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从水溶液中高效和选择性地去除阴离子染料,使用带有正电荷的混合网络的聚烯胺/桃糖糖多糖化物/亚塔普尔吉特复合水凝

Haicun Yang¹, Kaide Wu², Jianbo Zhu³

¹Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, People's Republic of China; National Experimental Demonstration Center for Materials Science and Engineering (Changzhou University), Changzhou, Jiangsu 213164, People's Republic of China.

International journal of biological macromolecules

|March 29, 2024

概括

经过修改的桃子多糖化物 (PGP) 和亚特普尔吉特 (ATP) 用于制造先进的多烯胺 (PAAm) 水凝. 这些新型水凝吸附剂在从水中去除阳离子染料方面表现出高效率.

科学领域:

材料科学材料科学材料科学
环境化学环境化学
聚合物科学聚合物科学

背景情况:

桃子多糖 (PGP) 在吸附率和选择性方面表现出局限性.
聚烯胺 (PAAm) 水凝具有较低的吸附能力.
需要进行化学修饰以提高水凝吸附剂的性能.

研究的目的:

在化学上将PGP定制成氨化PGP (APGP) 和四分化PGP (QPGP).
为了使阿塔普尔吉特 (ATP) 具有离子组和碳-碳双键的双功能化.
为了合成和评估PAAm/APGP和PAAm/QPGP/ATP水凝用于阳离子染料吸附.

主要方法:

使用氧化还原聚合来合成PAAm/APGP和PAAm/QPGP/ATP水凝.
描述技术包括FTIR,SEM,XPS,TGA,TEM和BET. 这三种技术是最重要的.
用新型素 (NC) 和酸盐 (TTZ) 作为模型离子染料来评估染料吸附性能.

主要成果:

与PAAm/APGP相比,PAAm/APGP/ATP水凝显示出更高的吸附率,容量,稳定性和选择性.
吸附平衡在约20分钟内达成,遵循伪二次动力学和兰迈尔异热模型.
这种PAAm/QPGP/ATP水凝实现了高吸附能力,NC为873.235 mg/g,TTZ为731.432 mg/g.

结论:

化学修饰的PGP和双功能化的ATP显著提高了PAAm水凝在离子染料去除方面的性能.
该PAAm/QPGP/ATP水凝显示出优良的吸附性能,包括快速的动力学和高容量.
这种新型的水凝吸附剂具有在废水处理中实际应用的巨大潜力.

关键词:

在Attapulgite中使用.水凝吸附剂是一种吸附剂.桃子多糖化物桃子多糖化物

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