Cited by 162Carbon Dioxide Capture TechnologiesIndustrial Gas Emission ControlCO2 Sequestration and Geologic Interactions

Valorization of waste polyethylene terephthalate plastic into N-doped microporous carbon for CO2 capture through a one-pot synthesis

Yuan, Xiangzhou, Li, Shuangjun, Jeon, Sunbin, Deng, Shuai, Zhao, Li, Lee, Ki Bong·2020·Journal of Hazardous Materials

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 CO 2 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 °C exhibited the highest CO 2 adsorption uptake of 6.23 mmol g-1 at 0 °C and 4.58 mmol g-1 at 25 °C (1 atm). 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 CO 2 selectivity over N 2, implying that it is feasible for treating flue gases (10% CO 2 and 90% N 2) at 50 °C. In addition, the CO 2 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 CO 2 adsorption uptake. All of findings implied that the N-doped microporous carbon was successfully developed from waste PET plastic for capturing CO 2 and can play a promising role in both sustainable waste management and environmental protection.

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Crossref · 10.1016/j.jhazmat.2020.123010

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  • The synthesized microporous carbon possesses a large specific surface area, facilitating synergistic enhancement of adsorption by surface nitrogen/oxygen functional groups.

    “Material analysis indicated that the synthesized microporous carbon possessed a large specific surface area, facilitating synergistic enhancement of adsorption by surface nitrogen/oxygen functional groups.”
  • One-pot synthesis with simultaneous KOH activation and urea nitrogen doping at 700 °C converts waste PET plastic into nitrogen-doped microporous carbon that exhibits good adsorption performance in CO2 capture.

    “Yuan and colleagues employed a one-pot synthesis strategy, simultaneously achieving KOH activation and urea nitrogen doping at 700 °C to convert waste PET plastic into nitrogen-doped microporous carbon, which exhibited good adsorption performance in CO 2 capture applications [69] .”

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Authors
Yuan, X., Li, S., Jeon, S., Deng, S., Zhao, L., & Lee, K. B.
Affiliations
  • Korea University (KR)
  • Tianjin University (CN)
Corresponding author
Lee, Ki Bong
Venue
Journal of Hazardous Materials
Publisher
Elsevier BV
Published
2020-11
Volume
399
Pages
123010
ISSN
0304-3894 (ISSN-L)
OpenAlex
W3031015867
Cited by
162
References
46
Citations by year
2026: 12 · 2025: 37 · 2024: 29 · 2023: 33 · 2022: 35 · 2021: 13 · 2020: 3
FWCI
10.33
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Hazardous Materials (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Research Foundation of Korea (NRF-2020R1A2C2010815)
  • Korea-China Joint Research Program (NRF-2018K1A3A1A20025653)
  • Korean government’s Ministry of Science and ICT
Topics
  • Physical Sciences › Engineering › Mechanical Engineering › Carbon Dioxide Capture Technologies
  • Physical Sciences › Engineering › Mechanical Engineering › Industrial Gas Emission Control
  • Physical Sciences › Environmental Science › Environmental Engineering › CO2 Sequestration and Geologic Interactions
Keywords
PET waste, plastic valorization, CO2 capture, one-pot synthesis, KOH activation, urea treatment, CO2 adsorption, flue gas treatment, nitrogen and oxygen functional groups, plastic pollution, waste plastic recycling

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