Enhanced Assembling of N-and-K-Riched Macroalgae as Carbon Adsorbent for CO<sub>2</sub> Capture with Ni(NO<sub>3</sub>)<sub>2</sub>/KOH as Co-Catalysts
Porous-activated carbons have drawn great attention due to their important role in CO<sub>2</sub> capture. Ni(NO<sub>3</sub>)<sub>2</sub>/KOH, as co-catalysts under different temperatures, were studied to obtain porous graphitized carbon from <i>Sargassum ho...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-08-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/28/17/6242 |
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| author | Huijuan Ying Ganning Zeng Yaohong He Yanjun Hou Ning Ai |
| author_facet | Huijuan Ying Ganning Zeng Yaohong He Yanjun Hou Ning Ai |
| author_sort | Huijuan Ying |
| collection | DOAJ |
| description | Porous-activated carbons have drawn great attention due to their important role in CO<sub>2</sub> capture. Ni(NO<sub>3</sub>)<sub>2</sub>/KOH, as co-catalysts under different temperatures, were studied to obtain porous graphitized carbon from <i>Sargassum horneri</i> feedstock. The results indicated that the properties of the porous graphitized carbon generated at 850 °C were greatly enhanced, showing a large specific surface area of 1486.38 cm<sup>3</sup>·g<sup>−1</sup> with narrowly distributed micropores (~0.67 nm) and abundant functional groups, which endowed high CO<sub>2</sub> uptake; moreover, the high CO<sub>2</sub> uptake was mainly attributed to the synergistic effect of Ni(NO<sub>3</sub>)<sub>2</sub> and KOH, both in chemical modification and pore formation. The fitted values of the four kinetic models showed that the double exponential model provided the best description of carbon adsorption, indicating both physical and chemical adsorption. It is worth noting that carbon could be reused four times in the adsorption/desorption procedure in this research with good stability. This work focuses on the high-value-added comprehensive utilization of macroalgae, which not only is important for high-performance adsorbent preparation but also has positive benefits for the development and utilization of macroalgae resources. |
| first_indexed | 2024-03-10T23:17:30Z |
| format | Article |
| id | doaj.art-8738981aba844f29abbf59f0de23d6ce |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T23:17:30Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-8738981aba844f29abbf59f0de23d6ce2023-11-19T08:33:15ZengMDPI AGMolecules1420-30492023-08-012817624210.3390/molecules28176242Enhanced Assembling of N-and-K-Riched Macroalgae as Carbon Adsorbent for CO<sub>2</sub> Capture with Ni(NO<sub>3</sub>)<sub>2</sub>/KOH as Co-CatalystsHuijuan Ying0Ganning Zeng1Yaohong He2Yanjun Hou3Ning Ai4College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, ChinaCollege of Environment, Zhejiang University of Technology, Hangzhou 310014, ChinaCollege of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, ChinaCollege of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, ChinaCollege of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, ChinaPorous-activated carbons have drawn great attention due to their important role in CO<sub>2</sub> capture. Ni(NO<sub>3</sub>)<sub>2</sub>/KOH, as co-catalysts under different temperatures, were studied to obtain porous graphitized carbon from <i>Sargassum horneri</i> feedstock. The results indicated that the properties of the porous graphitized carbon generated at 850 °C were greatly enhanced, showing a large specific surface area of 1486.38 cm<sup>3</sup>·g<sup>−1</sup> with narrowly distributed micropores (~0.67 nm) and abundant functional groups, which endowed high CO<sub>2</sub> uptake; moreover, the high CO<sub>2</sub> uptake was mainly attributed to the synergistic effect of Ni(NO<sub>3</sub>)<sub>2</sub> and KOH, both in chemical modification and pore formation. The fitted values of the four kinetic models showed that the double exponential model provided the best description of carbon adsorption, indicating both physical and chemical adsorption. It is worth noting that carbon could be reused four times in the adsorption/desorption procedure in this research with good stability. This work focuses on the high-value-added comprehensive utilization of macroalgae, which not only is important for high-performance adsorbent preparation but also has positive benefits for the development and utilization of macroalgae resources.https://www.mdpi.com/1420-3049/28/17/6242microporousKOHmacroalgaeCO<sub>2</sub> adsorption |
| spellingShingle | Huijuan Ying Ganning Zeng Yaohong He Yanjun Hou Ning Ai Enhanced Assembling of N-and-K-Riched Macroalgae as Carbon Adsorbent for CO<sub>2</sub> Capture with Ni(NO<sub>3</sub>)<sub>2</sub>/KOH as Co-Catalysts Molecules microporous KOH macroalgae CO<sub>2</sub> adsorption |
| title | Enhanced Assembling of N-and-K-Riched Macroalgae as Carbon Adsorbent for CO<sub>2</sub> Capture with Ni(NO<sub>3</sub>)<sub>2</sub>/KOH as Co-Catalysts |
| title_full | Enhanced Assembling of N-and-K-Riched Macroalgae as Carbon Adsorbent for CO<sub>2</sub> Capture with Ni(NO<sub>3</sub>)<sub>2</sub>/KOH as Co-Catalysts |
| title_fullStr | Enhanced Assembling of N-and-K-Riched Macroalgae as Carbon Adsorbent for CO<sub>2</sub> Capture with Ni(NO<sub>3</sub>)<sub>2</sub>/KOH as Co-Catalysts |
| title_full_unstemmed | Enhanced Assembling of N-and-K-Riched Macroalgae as Carbon Adsorbent for CO<sub>2</sub> Capture with Ni(NO<sub>3</sub>)<sub>2</sub>/KOH as Co-Catalysts |
| title_short | Enhanced Assembling of N-and-K-Riched Macroalgae as Carbon Adsorbent for CO<sub>2</sub> Capture with Ni(NO<sub>3</sub>)<sub>2</sub>/KOH as Co-Catalysts |
| title_sort | enhanced assembling of n and k riched macroalgae as carbon adsorbent for co sub 2 sub capture with ni no sub 3 sub sub 2 sub koh as co catalysts |
| topic | microporous KOH macroalgae CO<sub>2</sub> adsorption |
| url | https://www.mdpi.com/1420-3049/28/17/6242 |
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