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揭示结网络如何影响聚合深度环氧溶剂修饰磁性生物炭对胺类兴奋剂的捕获:将量子化学计算与实验结合起来

Shurui Cao¹, Xin Wei², Yao Tang³

¹Forensic Identification Center, Southwest University of Political Science and Law, Chongqing, 401120, China; Criminal Investigation Law School, Southwest University of Political Science and Law, Chongqing, 401120, China.

Environmental research

|September 2, 2024

概括

一种新的磁性生物炭有效地从水中吸收胺类刺激剂 (ATS). 这种材料显示了MDMA的高容量,由键相互作用驱动,为环境修复提供了一个有希望的解决方案.

科学领域:

环境化学环境化学
材料科学材料科学材料科学
分析化学分析化学

背景情况:

胺类兴奋剂 (ATS) 对公共安全和生态系统构成重大风险.
从水中去除ATS的有效方法对于环境保护至关重要.

研究的目的:

开发和描述一种新型吸附剂,以有效地去除四种被滥用的ATS (AMP,MAMP,MDA,MDMA).
研究吸附机制,重点关注吸附剂和ATS之间的结相互作用.
评估吸附剂在各种环境条件下的性能.

主要方法:

用于制备聚合深度欧性溶剂改性磁性果皮生物炭 (PMBC).
吸附实验以确定不同ATS的容量和选择性.
现代光谱分析 (例如,FTIR,XPS) 用于识别PMBC上的活性位点.
量子化学计算以阐明吸附机制和结合能.

主要成果:

PMBC对MDMA (926.13μg g−1) 的吸附能力很好,明显高于AMP,MAMP和MDA.
在PMBC上的活性中心 (-COOH, -NH2, -OH) 与ATS功能组形成了键网络.
在广泛的pH范围 (4-11) 和在无机离子和酸的存在下保持高吸附活性.
吸附顺序为MDMA>MDA>MAMP>AMP,由ATS结构和键能力解释.

结论:

PMBC是一种高效的吸附剂,用于从水中捕获ATS.
结合在ATS的选择性吸附中起着至关重要的作用.
这项研究为设计用于污染物清除的先进材料提供了基础.

关键词:

吸附方式吸附方式吸附方式氨基胺类型的兴奋剂结合的结合能量是结合的结合能量.量子化学计算量子化学计算弱相互作用的作用.

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