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Mechanochemical preparation of metal-free, covalent triazine-based networks for photocatalytic hydrogen peroxide synthesis
Solar energy is already widely harnessed through the use of photovoltaic systems and solar thermal energy for electricity and heat production. Chemical reactions can also be enabled by sunlight as an energy source. Sunlight thus becomes directly accessible for chemical transformations as an inexhaustible, sustainable energy supplier. A frequently discussed class of substances for photocatalytic applications are covalent triazine-based networks (CTFs). These are composed of organic structural building blocks that are covalently linked to form extended crystalline network structures with many attractive properties.
For this purpose, CTFs are mainly prepared via a variety of different wet chemical polymerization routes. However, these are associated with high organic solvent requirements and long reaction times. By using ball mills for polymerization, these problems can be addressed and, accordingly, the sustainability of CTF production can be improved. Although several such approaches have been developed for other covalent organic networks and metal-organic frameworks, such reactions are still poorly understood for CTFs.
- Photocatalytic transformation of water to hydrogen peroxide
- Characterization of organic networks and derivation of structure-activity relationships
- Development of a new mechanochemical synthesis