| 张睿,王璐颖,黄健,林春香.羧基化改性纤维素及其对苯丙胺的吸附性能研究[J].中国造纸学报,2025,40(1):93-104 |
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| 羧基化改性纤维素及其对苯丙胺的吸附性能研究 |
| Carboxylated Modified Cellulose and Its Adsorption Properties for Amphetamine |
| 投稿时间：2023-12-14 修订日期：2024-01-29 |
| DOI：10.11981/j.issn.1000-6842.2025.01.93 |
| 中文关键词: 纤维素 羧基化改性 苯丙胺 高效液相色谱法 |
| Key Words:cellulose carboxylic modification amphetamine high performance liquid chromatography |
| 基金项目:国家自然科学基金（22208057）；福建省自然科学基金（2020J01506）。 |
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| 中文摘要: |
| 本研究以纤维素为原料，采用多元酸酐对其进行酯化改性，制备羧基化改性纤维素材料（Cell-COOH）。采用单因素实验对Cell-COOH的制备条件进行优化，对Cell-COOH的结构进行表征，并对其吸附性能及行为进行研究。结果表明，在纤维素与均苯四甲酸酐质量比1∶3、反应温度115 ℃、反应时间1.5 h的条件下，制备的Cell-COOH对20 mg/L苯丙胺溶液的平衡吸附量为34.59 mg/g；Cell-COOH对苯丙胺的吸附行为符合Langmuir等温吸附模型和准二级动力学模型，主要为单分子层化学吸附，吸附过程为自发的放热反应；同时，Cell-COOH经7次连续吸附-解吸循环实验后，对苯丙胺的吸附量可达到首次吸附的92.64%，具有良好的稳定性及可重复使用性能。 |
| Abstract: |
| In this study， cellulose was used as the raw material， and it was esterified by polyacidic anhydride to prepare the carboxylated modified cellulose material （Cell-COOH）.The preparation conditions of Cell-COOH were optimized through one-factor experiment， the structure of Cell-COOH was characterized， and its adsorption properties and behaviors were investigated. The results showed that the equilibrium adsorption capacity of Cell-COOH on 20 mg/L amphetamine solution was 34.59 mg/g under the conditions of cellulose to homophthalic anhydride mass ratio of 1∶3， reaction temperature of 115 ℃， and reaction time of 1.5 h. The adsorption behavior of Cell-COOH towards amphetamine was in accordance with the Langmuir isothermal model and the pseudo-second kinetic model， which was mainly single-layer-chemisorption， and the adsorption process was a self-motivated exothermic reaction. The adsorption capacity of Cell-COOH towards amphetamine was 92.64% of first adsorption after 7 cycles of adsorption-desorption experiments， showing a good stability and reusability. |
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