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Temperature Dependence of the Artificial Photosynthesis Reactions Catalyzed by Nanostructured Co/CoO

[Image: see text] Carbon dioxide (CO(2)) and water (H(2)O) have been converted into hydrocarbons at temperature ranging from 58 to 242 °C through an artificial photosynthesis reaction catalyzed by nanostructured Co/CoO. The experimental results show that chain hydrocarbons (alkane hydrocarbons) (C(n...

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Autores principales: Ren, Haizhou, Kan, Zhe, Wang, Zibo, Shen, Mengyan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2020
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7774085/
https://www.ncbi.nlm.nih.gov/pubmed/33403270
http://dx.doi.org/10.1021/acsomega.0c04693
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author Ren, Haizhou
Kan, Zhe
Wang, Zibo
Shen, Mengyan
author_facet Ren, Haizhou
Kan, Zhe
Wang, Zibo
Shen, Mengyan
author_sort Ren, Haizhou
collection PubMed
description [Image: see text] Carbon dioxide (CO(2)) and water (H(2)O) have been converted into hydrocarbons at temperature ranging from 58 to 242 °C through an artificial photosynthesis reaction catalyzed by nanostructured Co/CoO. The experimental results show that chain hydrocarbons (alkane hydrocarbons) (C(n)H(2n+2), where 3 ≤ n ≤ 16) mainly form at a temperature higher than about 60 °C, the production rate reaches a maximum at 130 °C, and abruptly decreases above 130 °C, and then gradually increases until 220 °C. While the temperature is higher than 220 °C, benzene (C(6)H(6)) and its derivatives such as toluene (C(7)H(8)), p-xylene (C(8)H(10)), and C(9)H(12) form. The modeling of temperature dependence of the reaction rate reveals that the vaporization of the adsorbed water contributes to the sharp peak; the activation energy is estimated as about 1 eV, which is in agreement with the reaction of CO and H(2) to synthesize chain hydrocarbons. The experimental results support the mechanism that the chemisorbed CO(2) and physisorbed H(2)O on the CoO surface are disassociated or excited with light, and the disassociated or excited molecules then synthesize hydrocarbons. When most of the water molecules leave from the CoO at temperature higher than 220 °C, the hydrogen source is of very low concentration while the carbon source remain the same because of the chemisorption, and thus benzene and its derivatives with low hydrogen atom number form.
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spelling pubmed-77740852021-01-04 Temperature Dependence of the Artificial Photosynthesis Reactions Catalyzed by Nanostructured Co/CoO Ren, Haizhou Kan, Zhe Wang, Zibo Shen, Mengyan ACS Omega [Image: see text] Carbon dioxide (CO(2)) and water (H(2)O) have been converted into hydrocarbons at temperature ranging from 58 to 242 °C through an artificial photosynthesis reaction catalyzed by nanostructured Co/CoO. The experimental results show that chain hydrocarbons (alkane hydrocarbons) (C(n)H(2n+2), where 3 ≤ n ≤ 16) mainly form at a temperature higher than about 60 °C, the production rate reaches a maximum at 130 °C, and abruptly decreases above 130 °C, and then gradually increases until 220 °C. While the temperature is higher than 220 °C, benzene (C(6)H(6)) and its derivatives such as toluene (C(7)H(8)), p-xylene (C(8)H(10)), and C(9)H(12) form. The modeling of temperature dependence of the reaction rate reveals that the vaporization of the adsorbed water contributes to the sharp peak; the activation energy is estimated as about 1 eV, which is in agreement with the reaction of CO and H(2) to synthesize chain hydrocarbons. The experimental results support the mechanism that the chemisorbed CO(2) and physisorbed H(2)O on the CoO surface are disassociated or excited with light, and the disassociated or excited molecules then synthesize hydrocarbons. When most of the water molecules leave from the CoO at temperature higher than 220 °C, the hydrogen source is of very low concentration while the carbon source remain the same because of the chemisorption, and thus benzene and its derivatives with low hydrogen atom number form. American Chemical Society 2020-12-07 /pmc/articles/PMC7774085/ /pubmed/33403270 http://dx.doi.org/10.1021/acsomega.0c04693 Text en © 2020 The Authors. Published by American Chemical Society This is an open access article published under a Creative Commons Non-Commercial No Derivative Works (CC-BY-NC-ND) Attribution License (http://pubs.acs.org/page/policy/authorchoice_ccbyncnd_termsofuse.html) , which permits copying and redistribution of the article, and creation of adaptations, all for non-commercial purposes.
spellingShingle Ren, Haizhou
Kan, Zhe
Wang, Zibo
Shen, Mengyan
Temperature Dependence of the Artificial Photosynthesis Reactions Catalyzed by Nanostructured Co/CoO
title Temperature Dependence of the Artificial Photosynthesis Reactions Catalyzed by Nanostructured Co/CoO
title_full Temperature Dependence of the Artificial Photosynthesis Reactions Catalyzed by Nanostructured Co/CoO
title_fullStr Temperature Dependence of the Artificial Photosynthesis Reactions Catalyzed by Nanostructured Co/CoO
title_full_unstemmed Temperature Dependence of the Artificial Photosynthesis Reactions Catalyzed by Nanostructured Co/CoO
title_short Temperature Dependence of the Artificial Photosynthesis Reactions Catalyzed by Nanostructured Co/CoO
title_sort temperature dependence of the artificial photosynthesis reactions catalyzed by nanostructured co/coo
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7774085/
https://www.ncbi.nlm.nih.gov/pubmed/33403270
http://dx.doi.org/10.1021/acsomega.0c04693
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