A5046089573- Nanoparticles: synthesis and applications
- Skin Protection and Aging
- Microplastics and Plastic Pollution
- Water Quality and Pollution Assessment
- Fullerene Chemistry and Applications
- Carbon Nanotubes in Composites
- Environmental remediation with nanomaterials
- Pharmaceutical and Antibiotic Environmental Impacts
- Environmental Toxicology and Ecotoxicology
- TiO2 Photocatalysis and Solar Cells
- Air Quality and Health Impacts
- Recycling and Waste Management Techniques
- Chemistry and Chemical Engineering
- Groundwater flow and contamination studies
- Clay minerals and soil interactions
- Pigment Synthesis and Properties
- Advanced Theoretical and Applied Studies in Material Sciences and Geometry
- Heavy metals in environment
- Polymer Nanocomposite Synthesis and Irradiation
- Water Quality Monitoring and Analysis
- Graphene and Nanomaterials Applications
- Nanotechnology research and applications
- Indoor Air Quality and Microbial Exposure
- Soil and Unsaturated Flow
- Electrochemical Analysis and Applications
Institut de Recherche pour le Développement
2015-2024
Centre de Recherche et d’Enseignement de Géosciences de l’Environnement
2015-2024
Centre National de la Recherche Scientifique
2015-2024
Aix-Marseille Université
2014-2024
Sustainable Europe Research Institute
2008-2023
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2020-2022
Institut de Biosciences et Biotechnologies
2018
Collège de France
2017
European Union Agency for Law Enforcement Cooperation
2012-2014
Centre Paul Albert-Février
2014
In order to assess the release of UV filters from sunscreen used by beachgoers into seawater within bathing zone, a field campaign was carried out during summer 2017 at three beaches in Marseille, along French Mediterranean coast. A social survey analyzed beachgoer attendance, quantities and types suncare products frequencies, while water spatially temporally so as quantify both mineral organic directly released recovered. During peak recreational time beaches, were detected higher...
We examined the physical and chemical characteristics of colloidal dispersions fullerene materials (nC60) produced through several solvent exchange processes extended mixing in water only. The nC60 via different methods were unique from each other with respect to size, morphology, charge, hydrophobicity. greatest dissimilarities observed between by alone processes. role respective solvents determining various attributed differences solvent-C60 interactions presence as a residual structure,...
The possibility of simultaneous particle aggregation and deposition in a porous medium was examined for the case TiO2 nanoparticles (NPs). While potential is typically assumed to be negligible media due favored interactions with surfaces (collectors), we show that nanoscale dimensions may favor kinetics, thus altering transport retention these materials saturated media. When surface chemistry favors nanoparticle−nanoparticle attachment (αpp) over nanoparticle-collector (αpc), rate within...
A number of commercialized nanomaterials incorporate TiO2 nanoparticles. Studying their structural stability in media mimicking the environment or conditions use is crucial understanding potential eco-toxicological effects. We focused here on a hydrophobic nanoparticle-based formulation used cosmetics: T-Lite SF. It composed core, coated with two successive protective layers Al(OH)3, and polydimethylsiloxane. Soon after contact water (pH = 5, low ionic strength), SF becomes hydrophilic form...
The heteroaggregation of engineered nanoparticles (ENPs) with natural colloids (NCs), which are ubiquitous in surface waters, is a crucial process affecting the environmental transport and fate ENPs. Attachment efficiencies for heteroaggregation, αhetero, required as input parameters models to predict ENP concentrations contribute risk assessment. Here, we present novel method determining αhetero values by using combination laser diffraction measurements aggregation modeling based on...
The widespread use of engineered nanomaterials (ENMs) in a variety technologies and consumer products inevitably causes their release into aquatic environments final deposition the oceans. In addition, growing number ENM are being developed specifically for marine applications, such as antifouling coatings environmental remediation systems, thus increasing need to address any potential risks organisms ecosystems. To safeguard environment, major scientific gaps related assessing designing...
Buckminsterfullerene (C60) is a known photosensitizer that produces reactive oxygen species (ROS) in the presence of light; however, its properties aqueous environments are still not well understood or modeled. In this study, production both singlet and superoxide by UV photosensitization colloidal aggregates C60 water was measured two distinct methods: electron paramagnetic resonance (EPR) with spin trapping compound, spectrophotometric detection reduced form tetrazolium compound XTT. Both...
To better understand and predict the fate of engineered nanoparticles in water column, we assessed heteroaggregation TiO2 with a smectite clay as analogues for natural colloids. Heteroaggregation was evaluated function salinity (10–3 10–1 M NaCl), pH (5 8), selected nanoparticle concentration (0–4 mg/L). Time-resolved laser diffraction used, coupled to an aggregation model, identify key mechanisms variables that drive Our data show that, at relevant concentration, behavior is mainly driven...
The nature of fullerene-water interactions and the role that they play in fate C60 aqueous systems is poorly understood. This work provides spectroscopic evidence for surface hydroxylation initially hydrophobic molecule when immersed water. mechanism appears to be basis stabilizing hydrophilic nC60 aggregates suspension. It remarkable such a chemical transformation dispersion are achieved under mild conditions readily produced an aquatic environment. acquired affinity water likely subsequent...
Located in a semi-arid to arid region, Morocco is confronting increasing water scarcity challenges. In the circular economy paradigm, reuse of treated wastewater agriculture currently considered possible solution mitigate shortage and pollution problems. recent years, has made significative progress urban treatment under National Wastewater Program (PNA). However, rural sanitation undergone significant delays. Therefore, an alternative technology for areas investigated this review,...
The inorganic manufactured nanoparticles as TiO2, Ag°, the iron oxides and CeO2 are more present in various products aqueous media (TiO2). Their dispersion ecosystems during their life cycle will be associated with interactions biota (plants, bacteria, fishes). work shows strong relations between particular physical chemical properties of very small (size < 30 nm) biological activity perturbations. It is shown that Ag° act at low concentrations. TiO2 via ROS production due to...