Acta Phys. -Chim. Sin. ›› 2026, Vol. 42 ›› Issue (5): 100234.doi: 10.1016/j.actphy.2025.100234
• ARTICLE • Previous Articles
Interfacial stabilization of alkali metal oxides on carbon spheres for high-performance CO2 chemisorption
Feifan Zhao1, Feiyan Xu1,2,*(
), Jiaguo Yu1,*()
- 1 Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430078, Hubei Province, China
2 Instituto Universitario de Tecnología Química, CSIC-UPV, Universitat Polite?cnica de Vale?ncia, Valencia 46022, Spain
-
Received:2025-12-12Revised:2025-12-22Accepted:2025-12-23Published:2026-01-23 -
Contact:Email: xufeiyan@cug.edu.cn (Feiyan Xu)yujiaguo93@cug.edu.cn (Jiaguo Yu)
Cite this article
Feifan Zhao, Feiyan Xu, Jiaguo Yu. Interfacial stabilization of alkali metal oxides on carbon spheres for high-performance CO2 chemisorption[J]. Acta Phys. -Chim. Sin. 2026, 42(5), 100234. doi: 10.1016/j.actphy.2025.100234
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Fig 1
Field emission scanning electron microscopy (FESEM) images of (a) HCS, (b) Li-HCS, (c) Na-HCS, and (d) K-HCS."
Fig 1
Fig 2
TEM images and corresponding HAADF-STEM elemental mappings of (a) HCS, (b) Li-HCS, (c) Na-HCS, and (d) K-HCS."
Fig 2
Fig 3
(a) XRD patterns, (b) FTIR spectra, (c) XPS survey spectra. High-resolution XPS spectra of (d) N 1s and (e) O 1s of HCS, Li-HCS, Na-HCS, and K-HCS. (f) High-resolution XPS spectra of Li 1s of Li-HCS. (g) High-resolution XPS spectra of Na 1s of Na-HCS. (h) High-resolution XPS spectra of K 2p of K-HCS. (i) N2 adsorption-desorption isotherms, and pore size distribution curves of HCS, Li-HCS, Na-HCS, and K-HCS."
Fig 3
Fig 4
(a–c) CO2 adsorption performance of Li-HCS, Na-HCS, and K-HCS with different loadings at 273 K. (d) CO2 adsorption capacity and (e) N2 adsorption capacity of HCS, Li-HCS, Na-HCS, and K-HCS at their respective optimal loadings at 273 K. (f) IAST-predicted CO2/N2 selectivity of HCS, Li-HCS, Na-HCS, and K-HCS at 273 K (g) Time-dependent CO2 uptake profiles of HCS, Li-HCS, Na-HCS, and K-HCS at 313 K. (h) CO2 removal efficiency of HCS, Li-HCS, Na-HCS, and K-HCS at 273 K and 0.15 bar. (i) CO2 capture rate of HCS, Li-HCS, Na-HCS, and K-HCS at 313 K."
Fig 4
Fig 5
(a) Adsorption energies of CO2 on HCS, Li-HCS, Na-HCS, and K-HCS. (b) Electron transfer from HCS, Li-HCS, Na-HCS, and K-HCS to CO2 upon adsorption. Projected density of states (PDOS) of CO2 adsorbed on different materials: (c) PDOS of CO2 and HCS in the HCS system; (d) PDOS of CO2 and Li-HCS in the Li-HCS system; (e) PDOS of CO2 and Na-HCS in the Na-HCS system; (f) PDOS of CO2 and K-HCS in the K-HCS system."
Fig 5
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