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Sunlight-assisted hydrogenation of CO2 into ethanol and C2+ hydrocarbons by sodium-promoted Co@C nanocomposites
Open accessAbstract
Abstract The hydrogenation of CO2 into hydrocarbons promoted by the action of sunlight has been studied on Co nanoparticles covered by thin carbon layers. In particular, nearly 100% selectivity to hydrocarbons is obtained with increased selectivities towards C2+ hydrocarbons and alcohols (mainly ethanol) when using nanostructured materials comprising metallic cobalt nanoparticles, carbon layers, and sodium as promoter (Na-Co@C). In the contrary, larger amount of CH4 and lower selectivity to C2+ hydrocarbons and alcohols were obtained in the conventional thermal catalytic process. When using Co@C nanoparticles in the absence of Na or bare Co3O4 as catalyst, methane is essentially the main product (selectivity >96%). Control experiments in the presence of methanol as a hole scavenger suggest the role of light in generating charges by photon absorption as promoting factor. The reaction mechanism for photoassisted CO2 hydrogenation on the Co-based catalysts was investigated by near ambient-pressure X-ray photoelectron (AP-XPS) and in situ Raman spectroscopies, which provided information on the role of light and Na promoter in the modulation of product distribution for CO2 hydrogenation. Spectroscopic studies suggested that surface CO2 dissociation to CO, the stabilization of CO adsorbed on the surface of Na-Co@C catalyst and the easy desorption of reaction products is a key step for photothermal CO2 hydrogenation to ethanol and C2+ hydrocarbons.
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Cites
Recent advances in catalytic hydrogenation of carbon dioxide
Wang, W., Wang, S., Ma, X., & Gong, J. (2011) · Chemical Society Reviews · doi:10.1039/c1cs15008a · Cited by 3,316
CO2 hydrogenation to hydrocarbons over Co and Fe-based Fischer-Tropsch catalysts
Visconti, C. G., Martinelli, M., Falbo, L., Fratalocchi, L., & Lietti, L. (2016) · Catalysis Today · doi:10.1016/j.cattod.2016.04.010 · Cited by 150
Cited by
Photocatalytic CO 2 Reduction to C2+ Products
Albero, J., Peng, Y., & García, H. (2020) · ACS Catalysis · doi:10.1021/acscatal.0c00478 · Cited by 899
Self-citationFundamentals and applications of photo-thermal catalysis
Mateo, D., Cerrillo, J. L., Durini, S., & Gascon, J. (2021) · Chemical Society Reviews · doi:10.1039/d0cs00357c · Cited by 799
Liu, L., & Corma, A. (2023) · Chemical Reviews · doi:10.1021/acs.chemrev.2c00733 · Cited by 689
Self-citationFundamentals and applications of photocatalytic CO2 methanation
Ulmer, U., Dingle, T., Duchesne, P. N., Morris, R. H., Tavasoli, A., Wood, T., & Ozin, G. A. (2019) · Nature Communications · doi:10.1038/s41467-019-10996-2 · Cited by 498
Principles and applications of photothermal catalysis
Song, C., Wang, Z., Yin, Z., Xiao, D., & Ma, D. (2022) · Chem Catalysis · doi:10.1016/j.checat.2021.10.005 · Cited by 481
Metadata
- Authors
- Liu, L., Puga, A. V., Cored, J., Concepción, P., Pérez-Dieste, V., García, H., & Corma, A.
- Venue
- Applied Catalysis B: Environmental
- Publisher
- Elsevier BV
- Published
- 2018-11
- Volume
- 235
- Pages
- 186-196
- ISSN
- 0926-3373 (ISSN-L)
- OpenAlex
- W2801475109
- Cited by
- 161
- References
- 2
- FWCI
- 3.39
- Type
- journal article
- Language
- en
- Open access
- bronze
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- The paper
- Liu, L., Puga, A. V., Cored, J., Concepción, P., Pérez-Dieste, V., García, H., & Corma, A. (2018). Sunlight-assisted hydrogenation of CO2 into ethanol and C2+ hydrocarbons by sodium-promoted Co@C nanocomposites. Applied Catalysis B: Environmental. https://doi.org/10.1016/j.apcatb.2018.04.060
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