HEИндивидуална стипендия2023–2025

RT-MAP · Reactivity and Transport of Hollow Magnetic Particles Explored with Microfluidics

„Хоризонт Европа“ — Действия „Мария Склодовска-Кюри“

Период: 2023-05-01 → 2025-04-30
Финансиране от ЕС: 211 755 €
Участници: 1
Схема: HORIZON-TMA-MSCA-PF-EF

Линиите свързват координатора с партньорите.

Накратко на български

Кухи магнитни частици от железен оксид се разработват за пренасяне на химикали, които да почистят околната среда. Тези частици помагат за по-доброто контролиране на химичните реакции и разпределянето на веществата в порести среди.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Reactivity and Transport of Hollow Magnetic Particles Explored with Microfluidics

RT-MAP will develop novel nano and micro sized hollow iron oxide particles that may be used to deliver reagents for environmental remediation and/or heterogeneous catalysis. Hollow magnetic particles (h-MPs) have aroused great interest recently due to their complex interior structures, good inherent magnetism, low density and the large fraction void space that is successfully used to encapsulate and control reagent release. RT-MAP will provide the community with a generic line of desired, tailored particles, not available today, and that are environmentally and economically friendly for such applications. To design these particles for controlled remediation reactivity, we will combine solid and surface chemistry and reactive transport experiments. This will be possible by combining complementary skills and leading expertise: magnetic particles preparation and characterization (The post-doctoral fellow), iron geochemistry and molecular chemistry (Supervisor), and porous media and microfluidics (supervisor and co-supervisors). To achieve this ambitious objective, the two interrelated specific objectives are: To develop scalable process for production of stable h-MPs with controlled morphology, size and architecture for diverse applications (WP1). To determine the impact of coupled chemical and physical processes on the reactive properties of h-MPs in porous media using microfluidics (WP2). Hollow particles, with controlled porosity, can be used as a chemical reactor where a given molecule can enter or release via narrow holes within the particle shell, hence reacting with the suspended molecules in the porous media. By optimizing the flow rate, it is possible to control the residence time or release time as well as the amount of chemical reaction along the path of the particles. Due to magnetic properties, these particles can also be transported (without imposing any flow) only with the use of the magnetic field whose strength can be varied. Although, magnetic particles tend to aggregate in porous structures, it can lead to a more efficient transfer of the chemicals. Therefore, these particles have technological advantage as compared to other delivery systems and have diverse applications in environmental restoration, agriculture sector, biomedicine and/or green catalysis.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

RT-MAP will develop novel hollow iron oxide particles and assess their reactivity, stability and mobility under flow through porous media. Such hollow magnetic particles (h-MPs) have aroused great interest for their potential to encapsulate and control reagent release for environmental remediation and/or heterogeneous catalysis. Most available reactivity assessment studies rely on the interpretation of breakthrough curves measurement at the outlet batch tests or column experiments and do not allow a direct visualization of pore scale transport and reaction phenomena. RT-MAP will develop novel microfluidic cells, providing a new window on coupled flow and reaction processes at the microscale, a key to modeling and predicting macroscale reaction rates. The combination of complementary expertise of the fellow (material synthesis and characterization), and the supervisor and co-supervisors (molecular geochemistry, reactive transport in porous media, microfluidics) will offer a unique opportunity to address these emerging scientific questions. We will thus fabricate microfluidic cells providing spatially resolved concentration fields under flow through reactive porous media. Cutting-edge spectroscopic techniques will be used to investigate molecular interactions between reactive particles and two types of fluorescent compounds. The first is a fluorescent probe (fluorescein) used to functionalize particles and make them traceable by imaging in microfluidics. The second is an environmentally relevant antibiotic (ofloxacine) to study the reactive properties of h-MPs with emerging contaminants. Advanced microfluidic devices and fluorescence imaging will provide the first spatial resolved images of h-MP concentration at microscale under different flow rates and solution chemistry. RT-MAP will thus lead to key innovations at the interface of environmental chemistry, geosciences and microfluidics, placing the fellow on a strong footing to find an independent research position.

Оригинален текст от CORDIS (на английски).

Участници

ECOLE NATIONALE SUPERIEURE DE CHIMIE · RennesКоординаторФранция