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Urea-Predoped, KOH-Activated, Corn Stover-Derived Carbon for CO2 Adsorption.

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Τίτλος: Urea-Predoped, KOH-Activated, Corn Stover-Derived Carbon for CO2 Adsorption.
Συγγραφείς: Dang Y; Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu, China.; School of Automobile and Transportation, Xihua University, Chengdu, China., Chen Z; School of Automobile and Transportation, Xihua University, Chengdu, China., Zhang C; Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu, China.; School of Automobile and Transportation, Xihua University, Chengdu, China., Han Z; Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu, China., Zuo Z; Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu, China., Liang K; Department of Engineering and Design, University of Sussex, Brighton, UK., Fang J; Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu, China.; Sichuan Yilan Zhichuang Technology Co., Ltd., Chengdu, China.
Πηγή: Annals of the New York Academy of Sciences [Ann N Y Acad Sci] 2026 Sep; Vol. 1563 (1), pp. e70406.
Τύπος έκδοσης: Journal Article
Γλώσσα: English
Στοιχεία περιοδικού: Publisher: New York Academy of Sciences Country of Publication: United States NLM ID: 7506858 Publication Model: Print Cited Medium: Internet ISSN: 1749-6632 (Electronic) Linking ISSN: 00778923 NLM ISO Abbreviation: Ann N Y Acad Sci Subsets: MEDLINE
Imprint Name(s): Publication: 2006- : New York, NY : Malden, MA : New York Academy of Sciences ; Blackwell
Original Publication: New York, The Academy.
Ιατρικοί όροι (MeSH): Zea mays*/chemistry , Carbon Dioxide*/chemistry , Hydroxides*/chemistry , Urea*/chemistry , Potassium Compounds*/chemistry , Carbon*/chemistry, Adsorption
Περίληψη: The rising concentration of greenhouse gases causes severe global warming, creating an urgent need for efficient and low-cost carbon dioxide (CO2) adsorption technologies. Corn stover is an abundant agricultural waste that is often underutilized, leading to resource waste and environmental pollution. To develop value-added utilization of this material, corn stover-derived activated carbon is prepared via urea predoping and controlled potassium hydroxide (KOH) etching, while the effects of pyrolysis temperature, urea doping ratio, KOH dosage, and activation temperature are investigated. Under pure CO2 at 25°C, the optimal adsorbent exhibits an equilibrium CO2 adsorption capacity of 3.57 mmol·g-1. Under pure CO2 at 0°C, the equilibrium capacity increases to 5.91 mmol·g-1, indicating that lower temperature favors CO2 physical adsorption. Under a typical flue gas composition of 20% CO2/80% N2 at 25°C, the adsorbent achieves a CO2 uptake of 1.78 mmol·g-1 after 50 min. The adsorbent exhibits an ideal adsorbed solution theory CO2/N2 selectivity of 30.92. The isosteric heat of adsorption ranges from 28.42 to 23.75 kJ·mol-1. These values suggest predominantly physical adsorption on heterogeneous sites associated with nitrogen functionalities and structural defects. This study offers insights into the design of biomass-derived CO2 adsorbents based on corn stover.
(© 2026 New York Academy of Sciences.)
References: Int J Biol Macromol. 2025 Feb;289:138919. (PMID: 39701241)
iScience. 2025 Jul 16;28(8):113127. (PMID: 40761295)
Chem Asian J. 2018 May 18;:. (PMID: 29774662)
ACS Omega. 2021 Mar 11;6(11):7739-7745. (PMID: 33778284)
J Environ Manage. 2025 Nov;394:127539. (PMID: 41043342)
Ann N Y Acad Sci. 2025 Oct;1552(1):388-400. (PMID: 40859597)
RSC Adv. 2022 Nov 18;12(51):33069-33078. (PMID: 36425171)
Langmuir. 2024 Oct 22;40(42):22108-22122. (PMID: 39387190)
Environ Pollut. 2025 Apr 01;370:125899. (PMID: 39986558)
J Colloid Interface Sci. 2022 Feb 15;608(Pt 2):1827-1836. (PMID: 34742091)
J Colloid Interface Sci. 2021 Jan 15;582(Pt A):90-101. (PMID: 32814226)
RSC Adv. 2019 Aug 28;9(46):27050-27059. (PMID: 35528601)
Molecules. 2025 Mar 04;30(5):. (PMID: 40076383)
Bioresour Technol. 2023 Dec;390:129824. (PMID: 37852507)
Grant Information: 2024ZDZX0042 Sichuan Science and Technology Program
Contributed Indexing: Keywords: adsorption performance; agricultural waste; biomass‐derived activated carbon; carbon dioxide adsorption; corn stover
Substance Nomenclature: 142M471B3J (Carbon Dioxide)
WZH3C48M4T (potassium hydroxide)
0 (Hydroxides)
8W8T17847W (Urea)
0 (Potassium Compounds)
7440-44-0 (Carbon)
Entry Date(s): Date Created: 20260916 Date Completed: 20260916 Latest Revision: 20260918
Update Code: 20260918
PubMed Central ID: PMC13580276
DOI: 10.1111/nyas.70406
PMID: 42747253
Βάση Δεδομένων: MEDLINE
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  Data: Urea-Predoped, KOH-Activated, Corn Stover-Derived Carbon for CO<subscript>2</subscript> Adsorption.
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  Data: <searchLink fieldCode="AU" term="%22Dang+Y%22">Dang Y</searchLink>; Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu, China.; School of Automobile and Transportation, Xihua University, Chengdu, China.<br /><searchLink fieldCode="AU" term="%22Chen+Z%22">Chen Z</searchLink>; School of Automobile and Transportation, Xihua University, Chengdu, China.<br /><searchLink fieldCode="AU" term="%22Zhang+C%22">Zhang C</searchLink>; Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu, China.; School of Automobile and Transportation, Xihua University, Chengdu, China.<br /><searchLink fieldCode="AU" term="%22Han+Z%22">Han Z</searchLink>; Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu, China.<br /><searchLink fieldCode="AU" term="%22Zuo+Z%22">Zuo Z</searchLink>; Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu, China.<br /><searchLink fieldCode="AU" term="%22Liang+K%22">Liang K</searchLink>; Department of Engineering and Design, University of Sussex, Brighton, UK.<br /><searchLink fieldCode="AU" term="%22Fang+J%22">Fang J</searchLink>; Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu, China.; Sichuan Yilan Zhichuang Technology Co., Ltd., Chengdu, China.
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  Data: <i>Publication</i>: 2006- : New York, NY : Malden, MA : New York Academy of Sciences ; Blackwell<br /><i>Original Publication</i>: New York, The Academy.
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  Data: <searchLink fieldCode="MM" term="%22Zea+mays%22">Zea mays*</searchLink>/<searchLink fieldCode="MM" term="%22Zea+mays+chemistry%22">chemistry</searchLink> <br /><searchLink fieldCode="MM" term="%22Carbon+Dioxide%22">Carbon Dioxide*</searchLink>/<searchLink fieldCode="MM" term="%22Carbon+Dioxide+chemistry%22">chemistry</searchLink> <br /><searchLink fieldCode="MM" term="%22Hydroxides%22">Hydroxides*</searchLink>/<searchLink fieldCode="MM" term="%22Hydroxides+chemistry%22">chemistry</searchLink> <br /><searchLink fieldCode="MM" term="%22Urea%22">Urea*</searchLink>/<searchLink fieldCode="MM" term="%22Urea+chemistry%22">chemistry</searchLink> <br /><searchLink fieldCode="MM" term="%22Potassium+Compounds%22">Potassium Compounds*</searchLink>/<searchLink fieldCode="MM" term="%22Potassium+Compounds+chemistry%22">chemistry</searchLink> <br /><searchLink fieldCode="MM" term="%22Carbon%22">Carbon*</searchLink>/<searchLink fieldCode="MM" term="%22Carbon+chemistry%22">chemistry</searchLink><br /><searchLink fieldCode="MH" term="%22Adsorption%22">Adsorption</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The rising concentration of greenhouse gases causes severe global warming, creating an urgent need for efficient and low-cost carbon dioxide (CO<subscript>2</subscript>) adsorption technologies. Corn stover is an abundant agricultural waste that is often underutilized, leading to resource waste and environmental pollution. To develop value-added utilization of this material, corn stover-derived activated carbon is prepared via urea predoping and controlled potassium hydroxide (KOH) etching, while the effects of pyrolysis temperature, urea doping ratio, KOH dosage, and activation temperature are investigated. Under pure CO<subscript>2</subscript> at 25°C, the optimal adsorbent exhibits an equilibrium CO<subscript>2</subscript> adsorption capacity of 3.57 mmol·g<superscript>-1</superscript>. Under pure CO<subscript>2</subscript> at 0°C, the equilibrium capacity increases to 5.91 mmol·g<superscript>-1</superscript>, indicating that lower temperature favors CO<subscript>2</subscript> physical adsorption. Under a typical flue gas composition of 20% CO<subscript>2</subscript>/80% N<subscript>2</subscript> at 25°C, the adsorbent achieves a CO<subscript>2</subscript> uptake of 1.78 mmol·g<superscript>-1</superscript> after 50 min. The adsorbent exhibits an ideal adsorbed solution theory CO<subscript>2</subscript>/N<subscript>2</subscript> selectivity of 30.92. The isosteric heat of adsorption ranges from 28.42 to 23.75 kJ·mol<superscript>-1</superscript>. These values suggest predominantly physical adsorption on heterogeneous sites associated with nitrogen functionalities and structural defects. This study offers insights into the design of biomass-derived CO<subscript>2</subscript> adsorbents based on corn stover.<br /> (© 2026 New York Academy of Sciences.)
– Name: Ref
  Label: References
  Group: RefInfo
  Data: Int J Biol Macromol. 2025 Feb;289:138919. (PMID: <searchLink fieldCode="PM" term="%2239701241%22">39701241)</searchLink><br />iScience. 2025 Jul 16;28(8):113127. (PMID: <searchLink fieldCode="PM" term="%2240761295%22">40761295)</searchLink><br />Chem Asian J. 2018 May 18;:. (PMID: <searchLink fieldCode="PM" term="%2229774662%22">29774662)</searchLink><br />ACS Omega. 2021 Mar 11;6(11):7739-7745. (PMID: <searchLink fieldCode="PM" term="%2233778284%22">33778284)</searchLink><br />J Environ Manage. 2025 Nov;394:127539. (PMID: <searchLink fieldCode="PM" term="%2241043342%22">41043342)</searchLink><br />Ann N Y Acad Sci. 2025 Oct;1552(1):388-400. (PMID: <searchLink fieldCode="PM" term="%2240859597%22">40859597)</searchLink><br />RSC Adv. 2022 Nov 18;12(51):33069-33078. (PMID: <searchLink fieldCode="PM" term="%2236425171%22">36425171)</searchLink><br />Langmuir. 2024 Oct 22;40(42):22108-22122. (PMID: <searchLink fieldCode="PM" term="%2239387190%22">39387190)</searchLink><br />Environ Pollut. 2025 Apr 01;370:125899. (PMID: <searchLink fieldCode="PM" term="%2239986558%22">39986558)</searchLink><br />J Colloid Interface Sci. 2022 Feb 15;608(Pt 2):1827-1836. (PMID: <searchLink fieldCode="PM" term="%2234742091%22">34742091)</searchLink><br />J Colloid Interface Sci. 2021 Jan 15;582(Pt A):90-101. (PMID: <searchLink fieldCode="PM" term="%2232814226%22">32814226)</searchLink><br />RSC Adv. 2019 Aug 28;9(46):27050-27059. (PMID: <searchLink fieldCode="PM" term="%2235528601%22">35528601)</searchLink><br />Molecules. 2025 Mar 04;30(5):. (PMID: <searchLink fieldCode="PM" term="%2240076383%22">40076383)</searchLink><br />Bioresour Technol. 2023 Dec;390:129824. (PMID: <searchLink fieldCode="PM" term="%2237852507%22">37852507)</searchLink>
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  Data: <i>Keywords: </i>adsorption performance; agricultural waste; biomass‐derived activated carbon; carbon dioxide adsorption; corn stover
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        Value: 10.1111/nyas.70406
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        Text: English
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        StartPage: e70406
    Subjects:
      – SubjectFull: Adsorption
        Type: general
      – SubjectFull: Zea mays chemistry
        Type: general
      – SubjectFull: Carbon Dioxide chemistry
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        Type: general
    Titles:
      – TitleFull: Urea-Predoped, KOH-Activated, Corn Stover-Derived Carbon for CO2 Adsorption.
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              Text: 2026 Sep
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