通过计算模拟探索氧化石墨烯泡沫对CO的捕获与解吸

Exploring the capture and desorption of CO on graphene oxide foams supported by computational calculations.

作者信息

Arango Hoyos Bryan E, Osorio H Franco, Valencia Gómez E K, Guerrero Sánchez J, Del Canto Palominos A P, Larrain Felipe A, Prías Barragán J J

机构信息

Energy Engineering, Faculty of Engineering and Sciences, Universidad Adolfo Ibáñez, 7941169, Santiago, Chile.

Electronic Instrumentation Technology Program, Faculty of Basic Science and Technology, Universidad del Quindío, 630001, Armenia, Colombia.

出版信息

Sci Rep. 2023 Sep 2;13(1):14476. doi: 10.1038/s41598-023-41683-4.

Abstract

In the last decade, the highest levels of greenhouse gases (GHG) in the atmosphere have been recorded, with carbon dioxide (CO) being one of the GHGs that most concerns mankind due to the rate at which it is generated on the planet. Given its long time of permanence in the atmosphere (between 100 to 150 years); this has deployed research in the scientific field focused on the absorption and desorption of CO in the atmosphere. This work presents the study of CO adsorption employing materials based on graphene oxide (GO), such as GO foams with different oxidation percentages (3.00%, 5.25%, and 9.00%) in their structure, obtained via an environmentally friendly method. The characterization of CO adsorption was carried out in a closed system, within which were placed the GO foams and other CO adsorbent materials (zeolite and silica gel). Through a controlled chemical reaction, production of CO was conducted to obtain CO concentration curves inside the system and calculate from these the efficiency, obtained between 86.28 and 92.20%, yield between 60.10 and 99.50%, and effectiveness of CO adsorption of the materials under study. The results obtained suggest that GO foams are a promising material for carbon capture and the future development of a new clean technology, given their highest CO adsorption efficiency and yield.

摘要

在过去十年中,大气中的温室气体(GHG)达到了最高水平,二氧化碳(CO)是最令人类担忧的温室气体之一,因为它在地球上的产生速度很快。鉴于其在大气中的长期存在(100至150年),这促使科学界开展了关于大气中CO吸收和解吸的研究。这项工作展示了对基于氧化石墨烯(GO)的材料进行CO吸附的研究,例如通过环保方法获得的结构中具有不同氧化百分比(3.00%、5.25%和9.00%)的GO泡沫。在一个封闭系统中对CO吸附进行了表征,在该系统中放置了GO泡沫和其他CO吸附材料(沸石和硅胶)。通过控制化学反应来产生CO,以获得系统内的CO浓度曲线,并据此计算所研究材料的效率(86.28%至92.20%)、产率(60.10%至99.50%)以及CO吸附效果。所获得的结果表明,鉴于GO泡沫具有最高的CO吸附效率和产率,它们是用于碳捕获和新型清洁技术未来发展的一种有前景的材料。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bd28/10475065/bf20156f5b6e/41598_2023_41683_Fig1_HTML.jpg

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