| 郑雪琴,吴志浩,杨桂芳,叶晓霞.氨化纤维素基气凝胶的制备及其对阿散酸的吸附行为研究[J].中国造纸,2022,41(9):26-35 |
 二维码(扫一下试试看!) |
| 氨化纤维素基气凝胶的制备及其对阿散酸的吸附行为研究 |
| Preparation of Ammoniated Cellulose Aerogel and Its Adsorption Behavior for p-Arsanilic Acid |
| 收稿日期:2022-04-21 |
| DOI:10.11980/j.issn.0254-508X.2022.09.004 |
| 关键词: 纤维素基气凝胶 聚乙烯亚胺 吸附 阿散酸 |
| Key Words:cellulose-based aerogel polyethyleneimine adsorption p-arsanilic acid |
| 基金项目:国家自然科学基金面上项目(21577018);福建船政交通职业学院科研项目(000201000-X19108002)。 |
| 作者 | 单位 | 邮编 | | 郑雪琴 | 福建船政交通职业学院安全与环境学院,福建福州,350007 | 350007 | | 吴志浩 | 福州大学环境与安全工程学院,福建福州,350108 | 350108 | | 杨桂芳* | 福建省海洋生物多样性保护与永续利用重点实验室,福建福州,350108 闽江学院海洋研究院,福建福州,350108 | 350108 | | 叶晓霞 | 福州大学环境与安全工程学院,福建福州,350108 | 350108 |
|
| 摘要点击次数: 4420 |
| 全文下载次数: 3053 |
| 摘要:以纤维素为原料,利用表面氨化交联聚乙烯亚胺(PEI)制备了一种对阿散酸(p-ASA)具有高效吸附效果的功能化纤维素基气凝胶(Cell@PEI)。结果表明,三维块状的Cell@PEI具有独特的多孔结构、较大的比表面积(241.4 m2/g),且PEI的引入丰富了气凝胶表面的官能团,增强了Cell@PEI中的静电和氢键相互作用,促进了其对p-ASA的吸附。Cell@PEI对p-ASA的吸附符合Freundlich吸附等温模型和准二级吸附动力学模型,最大吸附量为205.6 mg/g。利用NaOH溶液对Cell@PEI气凝胶进行解吸再生5次后,其对p-ASA的去除率仍在70%以上。 |
| Abstract:A functionalized cellulose-based aerogel (Cell@PEI) with high adsorption efficiency for p-arsanilic acid (p-ASA) was fabricated by crosslinking surface ammoniated polyethyleneimine (PEI) with cellulose. The results showed that the three-dimensional massive Cell@PEI had a unique porous structure with a large specific surface area of 241.4 m2/g. Moreover, the introduction of PEI enriched the functional groups on the surface of the aerogel, enhanced the electrostatic interaction and hydrogen bonding in Cell@PEI, promoting the adsorption towards p-ASA. The adsorption capacity of Cell@PEI was 205.6 mg/g in maximum, which was in accordance with the Freundlich adsorption isotherm model and pseudo-second-order adsorption kinetics model. In addition, the removal of p-ASA was still above 70% by Cell@PEI aerogel after desorption and regeneration in NaOH solution for 5 times. |
| 查看全文
HTML
查看/发表评论 下载PDF阅读器 |