{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T03:14:25Z","timestamp":1791515665410,"version":"4.3.4"},"reference-count":56,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2023,3,21]],"date-time":"2023-03-21T00:00:00Z","timestamp":1679356800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education","award":["2020R1I1A3052258"],"award-info":[{"award-number":["2020R1I1A3052258"]}]},{"name":"the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education","award":["S3060516"],"award-info":[{"award-number":["S3060516"]}]},{"name":"the Ministry of SMEs and Startups (MSS, Republic of Korea), the Technology Development Program","award":["2020R1I1A3052258"],"award-info":[{"award-number":["2020R1I1A3052258"]}]},{"name":"the Ministry of SMEs and Startups (MSS, Republic of Korea), the Technology Development Program","award":["S3060516"],"award-info":[{"award-number":["S3060516"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>Through a solution method utilizing benzoxazine chemistry, heteroatoms containing porous carbons (HCPCs) were synthesized from melamine, eugenol and formaldehyde, followed by carbonization in a nitrogen atmosphere and chemical activation with KOH at three different activation temperatures, 700, 800 and 900 \u00b0C. The introduction of melamine and eugenol to the monomer produced structurally bonded nitrogen and oxygen in porous carbons. Changing the calcination temperature can alter the doping level of heteroatoms and the particle size. These carbon materials exhibit large pore size distributions, tunable pore structure, high nitrogen and oxygen contents and high surface areas, which make them suitable for use as electrode materials in supercapacitors. As a result of activating at 800 \u00b0C, the sample HCPC-800 exhibits a high specific surface area of 984 m2\/g, high oxygen and nitrogen content (3.64\u20136.26 wt.% and 10.61\u201313.65 wt.%), hierarchical pore structure, high degree of graphitization and good electrical conductivity. An outstanding rate capability is also demonstrated, as well as incredible longevity, retaining the capacitance up to 83% even after 5000 cycles in a solution containing 1 M H2SO4. Moreover, the activated porous carbon containing nitrogen exhibits a CO2 adsorption capacity of 3.6 and 3.5 mmol\/g at 25 \u00b0C and 0 \u00b0C, respectively, which corresponds to equilibrium pressures of 1 bar.<\/jats:p>","DOI":"10.3390\/polym15061564","type":"journal-article","created":{"date-parts":[[2023,3,22]],"date-time":"2023-03-22T06:00:01Z","timestamp":1679464801000},"page":"1564","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":20,"title":["Heteroatom-Enhanced Porous Carbon Materials Based on Polybenzoxazine for Supercapacitor Electrodes and CO2 Capture"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1089-2615","authenticated-orcid":false,"given":"Thirukumaran","family":"Periyasamy","sequence":"first","affiliation":[{"name":"School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shakila Parveen","family":"Asrafali","sequence":"additional","affiliation":[{"name":"School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Seong-Cheol","family":"Kim","sequence":"additional","affiliation":[{"name":"School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,3,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"717","DOI":"10.1039\/C0EE00277A","article-title":"Nitrogen-containing microporous carbon nanospheres with improved capacitive properties","volume":"4","author":"Su","year":"2011","journal-title":"Energy Environ. 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