{"title":"Urea-Modified Lignin-Derived Nitrogen-Doped Porous Carbon Materials: Synthesis and CO2 Adsorption Properties","authors":"Siriguleng Bao, Yong Sheng Bao, Agula Bao","doi":"10.1002/macp.202400427","DOIUrl":null,"url":null,"abstract":"<p>Lignin has a high carbon content, but the production of porous carbon materials from it is challenging because of its complex structure and stable physicochemical properties. In this study, nitrogen-doped porous carbon materials are prepared by impregnating lignin with urea, using potassium hydroxide (KOH) as an activator. The physicochemical properties of the samples are investigated using various characterization methods. The results showed that the CO<sub>2</sub> adsorption capacity of the sample LUN-10-7, which has a urea solution concentration of 10% and an immersion time of 7 days, is 3.80 mmol g<sup>−1</sup> at 1 bar and 298 K. The characterization results indicated that the abundant pore structure and excellent surface chemistry enhanced the sample's CO<sub>2</sub> adsorption performance. Additionally, the sample demonstrated high CO<sub>2</sub>/N<sub>2</sub> selectivity and cyclic stability, making it suitable for practical applications as an adsorbent.</p>","PeriodicalId":18054,"journal":{"name":"Macromolecular Chemistry and Physics","volume":"226 6","pages":""},"PeriodicalIF":2.5000,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Macromolecular Chemistry and Physics","FirstCategoryId":"92","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/macp.202400427","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
引用次数: 0
Abstract
Lignin has a high carbon content, but the production of porous carbon materials from it is challenging because of its complex structure and stable physicochemical properties. In this study, nitrogen-doped porous carbon materials are prepared by impregnating lignin with urea, using potassium hydroxide (KOH) as an activator. The physicochemical properties of the samples are investigated using various characterization methods. The results showed that the CO2 adsorption capacity of the sample LUN-10-7, which has a urea solution concentration of 10% and an immersion time of 7 days, is 3.80 mmol g−1 at 1 bar and 298 K. The characterization results indicated that the abundant pore structure and excellent surface chemistry enhanced the sample's CO2 adsorption performance. Additionally, the sample demonstrated high CO2/N2 selectivity and cyclic stability, making it suitable for practical applications as an adsorbent.
期刊介绍：
Macromolecular Chemistry and Physics publishes in all areas of polymer science - from chemistry, physical chemistry, and physics of polymers to polymers in materials science. Beside an attractive mixture of high-quality Full Papers, Trends, and Highlights, the journal offers a unique article type dedicated to young scientists – Talent.
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