Sustainable Plasmonic Membranes for Water Remediation

Ziel

Plasmon chemistry is an emerging field in which light energy is converted into chemical energy or heat in metal nanoparticles (NPs). Previously, we have investigated the degradation of small organic molecules such as brominated nucleobases and halogenated thiophenols through excitation of NPs by visible or even near-infrared light. These results inspired us to apply plasmonic nanomaterials to decompose organic micropollutants such as pharmaceuticals in waste water.
Many pharmaceuticals are categorized as water pollutants of emerging concern due to their harmful effect even in trace quantities, as they may cause damage in different living organisms present in and around aquatic systems. Many studies have noticed that such micropollutants show a ubiquitous environmental presence owing to their high water solubility and due to inefficient wastewater treatment. To avoid severe environmental, human health and biodiversity problems, novel solutions for water remediation need to be developed.
Within the SusPlasMem project a sustainable plasmonic membrane based on nanocellulose and plasmonic nanoparticles will be used for an efficient degradation of micropollutants by visible light. The degradation by visible light is very cost-effective and allows for the use of sunlight. The material is easy to be scaled up and the scope of molecules to be decomposed will be studied by considering representatives of antibiotics, other small-molecule pharmaceutics and polyfluorinated alkyl substances. The SusPlasMem project will focus on validating the effectiveness of the generated membranes with respect to micropollutant removal from wastewater samples. Strategies will be developed to enable water remediation in flow and a demonstrator model will be constructed. Finally, we will work in close collaboration with industry partners to establish the implementation of the technology within an industrially relevant environment.