Polyacrylonitrile-derived nitrogen enriched porous carbon fiber with high CO2 capture performance
Separation and Purification Technology, cilt.303, 2022 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 303
- Basım Tarihi: 2022
- Doi Numarası: 10.1016/j.seppur.2022.122299
- Dergi Adı: Separation and Purification Technology
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Biotechnology Research Abstracts, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Pollution Abstracts, Civil Engineering Abstracts
- Anahtar Kelimeler: CO2 adsorption, Fiber morphology, K2CO3 activation, N-doping, Porous carbon fiber
- Boğaziçi Üniversitesi Adresli: Hayır
Özet
Carbon dioxide capture and storage are considered a creative strategy for eliminating the catastrophic effect of global warming. The main concept in the present paper is to prepare nitrogen (N)-doping microporous carbon fibers and investigate their CO2 adsorption and separation process. Herein, N-doped porous carbon with an abundance of nitrogen groups (N doping > 15 wt%), a preserved fibril morphology, a BET surface area of 2434 m2/g together with a pore volume of 1.23 cm3 g−1 was produced from polyacrylonitrile fiber via chemical activation of K2CO3. The optimal porous carbon fiber sample has CO2 adsorption capacity of up to 3.83 and 5.84 mmol g−1 at 25 and 0 °C under 1 bar, respectively, a fast adsorption rate and high selectivity of the CO2 over N2. It has been found that the maintained fibrous morphology, the micro–mesoporous structure, and plentiful basic N-containing functionalities within the carbon framework all contribute to the outstanding CO2 capture performance.