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Impact of CeO2 nanoparticles on the aggregation kinetics and stability of polystyrene nanoplastics: Importance of surface functionalization and solution chemistry

Water Research 2020 108 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 40 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Willie J.G.M. Peijnenburg, Xinde Cao, Hao Qiu, Cornelis A.M. van Gestel Xing Li, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Xing Li, Hao Qiu, Erkai He, Erkai He, Erkai He, Erkai He, Erkai He, Cornelis A.M. van Gestel Erkai He, Erkai He, Willie J.G.M. Peijnenburg, Xinde Cao, Willie J.G.M. Peijnenburg, Hao Qiu, Hao Qiu, Hao Qiu, Bing Xia, Erkai He, Xinde Cao, Hao Qiu, Erkai He, Erkai He, Erkai He, Bing Xia, Erkai He, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Cornelis A.M. van Gestel Cornelis A.M. van Gestel Cornelis A.M. van Gestel Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Cornelis A.M. van Gestel Cornelis A.M. van Gestel Cornelis A.M. van Gestel Cornelis A.M. van Gestel Cornelis A.M. van Gestel Cornelis A.M. van Gestel Cornelis A.M. van Gestel Cornelis A.M. van Gestel Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Cornelis A.M. van Gestel Cornelis A.M. van Gestel Cornelis A.M. van Gestel Cornelis A.M. van Gestel Cornelis A.M. van Gestel Cornelis A.M. van Gestel Cornelis A.M. van Gestel Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Erkai He, Erkai He, Hao Qiu, Hao Qiu, Hao Qiu, Xinde Cao, Xinde Cao, Xing Li, Hao Qiu, Cornelis A.M. van Gestel Hao Qiu, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Cornelis A.M. van Gestel Willie J.G.M. Peijnenburg, Xinde Cao, Xinde Cao, Erkai He, Cornelis A.M. van Gestel Willie J.G.M. Peijnenburg, Xinde Cao, Willie J.G.M. Peijnenburg, Erkai He, Erkai He, Willie J.G.M. Peijnenburg, Cornelis A.M. van Gestel Hao Qiu, Willie J.G.M. Peijnenburg, Hao Qiu, Hao Qiu, Xinde Cao, Erkai He, Erkai He, Hao Qiu, Hao Qiu, Cornelis A.M. van Gestel Cornelis A.M. van Gestel Xinde Cao, Hao Qiu, Hao Qiu, Hao Qiu, Cornelis A.M. van Gestel Willie J.G.M. Peijnenburg, Xinde Cao, Xinde Cao, Willie J.G.M. Peijnenburg, Erkai He, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Xinde Cao, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Hao Qiu, Xinde Cao, Xinde Cao, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Xinde Cao, Cornelis A.M. van Gestel Hao Qiu, Xinde Cao, Xinde Cao, Willie J.G.M. Peijnenburg, Hao Qiu, Cornelis A.M. van Gestel Xinde Cao, Willie J.G.M. Peijnenburg, Cornelis A.M. van Gestel Xinde Cao, Willie J.G.M. Peijnenburg, Hao Qiu, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Cornelis A.M. van Gestel Cornelis A.M. van Gestel Cornelis A.M. van Gestel Willie J.G.M. Peijnenburg, Cornelis A.M. van Gestel Hao Qiu, Hao Qiu, Hao Qiu, Hao Qiu, Xinde Cao, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Cornelis A.M. van Gestel Cornelis A.M. van Gestel Willie J.G.M. Peijnenburg, Hao Qiu, Hao Qiu, Xinde Cao, Hao Qiu, Xinde Cao, Cornelis A.M. van Gestel Cornelis A.M. van Gestel Willie J.G.M. Peijnenburg, Hao Qiu, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Cornelis A.M. van Gestel Cornelis A.M. van Gestel Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Willie J.G.M. Peijnenburg, Cornelis A.M. van Gestel Cornelis A.M. van Gestel Willie J.G.M. Peijnenburg, Cornelis A.M. van Gestel Cornelis A.M. van Gestel Cornelis A.M. van Gestel Cornelis A.M. van Gestel

Summary

Researchers used time-resolved dynamic light scattering to investigate how cerium dioxide nanoparticles influence the aggregation and stability of differently surface-functionalized polystyrene nanoplastics across multiple water chemistries. Results showed that CeO2 nanoparticles promoted heteroaggregation with nanoplastics, with natural organic matter and ionic strength modulating aggregate formation and the environmental mobility of nanoplastics.

Polymers

The increasing application of plastics is accompanied by increasing concern over the stability and potential risk of nanoplastics. Heteroaggregation with metal-based nanoparticles (e.g., CeO-NPs) is critical to the environmental mobility of nanoplastics, as they are likely to be jointly emitted to the aquatic environment. Here, time-resolved dynamic light scattering was employed to evaluate the influence of CeO-NPs on the aggregation kinetics of differentially surface functionalized polystyrene nanoplastics (PS-NPs) in various water types. Natural organic matters and ionic strength were dominating factors influencing the heteroaggregation of PS-NPs and CeO-NPs in surface waters. The critical coagulation concentrations of PS-NPs were dependent on their surface coatings, which decreased in the presence of CeO-NPs due to electrostatic attraction and/or specific adsorption. Incubation of PS-NPs and CeO-NPs under different pH confirmed the importance of electrostatic force in the aggregation of PS NPs. A relatively low humic acid (HA) concentration promoted the heteroaggregation of NH-coated PS-NPs and CeO-NPs because the introduction of a HA surface coating decreased the electrostatic hindrance. At high HA concentrations, the aggregation was inhibited by steric repulsion. The combined effects of high efficiency of double layer compression, bridging and complexation contributed to the high capacity of Ca in destabilizing the particles. These findings demonstrate that the environmental behavior of nanoplastics is influenced by the presence of other non-plastic particles and improve our understanding of the interactions between PS-NPs and CeO-NPs in complex and realistic aqueous environments.

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