Energy-efficient microwave heating for rapid fabrication of porous carbon nanofibers
High-temperature heat treatment is a crucial thermochemical process for pyrolysis/carbonization of carbon nanofibers (CNFs). However, the inefficient heat transfer process of traditional heating methods often results in inhomogeneous heating, low porosity, long preparation times, and high energy con...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127525001224 |
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| author | Haoyue Zhao Xinyu Li Fangqin Su Ning Qi Jian Fang |
| author_facet | Haoyue Zhao Xinyu Li Fangqin Su Ning Qi Jian Fang |
| author_sort | Haoyue Zhao |
| collection | DOAJ |
| description | High-temperature heat treatment is a crucial thermochemical process for pyrolysis/carbonization of carbon nanofibers (CNFs). However, the inefficient heat transfer process of traditional heating methods often results in inhomogeneous heating, low porosity, long preparation times, and high energy consumption. Here, we first use electrospinning and microwave heating techniques to rapidly fabricate porous CNFs with the help of microwave absorbers. To deeply understand the microwave heating mechanism and differences with traditional heating, we systematically investigate and analyze the effects of the type and concentration of the microwave absorbers, microwave heating parameters, and two heating mechanisms (microwave and traditional heating) on the fabrication of CNFs by experimental investigation and COMSOL simulations. Such microwave heating technique can enable an ultrafast heating rate (up to 250 °C min−1 on average). Due to the rapid internal and volumetric heating, CNFs prepared using microwave heating exhibit a larger carbon content (92.86 %) and a larger BET specific surface area (687 m2/g) than their counterparts prepared using traditional heating methods (88.49 % and 460.7 m2/g). Moreover, the possible mechanisms of microwave heating have been explained. This work paves the way for the fabrication of porous CNFs and other advanced carbon nanomaterials using microwave heating techniques. |
| format | Article |
| id | doaj-art-6e7a524b525a4171a9b2dcb9e1cc8403 |
| institution | Kabale University |
| issn | 0264-1275 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj-art-6e7a524b525a4171a9b2dcb9e1cc84032025-02-12T05:30:24ZengElsevierMaterials & Design0264-12752025-03-01251113702Energy-efficient microwave heating for rapid fabrication of porous carbon nanofibersHaoyue Zhao0Xinyu Li1Fangqin Su2Ning Qi3Jian Fang4College of Textile and Clothing Engineering, Soochow University, Suzhou, JiangSu 215123, ChinaCollege of Textile and Clothing Engineering, Soochow University, Suzhou, JiangSu 215123, ChinaCollege of Textile and Clothing Engineering, Soochow University, Suzhou, JiangSu 215123, ChinaCollege of Textile and Clothing Engineering, Soochow University, Suzhou, JiangSu 215123, ChinaCorresponding author.; College of Textile and Clothing Engineering, Soochow University, Suzhou, JiangSu 215123, ChinaHigh-temperature heat treatment is a crucial thermochemical process for pyrolysis/carbonization of carbon nanofibers (CNFs). However, the inefficient heat transfer process of traditional heating methods often results in inhomogeneous heating, low porosity, long preparation times, and high energy consumption. Here, we first use electrospinning and microwave heating techniques to rapidly fabricate porous CNFs with the help of microwave absorbers. To deeply understand the microwave heating mechanism and differences with traditional heating, we systematically investigate and analyze the effects of the type and concentration of the microwave absorbers, microwave heating parameters, and two heating mechanisms (microwave and traditional heating) on the fabrication of CNFs by experimental investigation and COMSOL simulations. Such microwave heating technique can enable an ultrafast heating rate (up to 250 °C min−1 on average). Due to the rapid internal and volumetric heating, CNFs prepared using microwave heating exhibit a larger carbon content (92.86 %) and a larger BET specific surface area (687 m2/g) than their counterparts prepared using traditional heating methods (88.49 % and 460.7 m2/g). Moreover, the possible mechanisms of microwave heating have been explained. This work paves the way for the fabrication of porous CNFs and other advanced carbon nanomaterials using microwave heating techniques.http://www.sciencedirect.com/science/article/pii/S0264127525001224Microwave heatingCarbon nanofibersMicrowave absorberTraditional heatingElectrospinning |
| spellingShingle | Haoyue Zhao Xinyu Li Fangqin Su Ning Qi Jian Fang Energy-efficient microwave heating for rapid fabrication of porous carbon nanofibers Materials & Design Microwave heating Carbon nanofibers Microwave absorber Traditional heating Electrospinning |
| title | Energy-efficient microwave heating for rapid fabrication of porous carbon nanofibers |
| title_full | Energy-efficient microwave heating for rapid fabrication of porous carbon nanofibers |
| title_fullStr | Energy-efficient microwave heating for rapid fabrication of porous carbon nanofibers |
| title_full_unstemmed | Energy-efficient microwave heating for rapid fabrication of porous carbon nanofibers |
| title_short | Energy-efficient microwave heating for rapid fabrication of porous carbon nanofibers |
| title_sort | energy efficient microwave heating for rapid fabrication of porous carbon nanofibers |
| topic | Microwave heating Carbon nanofibers Microwave absorber Traditional heating Electrospinning |
| url | http://www.sciencedirect.com/science/article/pii/S0264127525001224 |
| work_keys_str_mv | AT haoyuezhao energyefficientmicrowaveheatingforrapidfabricationofporouscarbonnanofibers AT xinyuli energyefficientmicrowaveheatingforrapidfabricationofporouscarbonnanofibers AT fangqinsu energyefficientmicrowaveheatingforrapidfabricationofporouscarbonnanofibers AT ningqi energyefficientmicrowaveheatingforrapidfabricationofporouscarbonnanofibers AT jianfang energyefficientmicrowaveheatingforrapidfabricationofporouscarbonnanofibers |