Heteroaggregation and sedimentation of natural goethite and artificial Fe3O4 nanoparticles with polystyrene nanoplastics in water
Abstract Iron oxide nanomaterials play important roles in biogeochemical processes. This study investigates the effects of representative natural carbonaceous materials (humic acid [HA] and extracellular polymeric substances [EPS]) and cations on the heteroaggregation and sedimentation of engineered...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Springer
2024-04-01
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| Series: | Carbon Research |
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| Online Access: | https://doi.org/10.1007/s44246-024-00107-2 |
| _version_ | 1797199103076073472 |
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| author | Aiming Wu Chunyan Yang Xiaoli Zhao Junyu Wang Weigang Liang Xia Wang Lingfeng Zhou Miaomiao Teng Guoqing Hou Lin Niu Zhi Tang Fengchang Wu |
| author_facet | Aiming Wu Chunyan Yang Xiaoli Zhao Junyu Wang Weigang Liang Xia Wang Lingfeng Zhou Miaomiao Teng Guoqing Hou Lin Niu Zhi Tang Fengchang Wu |
| author_sort | Aiming Wu |
| collection | DOAJ |
| description | Abstract Iron oxide nanomaterials play important roles in biogeochemical processes. This study investigates the effects of representative natural carbonaceous materials (humic acid [HA] and extracellular polymeric substances [EPS]) and cations on the heteroaggregation and sedimentation of engineered and natural iron oxide nanomaterials with montmorillonite and sulfate- and amine-modified polystyrene (PS) nanoparticles (NPs) (S- and N-PS NPs, respectively) in water, assessing their environmental behavior and differences in colloidal stability parameters. In addition, a novel extended Derjaguin–Landau–Verwey–Overbeek theory (XDLVO) was developed to describe the mechanism of colloidal behavior that concurrently considers gravitational and magnetic attraction forces. In CaCl2 solution and most natural water samples, negatively charged S-PS NPs promoted heteroaggregation with goethite and iron oxide (Fe3O4) NPs more than positively charged N-PS NPs with increased nanoplastic particle concentration. In seawater, the introduction of S- and N-PS NPs increased the maximum net energy (barrier) (ΦMAX) of heteroaggregation and sedimentation with goethite and Fe3O4 NPs, facilitating dispersal and suspension of the system. The X-ray photoelectron spectroscopy (XPS) and molecular dynamics simulation results suggested that Ca2+ forms bridging interactions between Fe3O4 and S-PS NPs to promote aggregation, while competitive adsorption occurs between the N atoms of N-PS NPs and Ca2+ on the surface of Fe3O4 NPs. The study findings will help to improve the understanding of interfacial processes affecting ions at nanomaterial/water interfaces and assessments of the geochemical behavior and ecological risks of nanoplastics. |
| first_indexed | 2024-04-24T07:10:26Z |
| format | Article |
| id | doaj.art-0f969c1d2e5941ec8e726faaed49aee5 |
| institution | Directory Open Access Journal |
| issn | 2731-6696 |
| language | English |
| last_indexed | 2024-04-24T07:10:26Z |
| publishDate | 2024-04-01 |
| publisher | Springer |
| record_format | Article |
| series | Carbon Research |
| spelling | doaj.art-0f969c1d2e5941ec8e726faaed49aee52024-04-21T11:31:49ZengSpringerCarbon Research2731-66962024-04-013111810.1007/s44246-024-00107-2Heteroaggregation and sedimentation of natural goethite and artificial Fe3O4 nanoparticles with polystyrene nanoplastics in waterAiming Wu0Chunyan Yang1Xiaoli Zhao2Junyu Wang3Weigang Liang4Xia Wang5Lingfeng Zhou6Miaomiao Teng7Guoqing Hou8Lin Niu9Zhi Tang10Fengchang Wu11State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental SciencesState Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental SciencesState Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental SciencesState Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental SciencesState Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental SciencesState Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental SciencesState Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental SciencesState Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental SciencesState Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental SciencesState Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental SciencesState Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental SciencesState Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental SciencesAbstract Iron oxide nanomaterials play important roles in biogeochemical processes. This study investigates the effects of representative natural carbonaceous materials (humic acid [HA] and extracellular polymeric substances [EPS]) and cations on the heteroaggregation and sedimentation of engineered and natural iron oxide nanomaterials with montmorillonite and sulfate- and amine-modified polystyrene (PS) nanoparticles (NPs) (S- and N-PS NPs, respectively) in water, assessing their environmental behavior and differences in colloidal stability parameters. In addition, a novel extended Derjaguin–Landau–Verwey–Overbeek theory (XDLVO) was developed to describe the mechanism of colloidal behavior that concurrently considers gravitational and magnetic attraction forces. In CaCl2 solution and most natural water samples, negatively charged S-PS NPs promoted heteroaggregation with goethite and iron oxide (Fe3O4) NPs more than positively charged N-PS NPs with increased nanoplastic particle concentration. In seawater, the introduction of S- and N-PS NPs increased the maximum net energy (barrier) (ΦMAX) of heteroaggregation and sedimentation with goethite and Fe3O4 NPs, facilitating dispersal and suspension of the system. The X-ray photoelectron spectroscopy (XPS) and molecular dynamics simulation results suggested that Ca2+ forms bridging interactions between Fe3O4 and S-PS NPs to promote aggregation, while competitive adsorption occurs between the N atoms of N-PS NPs and Ca2+ on the surface of Fe3O4 NPs. The study findings will help to improve the understanding of interfacial processes affecting ions at nanomaterial/water interfaces and assessments of the geochemical behavior and ecological risks of nanoplastics.https://doi.org/10.1007/s44246-024-00107-2Iron oxide nanomaterialsHeteroaggregationSedimentationExtended Derjaguin − Landau − Verwey − Overbeek (XDLVO)Molecular Dynamics Simulation |
| spellingShingle | Aiming Wu Chunyan Yang Xiaoli Zhao Junyu Wang Weigang Liang Xia Wang Lingfeng Zhou Miaomiao Teng Guoqing Hou Lin Niu Zhi Tang Fengchang Wu Heteroaggregation and sedimentation of natural goethite and artificial Fe3O4 nanoparticles with polystyrene nanoplastics in water Carbon Research Iron oxide nanomaterials Heteroaggregation Sedimentation Extended Derjaguin − Landau − Verwey − Overbeek (XDLVO) Molecular Dynamics Simulation |
| title | Heteroaggregation and sedimentation of natural goethite and artificial Fe3O4 nanoparticles with polystyrene nanoplastics in water |
| title_full | Heteroaggregation and sedimentation of natural goethite and artificial Fe3O4 nanoparticles with polystyrene nanoplastics in water |
| title_fullStr | Heteroaggregation and sedimentation of natural goethite and artificial Fe3O4 nanoparticles with polystyrene nanoplastics in water |
| title_full_unstemmed | Heteroaggregation and sedimentation of natural goethite and artificial Fe3O4 nanoparticles with polystyrene nanoplastics in water |
| title_short | Heteroaggregation and sedimentation of natural goethite and artificial Fe3O4 nanoparticles with polystyrene nanoplastics in water |
| title_sort | heteroaggregation and sedimentation of natural goethite and artificial fe3o4 nanoparticles with polystyrene nanoplastics in water |
| topic | Iron oxide nanomaterials Heteroaggregation Sedimentation Extended Derjaguin − Landau − Verwey − Overbeek (XDLVO) Molecular Dynamics Simulation |
| url | https://doi.org/10.1007/s44246-024-00107-2 |
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