Porous Carbon Nanofibers with Sulfur and Oxygen Composite Surfaces Derived from Ultrafine Polypropylene Fibers in Waste Masks for CO2 Adsorption

Heteroatom-doped porous carbon nanofibers exhibit strong potential for CO2 adsorption, owing to their unique morphology and physicochemical properties. However, their large-scale application has been restricted by complex synthesis procedures and the high cost of conventional precursors. In this stu...

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Publié dans:Langmuir : the ACS journal of surfaces and colloids. - 1985. - 41(2025), 37 vom: 23. Sept., Seite 25524-25534
Auteur principal: Shi, Rui (Auteur)
Autres auteurs: Wang, Shuyu, Kou, Jianyu, Qiao, Musen, Li, Yun, Li, Liqing
Format: Article en ligne
Langue:English
Publié: 2025
Accès à la collection:Langmuir : the ACS journal of surfaces and colloids
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520 |a Heteroatom-doped porous carbon nanofibers exhibit strong potential for CO2 adsorption, owing to their unique morphology and physicochemical properties. However, their large-scale application has been restricted by complex synthesis procedures and the high cost of conventional precursors. In this study, porous carbon nanofibers (ACFs) with S-O composite surfaces were synthesized using ultrafine polypropylene fibers (PP) from waste masks as precursors. PP was stabilized through temperature-time-controlled sulfonation, followed by one-step carbonization and activation with KOH and ZnCl2 at 800 and 600 °C, respectively. The resulting materials showed a high total pore volume (1.33-1.65 cm3·g-1) and substantial S-O content (7.85-13.19 atom %). They achieved excellent CO2 adsorption capacities of 3.69-4.73 mmol·g-1 (0 °C, 1 bar) and CO2/N2 selectivities of 13-19, surpassing those of porous carbon fibers derived from commercial polyacrylonitrile. The enhanced CO2 uptake was attributed to the synergistic effect of the S-O surface active sites located in slit pores with a pore size of 1.1 nm. This work demonstrates a cost-effective approach for producing porous carbon nanofibers and offers a sustainable route for converting waste into materials for environmental and energy applications 
650 4 |a Journal Article 
700 1 |a Wang, Shuyu  |e verfasserin  |4 aut 
700 1 |a Kou, Jianyu  |e verfasserin  |4 aut 
700 1 |a Qiao, Musen  |e verfasserin  |4 aut 
700 1 |a Li, Yun  |e verfasserin  |4 aut 
700 1 |a Li, Liqing  |e verfasserin  |4 aut 
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