烟草科技2026，Vol.59Issue(6)：1-12,12.DOI:10.16135/j.issn1002-0861.2025.0614
基于KOH活化的废弃烟秆衍生多孔炭制备及其薄荷醇吸附特性
Preparation of porous carbon derived from waste tobacco stalks by KOH activation and its ability to adsorb menthol
摘要
Abstract
Using waste tobacco stalks as biomass precursors,a series of porous carbon materials(CSB-X)were prepared with different chemical activators(KOH,K2CO3,ZnCl2),and their adsorption performance to menthol was systematically investigated.The structure and properties of the porous carbon materials were characterized by various methods such as SEM,TEM,BET,XRD,Raman,and XPS,and the adsorption experiment was conducted.The results showed that:1)The sample prepared by KOH activation(CSB-KOH)exhibited a well-developed microporous structure,with specific surface area of 2 481 m²/g,a high defect density(ID/IG=3.3),and abundant surface hydroxyl functional groups.2)CSB-KOH achieved a menthol adsorption of 826.3 mg/g.The adsorption kinetics followed a pseudo-second-order model,and the adsorption behavior was consistent with the Langmuir isotherm model,indicating that the adsorption process was dominated by monolayer adsorption.3)Structure-function relationship analysis revealed that KOH activation significantly increased the specific surface area of the carbon material,and led to a well-developed microporous structure,a higher defect density,and abundant surface functional groups.These structural features synergistically increased the effective adsorption sites,resulting in superior adsorption capacity of the carbon material.关键词
烟秆/生物质/多孔炭/KOH活化/吸附机理/薄荷醇Key words
Tobacco stalk/Biomass/Porous carbon/KOH activation/Adsorption mechanism/Menthol分类
轻工纺织引用本文复制引用
宋文静,陈欣羽,邓宏博,黄朝章,范坚强,邓小华,郑泉兴,邹冠驰,赖伟坤..基于KOH活化的废弃烟秆衍生多孔炭制备及其薄荷醇吸附特性[J].烟草科技,2026,59(6):1-12,12.基金项目
国家自然科学基金项目"硅基核壳催化剂微环境调控及其在生物质碳—氧键选择性氢解中的应用"(22272123)、"溶剂介导氢溢流调制强化生物质催化加氢反应机制研究"(22472124) （22272123）
福建中烟工业有限责任公司科技项目"烟草生物质催化转化制备高附加值产物的研究"(FJZYHZJH2023010). （FJZYHZJH2023010）
