99%

A universal route to graft highly dispersed cobalt phthalocyanine on porous carbon for efficient CO₂ electroreduction

Wu,

Gao,

Ping

et al. 2024

New J. Chem.

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Electrocatalytic Conversion of CO₂ to Formic Acid: A Journey from 3d-Transition Metal-Based Molecular Catalyst Design to Electrolyzer Assembly

Das,

Karim,

Guria

et al. 2024

Acc. Chem. Res.

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Electrochemical CO₂ Reduction by Cobalt(II)2,9,16,23-tetra(amino)phthalocyanine: Enhancement Effect of Active Sites toward Methanol Formation

Guo,

Wang,

et al. 2024

Energy Fuels

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The electrochemical reduction of CO2 to high-value-added fuels such as methanol is an effective avenue to alleviate the greenhouse effect and global climate change. However, reasonable design and screening of highly efficient electrocatalysts remain challenging. So, a promising cobalt(II) 2,9,16,23-tetra(amino)phthalocyanine (CoTAPc) hybrid electrocatalyst was prepared with carbon nanotubes (CNT) as the support based on the ball milling method. And its surface morphology and structure were characterized by the methods such as scanning electron microscopy, Brunauer–Emmett–Teller, energy-dispersive spectroscopy, Fourier transform infrared spectrometer, UV–vis absorption spectra, Raman spectra, and X-ray photoelectron spectroscopy, as well as the performance of CO2 reduction reactions (CO2RR) was evaluated based on those methods, such as cyclic voltammetry, linear sweep voltammetry, electrochemical impedance spectroscopy, gas chromatograph, 1H nuclear magnetic resonance, and headspace gas chromatography. Then, the structure–activity relationship on the hybrid catalyst and the influence mechanisms of CNT, ball milling, and amino group on CO2RR were elucidated by combining with the density functional theory (DFT) calculations. The addition of CNT improved the dispersion and induced the structural bending deformation of CoTAPc to form more active sites for CO2 reduction toward methanol, accompanied by the increase of the Faradaic efficiency and current density by nearly 76 and 200%, respectively. The shear action of ball milling shortened the length of the CNT and enhanced the interaction between CoTAPc and the CNT so that the electron-transfer resistance during the CO2RR decreased, achieving nearly 150% increase of the partial current density of methanol. The amino group on CoTAPc affected the pathway of the CO2RR to methanol by modifying the charge distribution of the Co–N4 structure to alter the binding energy of the intermediate. According to the results of DFT calculations, the pathway of CO2RR to methanol on the hybrid catalyst was proposed to be CO2(g) → *CO2 → *CO2 – → *COOH →*CO → *CHO → *CH2O → *CH2OH → *CH3OH → CH3OH(l). This work will provide a significant reference for the preparation of high-performance electrocatalysts to achieve efficient CO2 reduction to those high-value-added products such as methanol.

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Enhancing effect of cobalt phthalocyanine dispersion on electrocatalytic reduction of CO2 towards methanol

Cited by 4 publications

References 93 publications

A universal route to graft highly dispersed cobalt phthalocyanine on porous carbon for efficient CO₂ electroreduction

A universal route to graft highly dispersed cobalt phthalocyanine on porous carbon for efficient CO₂ electroreduction

Electrocatalytic Conversion of CO₂ to Formic Acid: A Journey from 3d-Transition Metal-Based Molecular Catalyst Design to Electrolyzer Assembly

Electrochemical CO₂ Reduction by Cobalt(II)2,9,16,23-tetra(amino)phthalocyanine: Enhancement Effect of Active Sites toward Methanol Formation

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Enhancing effect of cobalt phthalocyanine dispersion on electrocatalytic reduction of CO2 towards methanol

Cited by 4 publications

References 93 publications

A universal route to graft highly dispersed cobalt phthalocyanine on porous carbon for efficient CO2 electroreduction

A universal route to graft highly dispersed cobalt phthalocyanine on porous carbon for efficient CO2 electroreduction

Electrocatalytic Conversion of CO2 to Formic Acid: A Journey from 3d-Transition Metal-Based Molecular Catalyst Design to Electrolyzer Assembly

Electrochemical CO2 Reduction by Cobalt(II)2,9,16,23-tetra(amino)phthalocyanine: Enhancement Effect of Active Sites toward Methanol Formation

Contact Info

Product

Resources

About

A universal route to graft highly dispersed cobalt phthalocyanine on porous carbon for efficient CO₂ electroreduction

A universal route to graft highly dispersed cobalt phthalocyanine on porous carbon for efficient CO₂ electroreduction

Electrocatalytic Conversion of CO₂ to Formic Acid: A Journey from 3d-Transition Metal-Based Molecular Catalyst Design to Electrolyzer Assembly

Electrochemical CO₂ Reduction by Cobalt(II)2,9,16,23-tetra(amino)phthalocyanine: Enhancement Effect of Active Sites toward Methanol Formation