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61,005 resultsShowing papers similar to Interfacial quantum chemical characterization of aromatic organic matter adsorption on oxidized microplastic surfaces
ClearAdsorption of some hazardous aromatic hydrocarbons by various pristine and heat-activated aged microplastics as potential pollutant carriers in aquatic environment
Researchers examined how pristine and heat-aged microplastics of four polymer types adsorb hazardous aromatic hydrocarbons, finding that aging significantly altered adsorption capacity. The results demonstrate that weathered microplastics may act as more effective pollutant vectors than pristine particles in aquatic environments.
Adsorption of naphthalene and its derivatives onto high-density polyethylene microplastic: Computational, isotherm, thermodynamic, and kinetic study
Researchers investigated how naphthalene and its methyl and hydroxyl derivatives adsorb onto high-density polyethylene microplastics, finding that functional group type significantly influences adsorption behavior through different thermodynamic and kinetic mechanisms.
Aging characteristics of polylatic acid microplastics and their adsorption on hydrophilic organic pollutants: mechanistic investigations and theoretical calculations
Researchers characterized how polylactic acid microplastics undergo UV and thermal aging in aquatic environments, finding that aging altered surface chemistry, increased hydrophilicity, and enhanced adsorption of heavy metal pollutants—raising concerns about aged biodegradable plastics as carriers of co-contaminants.
Evaluating the effect of different modified microplastics on the availability of polycyclic aromatic hydrocarbons
Researchers investigated how weathering processes alter the ability of polyethylene microplastics to affect the bioavailability of polycyclic aromatic hydrocarbons, finding that etching and UV aging increased surface oxygen groups, specific surface area, and pore volume. Free PAH concentrations decreased with increasing microplastic concentration for most hydrophobic PAHs, and UV aging only slightly altered sorption coefficients compared to pristine microplastics.
Investigating the adsorption of organic compounds onto microplastics via experimental, simulation, and prediction methods
This review systematically examined experimental, simulation, and predictive modeling approaches for studying the adsorption of organic compounds onto microplastics, synthesizing findings on how molecular interactions, environmental conditions, and plastic aging affect microplastic vector behavior for organic pollutants.
Surface functional groups determine adsorption of pharmaceuticals and personal care products on polypropylene microplastics
Researchers found that surface functional groups on aged polypropylene microplastics determined their adsorption capacity for pharmaceuticals and personal care products, with aged plastic showing much higher pollutant uptake than fresh plastic due to weathering-induced surface changes.
The effect of polymer aging on the uptake of fuel aromatics and ethers by microplastics
Researchers found that UV weathering and aging of microplastics significantly increased their sorption of fuel-related aromatic contaminants (BTEX) and ethers compared to virgin plastics. The results suggest that aged microplastics in the environment, which have higher surface oxidation, accumulate higher concentrations of fuel-related contaminants than fresh plastic particles.
Impact of UV-B Photoaging on Chlorpyrifos Adsorption by PET Microplastics: Insights from Experimental and DFT Analysis
Researchers studied how UV-B light aging changes the ability of PET microplastics to absorb the pesticide chlorpyrifos, combining laboratory experiments with computational modeling. They found that aging created new surface functional groups on the microplastics that significantly increased their capacity to bind the pesticide. The findings suggest that weathered microplastics in the environment may carry higher loads of harmful chemicals than fresh plastic particles.
Response surface methodology for modeling the adsorptive uptake of phenol from aqueous solution using adsorbent polyethylene terephthalate microplastics
Researchers used response surface methodology to model the adsorption of phenol from water using pristine, modified, and aged polyethylene terephthalate (PET) microplastics, finding that microplastics can act as vectors for organic pollutants in aquatic environments.
Adsorption behaviors of microplastics from packaging materials subjected to ultraviolet irradiation and microbial colonization
Researchers studied how UV irradiation and microbial colonization alter the surface properties of microplastics from discarded packaging materials and their ability to adsorb pollutants. They found that aging processes changed surface chemistry and hydrophilicity, affecting how microplastics interact with contaminants like crystal violet dye through hydrogen bonding, electrostatic attraction, and hydrophobic interactions.
Multi-mechanistic adsorption of pharmaceuticals and personal care products on oxidized microplastics: Oxidation processes, mechanisms, and environmental implications
Researchers reviewed how weathering and oxidation change microplastic surfaces, making them better at absorbing pharmaceuticals and personal care product chemicals from water. The modified surfaces attract these contaminants through multiple chemical forces, meaning aged microplastics in the environment act as enhanced carriers for drug and cosmetic pollutants.
Influence of aging on the affinity between microplastics and organic contaminants
Researchers investigated how UV and UV+H2O2 aging affects the capacity of polystyrene microplastics to adsorb and release pesticides and other organic contaminants, finding that aging-induced surface changes significantly altered adsorption affinity and desorption behavior compared to unaged controls.
New insights on aging mechanism of microplastics using PARAFAC analysis: Impact on 4-nitrophenol removal via Statistical Physics Interpretation
Aging of PET microplastics under Fenton oxidation and seawater conditions produced different surface changes, and aged particles showed enhanced adsorption of 4-nitrophenol compared to virgin PET, suggesting that environmental weathering increases the capacity of microplastics to carry organic contaminants.
Change in adsorption behavior of aquatic humic substances on microplastic through biotic and abiotic aging processes
Researchers found that both UV irradiation and microbial aging of polyethylene microplastics significantly altered their surface chemistry, changing how aquatic humic substances adsorb onto the plastic surface and highlighting the importance of weathering state in assessing microplastic-contaminant interactions.
Effects of hydroxyl group content on adsorption and desorption of anthracene and anthrol by polyvinyl chloride microplastics
Researchers investigated how increasing hydroxyl group content in anthracene derivatives affects their adsorption and desorption behavior on polyvinyl chloride microplastics, finding that higher hydroxylation reduced adsorption affinity and increased desorption rates. The results indicate that pollutant chemical structure significantly governs contaminant-microplastic interactions and environmental fate.
Insights into adsorption mechanisms of nitro polycyclic aromatic hydrocarbons on common microplastic particles: Experimental studies and modeling
Researchers investigated how nitro polycyclic aromatic hydrocarbons adsorb onto common microplastics, finding that the process is controlled by chemical adsorption and hydrophobic partitioning, with pollutant hydrophobicity being the dominant factor influencing adsorption capacity.
Assessing the adsorption coefficient of diverse chemicals on polyethylene microplastics through a QSPR approach
Researchers developed a quantitative structure-property relationship (QSPR) model using 3D molecular descriptors to predict the adsorption coefficients of diverse organic chemicals — including persistent, mobile, and toxic compounds — onto polyethylene microplastics, finding that adsorption correlated positively with lipophilicity and negatively with hydroxyl groups and polarity, with strict external validation confirming model reliability.
Assessing the adsorption coefficient of diverse chemicals on polyethylene microplastics through a QSPR approach
Researchers developed a quantitative structure-property relationship (QSPR) model using 3D molecular descriptors to predict the adsorption coefficients of diverse organic chemicals — including persistent, mobile, and toxic compounds — onto polyethylene microplastics, finding that adsorption correlated positively with lipophilicity and negatively with hydroxyl groups and polarity, with strict external validation confirming model reliability.
Adsorption behaviors of chlorpyrifos on UV aged microplastics
Researchers investigated how UV aging affects the adsorption of the pesticide chlorpyrifos on biodegradable and non-degradable microplastics, finding that UV irradiation significantly modified plastic surfaces and enhanced their capacity to carry organic pollutants.
Aging of microplastics increases their adsorption affinity towards organic contaminants
Researchers found that microplastics that have been weathered by sunlight and environmental exposure absorb significantly more chemical pollutants than fresh microplastics, with up to a 4.7-fold increase in adsorption. Ultraviolet exposure changes the surface chemistry of the plastics, making them stickier for contaminants. This matters because most microplastics in nature are weathered, meaning they may be carrying more toxic chemicals into the food chain than laboratory studies using new plastics would suggest.
Sorption behaviors of petroleum on micro-sized polyethylene aging for different time in seawater
Researchers found that aging of polyethylene microplastics in seawater over 180 days progressively increased petroleum adsorption capacity, with surface oxidation and roughening from weathering creating more binding sites for hydrocarbon contaminants.
Microplastics and organic contaminants: Investigation of the sorption process on different polymer types
Researchers investigated sorption of organic contaminants onto microplastics collected from environmental samples, finding that real-world MPs had different sorption capacities than laboratory-prepared particles due to surface aging, biofouling, and co-sorption of natural organic matter.
Molecular level insight into the different interaction intensity between microplastics and aromatic hydrocarbon in pure water and seawater
Researchers found that microplastics have stronger affinity for aromatic hydrocarbons in seawater than in pure water, with molecular dynamics simulations and density functional theory revealing that salinity-induced changes in surface characteristics and ionic interactions drive enhanced pollutant sorption.
Adsorption of phenanthrene and its monohydroxy derivatives on polyvinyl chloride microplastics in aqueous solution: Model fitting and mechanism analysis
Researchers investigated the adsorption of phenanthrene and its four monohydroxy derivatives on polyvinyl chloride microplastics in aqueous solution, finding that phenanthrene adsorption was higher than that of its hydroxylated forms. The data fitted pseudo-second-order kinetics and Freundlich isotherm models, indicating that hydroxyl functional groups on pollutant molecules reduce their affinity for PVC microplastic surfaces.