Influence of Dissolved Organic Matter on Environmental Behavior and Biological Effects of Titanium Dioxide Nanoparticles
The interaction and effects of dissolved organic matter(DOM)with titanium dioxide nanoparticles(nTiO2)are a current focus of research.The widespread use of nTiO2 in various fields;necessitates an understand-ing of its complex relationship with DOM in the environment,which is crucial for both environmental protection and human health.Once in the environment,nTiO2 engages in multi-level physical and chemical interactions with DOM in aquatic systems.These interactions include coordination exchange,hydrophobic interactions,electrostatic forces,and intermolecular forces,leading to significant changes in nTiO2's physicochemical properties,such as surface charge,hydrophobicity,and surface functional groups.These changes affect the colloidal stability of nTiO2 in water and may alter its ability to migrate and transform environmental pollutants.Moreover,DOM's presence significantly impact the enrichment of nTiO2,free radical generation,and the biological effects it induces in biologi-cal systems.Recent research has provided important findings that deepen our understanding of the mechanisms and effects of DOM-nTiO2 interactions.Summarizing these outcomes enhances our comprehension of the key factors influencing DOM's impact on nTiO2 behavior in the environment,as well as its biological effects.This under-standing offers valuable guidance for future environmental protection and the application of nanomaterials.
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