Multifunctional Hybrid Materials for the Capture and Detection of Volatile Organic Compounds: Application to Preventive Conservation of the Cultural Heritage Objects - (2015-2018)
- Student: Kevin Dedecker
- Ecole Doctorale: ED 2MIB Molécules, matériaux, instrumentation et biosystèmes, UVSQ
Subject and description
PhD directors : Christian Serre, UMR8180 and Bertrand Lavédrine, USR3224
During their storage or their exposure, the materials of heritage are subject to physico-chemical alteration process linked to their environment in particular the primary pollutants (sulfur dioxide; nitrogen oxide), secondary (ozone) or versatil organic compounds (VOCs) and the aerosols from different sources (natural or anthropic). It was shown these gases behave like corrosion, hydrolysing agent and oxidant. This project is about the design of new multifunctional hybrid materials combining porous hybrid cristallized solids MOFs (Metal Organic Frameworks) type and metal nanoparticles in the order to adsorb and/or to detect selectively VOCs in environmental conditions (50% of moisture, room temperature). The objective of this QUAM project is to prevent the alteration of different materials of heritage (synthetic and natural polymers, metals, etc.) when they are stored in a polluted environment. The remarkable adsorption properties (sensitivity, selectivity, capacity,...) and the great versatility of MOFs (acidity, hydrophilic/hydrophobic balance, size/form of pores...) are used to preconcentrate or select the pollutants while metal nanoparticles (Au, Pd@Au) will allow detecting their presence, by allowing to design new optical detectors directly usable in a showcase of a museum or in a reserve.