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对纳米生物炭聚合的分子机械学见解,在溶解有机物中通过芳香成分调节的纳米生物炭聚合

Zheng Zhou¹, Meng Lu², Yu Huang³

¹Yunnan Provincial Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500 Yunnan, China.

Environment international

|February 28, 2025

概括

在水中的纳米生物炭 (NBC) 聚合受到离子和溶解有机物 (DOM) 的影响. DOM中的芳香结构,如酸,可以缓解NBC聚合,改善其用于污染物补救的用途.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
物理化学物理化学

背景情况:

纳米生物炭 (NBC) 显示出水中污染物修复的前景.
离子和溶解有机物 (DOM) 可以对NBC聚合和有效性产生负面影响.
了解NBC聚合对于其实际应用至关重要.

研究的目的:

为了研究在离子和模型DOM的存在下NBC的聚合行为.
阐明在不同条件下管理NBC聚合的机制.
确定规范NBC聚合的策略,以加强整治.

主要方法:

批量聚合实验和经典的德贾古因 - 兰道 - 维维 - 欧贝克 (DLVO) 理论.
里叶变换离子循环子共振质谱 (FTICR-MS) 和3D激发发射 (3D-EEM) 光光谱学.
密度函数理论 (DFT) 的计算和并行因子分析 (PARAFAC).

主要成果:

NBC聚合动力学遵循DLVO理论,受范德瓦尔斯力和静电排斥的影响.
单价/双价电解质促进了聚合,而富尔维酸 (FA) 调节了它,特别是较高分子量分数.
芳香结构,特别是DOM中的类物质,与电解质复合,减少NBC聚合.

结论:

DOM,特别是芳香化合物,可以有效地调节水生环境中的NBC聚合.
涉及DOM的策略可以提高NBC应用的性能和降低生态风险.
这项研究提供了对复杂水生系统中纳米粒子行为的洞察.

关键词:

聚合调节聚合调节复杂化的复杂化溶解的有机物质是有机物质.里埃转换离子循环子共振质谱学纳米颗粒纳米颗粒

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