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随着氢能存储与CO2捕集技术的发展，高比表面积炭材料成为研究热点。本文以明胶为原料，磷酸为活化剂，炭化活化法制备了一种高比表面积亚微孔丰富的明胶基炭材料PAC,并通过BET、元素分析、红外光谱、XRD等进行表征。结果表明，所制备的PAC比表面积达到2 130.2 m2·g-1,氮元素含量为12.2%。磷酸高温活化使炭化料的碳结构更加有序，并侵蚀生成较多的亚微孔，保留了炭化料的N—H、O—H、C=C、C—N和酰胺基团等大量官能团。首次利用明胶基炭材料实现亚微孔调控，对CO2、H2的吸附量达到77.92 cm3·g-1和119.37 cm3·g-1。
Abstract：With the development of hydrogen energy storage and CO2 capture technologies, carbon materials with high specific surface area have become a research hotspot.In this paper, a gelatin-based carbon material(PAC) with high specific surface area and abundant submicropores was prepared by carbonization activation method using gelatin as raw material and phosphoric acid as activator.The material was characterized by BET,elemental analysis, infrared spectroscopy and XRD.The results show that the prepared PAC has a specific surface area of 2 130.2 m2·g-1 and the nitrogen content of 12.2%.The high temperature activation of phosphoric acid makes the carbon structure of the carbonized material more orderly, and etches into more submicropores, retaining a large number of functional groups such as N—H,O—H,C=C,C—N and amide groups of the carbonized material.Submicropore regulation was achieved for the first time in gelatin-based carbon materials, with adsorption capacities for CO2 and H2reaching 77.92 cm3·g-1 and 119.37 cm3·g-1,respectively.
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基本信息:
DOI：10.14078/j.cnki.1001-3741.2025.04.008
中图分类号:TQ127.11
引用信息:
[1]梁天,李海朝.磷酸法高比表面积明胶基炭材料的制备[J].炭素技术,2025,44(04):52-57.DOI:10.14078/j.cnki.1001-3741.2025.04.008.
基金信息:
青海民族大学研究生创新项目(12M2021005); 青海省重点研发与转化计划(2022-QY-210)