纳米塑料与纳米活性炭在纯水环境的凝聚行为  

Heteroaggregation Behavior of Polystyrene Nanoplastics with Nanosized Activated Carbon in Pure Water Environment

作　　者：梁萃华 李丽华 梁宝月 李致欣 刘嘉蕊 王军华 张锦瑾 陈澄宇 LIANG Cui-hua;LI Li-hua;LIANG Bao-yue;LI Zhi-xin;LIU Jia-rui;WANG Jun-hua;ZHANG Jin-jin;CHEN Cheng-yu(College of Natural Resources and Environment,South China Agricultural University,Guangdong Guangzhou 510642,China)

机构地区：[1]华南农业大学资源环境学院,广东广州510642

出　　处：《广州化工》2024年第2期200-203,220,共5页GuangZhou Chemical Industry

基　　金：广东省基础与应用基础研究基金项目(No:2021A1515011503);广州市基础与应用基础研究项目(No:202201010505)。

摘　　要：随着塑料制品在水生环境中不断破碎,纳米塑料(NPs)可能会与共存的纳米活性炭(NAC)相互作用,从而影响其环境行为。采用动态光散射法(DLS)技术,研究了不同表面功能化的NPs在纯水环境中与NAC的异型凝聚影响。结果表明,带氨基(APS)的NPs比不带官能团(BPS)的NPs与NAC之间的异型凝聚作用更强;且NPs∶NAC浓度比为1∶4时凝聚速率最快。本研究探讨了不同表面功能化的NPs与NAC异型凝聚机制,为研究水环境中NPs迁移转化以及NAC环境污染原位修复提供了科学依据。As plastic products break down into small particles,nanoplastics(NPs)might coexist with the intentionally or unintentionally released nanosized activated carbon(NAC),impacting their behavior in aquatic environments.Using dynamic light scattering(DLS)technology,how different surface-functionalized NPs influenced the heterogeneous aggregation of NAC in pure water was investigated.The results revealed that the electrostatic attraction between NPs with amino groups(APS)and NAC was greater than that of NPs without functional groups(BPS),leading to stronger heteroaggregation.Additionally,NAC concentration influenced aggregation rate within the 1∶1 to 1∶4 ratio range.As NAC concentration rises,the aggregation rate increased,with the optimal ratio being 1∶4(NPs∶NAC).This research delved into the mechanisms governing cohesion between NPs and NAC,illuminating the stability,migration,and transformation of NPs in complex aquatic environments.These findings offered valuable and scientific insights for the in-situ application of NAC materials in mitigating environmental pollution.

关 键 词：聚苯乙烯纳米颗粒 纳米活性炭 纯水环境 异型凝聚 凝聚动力学 

分 类 号：X522[环境科学与工程—环境工程]