Valorization of waste polyethylene terephthalate plastic into N-doped microporous carbon for CO2 capture through a one-pot synthesis
- Authors
- Yuan, Xiangzhou; Li, Shuangjun; Jeon, Sunbin; Deng, Shuai; Zhao, Li; Lee, Ki Bong
- Issue Date
- 15-11월-2020
- Publisher
- ELSEVIER
- Keywords
- Waste PET plastic; CO2 adsorption; Microporous carbon; Chemical activation; N-doping treatment
- Citation
- JOURNAL OF HAZARDOUS MATERIALS, v.399
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF HAZARDOUS MATERIALS
- Volume
- 399
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/51494
- DOI
- 10.1016/j.jhazmat.2020.123010
- ISSN
- 0304-3894
- Abstract
- Valorization of waste polyethylene terephthalate (PET) plastic into microporous carbon with N-doping treatment was successfully performed in a one-pot synthesis and the N-doped microporous carbon was used for CO2 capture, which can mitigate plastic pollution and climate change simultaneously. The PET-derived microporous carbon developed by KOH activation and urea treatment in a one-pot synthesis at 700 degrees C exhibited the highest CO2 adsorption uptake of 6.23 mmol g(-1) at 0 degrees C and 4.58 mmol g(-1) at 25 degrees C (1 aim). The Langmuir and pseudo second-order models displayed well-fitting relationships with equilibrium and kinetic experimental data obtained in this study. The N-doped microporous carbon showed high CO2 selectivity over N-2, implying that it is feasible for treating flue gases (10% CO2 and 90% N-2) at 50 degrees C. In addition, the CO2 uptake was not only affected by micropores but also related with nitrogen and oxygen functional groups. Compared to the porous carbon prepared by two-pot synthesis where KOH activation and urea treatment were conducted separately, the porous carbon prepared by one-pot synthesis had higher oxygen contents and higher CO2 adsorption uptake. All of findings implied that the N-doped microporous carbon was successfully developed from waste PET plastic for capturing CO2 and can play a promising role in both sustainable waste management and environmental protection.
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Collections - College of Engineering > Department of Chemical and Biological Engineering > 1. Journal Articles
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