Print Email Facebook Twitter Precursor- and waste-free synthesis of spark-ablated nanoparticles with enhanced photocatalytic activity and stability towards airborne organic pollutant degradation Title Precursor- and waste-free synthesis of spark-ablated nanoparticles with enhanced photocatalytic activity and stability towards airborne organic pollutant degradation Author Drdova, Sarka (ETH Zürich; Swiss Federal Laboratories for Materials Science and Technology (Empa)) Gao, Min (ETH Zürich; Swiss Federal Laboratories for Materials Science and Technology (Empa)) Sambalova, Olga (Swiss Federal Laboratories for Materials Science and Technology (Empa)) Pauer, Robin (Swiss Federal Laboratories for Materials Science and Technology (Empa)) Zhou, Zhouping (Student TU Delft) Dimitriadou, Sofia (VSPARTICLE) Schmidt-Ott, A. (TU Delft ChemE/Materials for Energy Conversion and Storage; VSPARTICLE) Wang, J. (ETH Zürich; Swiss Federal Laboratories for Materials Science and Technology (Empa)) Date 2024 Abstract Photocatalyst synthesis typically involves multiple steps, expensive precursors, and solvents. In contrast, spark ablation offers a simple process of electrical discharges in a gap between two electrodes made from a desirable material. This enables a precursor- and waste-free generation of pure metal oxide nanoparticles or mixtures of various compositions. This study presents a two-step method for the production of photocatalytic filters with deposited airborne MnOx, TiO2, and ZnO nanoparticles using spark ablation and calcination processes. The resulting MnOx and TiO2 filters demonstrated almost twice the activity with outstanding performance stability, as compared to sol-gel MnO2 and commercial TiO2. The introduced method is not only simple, precursor- and waste-free, and leads to superior performance for the case studied, but it also has future potential due to its versatility. It can easily produce mixed and doped materials with further improved properties, making it an interesting avenue for future research. To reference this document use: http://resolver.tudelft.nl/uuid:7ab42167-5443-44e5-9d78-df162057e571 DOI https://doi.org/10.1039/d3en00348e ISSN 2051-8153 Source Environmental Science: Nano Part of collection Institutional Repository Document type journal article Rights © 2024 Sarka Drdova, Min Gao, Olga Sambalova, Robin Pauer, Zhouping Zhou, Sofia Dimitriadou, A. Schmidt-Ott, J. Wang Files PDF d3en00348e.pdf 7.8 MB Close viewer /islandora/object/uuid:7ab42167-5443-44e5-9d78-df162057e571/datastream/OBJ/view