{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,7]],"date-time":"2026-10-07T00:41:34Z","timestamp":1791333694461,"version":"4.3.1"},"reference-count":32,"publisher":"MDPI AG","issue":"17","license":[{"start":{"date-parts":[[2025,8,31]],"date-time":"2025-08-31T00:00:00Z","timestamp":1756598400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Natural Science Foundation of China","award":["5220-4236"],"award-info":[{"award-number":["5220-4236"]}]},{"name":"National Natural Science Foundation of China","award":["24JS032"],"award-info":[{"award-number":["24JS032"]}]},{"name":"key Laboratory Project of the Education Department of Shaanxi Province","award":["5220-4236"],"award-info":[{"award-number":["5220-4236"]}]},{"name":"key Laboratory Project of the Education Department of Shaanxi Province","award":["24JS032"],"award-info":[{"award-number":["24JS032"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>The safe and efficient capture of CO2 in confined environments such as coal mine goafs remains a significant challenge, posing both environmental and safety risks. To address this issue, this study developed a novel biomass-based aerogel adsorbent using CNF-C and CS through sol\u2013gel synthesis and freeze-drying. A series of composite aerogels with varying mass ratios were systematically characterized by SEM, BET, FTIR, and TG-DSC to analyze their microstructure, specific surface area, pore characteristics, chemical properties, and thermal stability. A constant temperature and humidity experimental setup was specially designed to explore the effects of various temperatures, humidity, and material ratios on CO2 adsorption performance. FTIR analysis confirmed that -NH2 served as the primary adsorption site, with its density increasing with higher chitosan content. The 1:3 ratio exhibited the optimal specific surface area (7.05 m2\/g) and thermal stability, withstanding temperatures up to 350.0 \u00b0C, while the 1:1 ratio demonstrated the highest porosity (80.74%). Adsorption experiments indicated that 35.0 \u00b0C and 50% humidity were the optimal conditions, under which the 1:2 ratio biomass aerogel achieved an 18% increase in CO2 adsorption capacity compared to room temperature. The sample with a 1:1 high cellulose ratio is primarily dominated by physical adsorption, making its performance susceptible to environmental fluctuations. The sample with a 1:3 high chitosan ratio is predominantly governed by chemical adsorption, exhibiting more stable adsorption characteristics. The 1:2 ratio achieved the best balance under 35.0 \u00b0C and 50% humidity. The biomass aerogel synergistically combined physical barriers from its three-dimensional network structure and chemical adsorption via active functional groups, enabling efficient CO2 capture and stable sequestration. This study demonstrates the feasibility of biomass-derived aerogels for CO2 adsorption under complex conditions and provides new insights into the design of sustainable materials for environmental remediation and carbon reduction applications.<\/jats:p>","DOI":"10.3390\/polym17172375","type":"journal-article","created":{"date-parts":[[2025,9,1]],"date-time":"2025-09-01T14:02:46Z","timestamp":1756735366000},"page":"2375","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Effect of Temperature and Relative Humidity on CO2 Adsorption Performance of Biomass-Derived Aerogels"],"prefix":"10.3390","volume":"17","author":[{"given":"Zujin","family":"Bai","sequence":"first","affiliation":[{"name":"School of Safety Science and Engineering, Xi\u2019an University of Science and Technology (XUST), Xi\u2019an 710054, China"},{"name":"Key Laboratory of Mine Exploitation and Disaster Prevention in Western China (XUST), Ministry of Education, Xi\u2019an 710054, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shuyao","family":"Ren","sequence":"additional","affiliation":[{"name":"School of Safety Science and Engineering, Xi\u2019an University of Science and Technology (XUST), Xi\u2019an 710054, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jun","family":"Deng","sequence":"additional","affiliation":[{"name":"School of Safety Science and Engineering, Xi\u2019an University of Science and Technology (XUST), Xi\u2019an 710054, China"},{"name":"Key Laboratory of Mine Exploitation and Disaster Prevention in Western China (XUST), Ministry of Education, Xi\u2019an 710054, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chang","family":"Su","sequence":"additional","affiliation":[{"name":"School of Safety Science and Engineering, Xi\u2019an University of Science and Technology (XUST), Xi\u2019an 710054, China"},{"name":"Key Laboratory of Mine Exploitation and Disaster Prevention in Western China (XUST), Ministry of Education, Xi\u2019an 710054, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Furu","family":"Kang","sequence":"additional","affiliation":[{"name":"School of Safety Science and Engineering, Xi\u2019an University of Science and Technology (XUST), Xi\u2019an 710054, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yifan","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Safety Science and Engineering, Xi\u2019an University of Science and Technology (XUST), Xi\u2019an 710054, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,8,31]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"107489","DOI":"10.1016\/j.psep.2025.107489","article-title":"Advances and Prospects in the Risk Prediction and Early Warning Technology for the compound disaster of coal spontaneous combustion and gas explosion","volume":"201 Pt A","author":"Deng","year":"2025","journal-title":"Process Saf. 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