N-doped core–shell mesoporous carbon spheres embedded by Ni nanoparticles for CO2 electroreduction

Herein, we successfully prepare highly dispersed and uniform small nano-size nickel nanoparticles embedded on core–shell carbon spheres by confined-deposition method. The mesoporous silica layer containing surfactant coated on the surface of the polymer sphere provides confined space and effectively...

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Bibliographic Details
Published in:Rare metals 2023-07, Vol.42 (7), p.2284-2293
Main Authors: Du, Juan, Lin, Qin-Yan, Zhang, Jian-Qi, Hou, Sen-Lin, Chen, Ai-Bing
Format: Article
Language:English
Subjects:
Biomaterials
Carbon dioxide
Chemistry and Materials Science
Confined spaces
Core-shell structure
Deposition
Energy
Materials Engineering
Materials Science
Metallic Materials
Nanoparticles
Nanoscale Science and Technology
Nickel
Original Article
Physical Chemistry
Pyrolysis
Reduction
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Summary:Herein, we successfully prepare highly dispersed and uniform small nano-size nickel nanoparticles embedded on core–shell carbon spheres by confined-deposition method. The mesoporous silica layer containing surfactant coated on the surface of the polymer sphere provides confined space and effectively controls the growth of nickel nanoparticles during pyrolysis. At the same time, the introduction of nickel species has an impact on structure of the obtained carbon spheres, and it can promote the deposition of carbon to realize the adjustment from hollow to core–shell and then to solid spheres. Owing to the uniform distribution of Ni nanoparticles with small size, mesoporous structure, N-doping groups, high specified surface areas, and core–shell structure, the obtained catalyst shows exciting ability for the production of CO by reduction of CO 2 with a maximum CO Faradaic efficiency of 98%, indicating its promising prospect in electro-reduction of CO 2 . Graphical Abstract
ISSN:1001-0521
1867-7185
DOI:10.1007/s12598-023-02317-w