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Sunlight-mediated photocatalytic upcycling of microplastics

Project description

Harnessing sunlight to tackle plastic waste

Plastic pollution, and particularly microplastics, poses a growing threat to ecosystems owing to their long-term bioaccumulation. With the support of the Marie Skłodowska-Curie Actions programme, the SOLMUP project will explore an innovative photocatalytic approach to upcycle microplastics into valuable chemicals. The proposed approach, which aligns with circular economy principles, will leverage sunlight and advanced iron-based heterostructure photocatalysts to enhance light absorption, durability and reaction efficiency. This approach will help overcome common issues such as charge carrier recombination, thereby ensuring higher selectivity and conversion rates. Detailed studies in reaction intermediates will unveil the photocatalytic reaction mechanisms.

Objective

During the last two decades, scientists have been pointing out an important issue related to the excessive use of plastic in our daily life, i.e. the presence of plastic fragments in the range of micrometer in our natural habitats. These species are known as microplastics (MPs) and their effect on the long bioaccumulation foresees unpromising results on the natural balance. Consequently, different scientific fields are looking into viable approaches to remove or destroy MPs. The upcycling of MPs is an example of these and includes the cleavage of the organic bonds forming the polymers in the MPs to obtain new chemicals.
Photocatalysis is a frequent methodology applied in the degradation and removal of water contaminant, such as organic molecules, and, consequently, it is likely to lead to a successful MPs upcycling. This strategy involves the high desirable usage of sunlight, which represent the utmost renewable energy, and inorganic photocatalysts.
This project proposes the use of a photocatalytic approach for the upcycling of MPs by photoreforming (SOLMUP). It will allow to sustainably obtain high value-added chemicals starting from undesired plastic waste, in line with the principle of circular economy. To avoid the most common drawback of photocatalysts, i.e. charge carriers recombination, Fe-based photocatalysts will be combined to form heterostructures. For the first time in the literature, the heterojunctional photocatalysts will be applied in MPs PR, ensuring a better light response and durability of the catalytic system to increase selectivity and conversion, compared to the few previous reports. Moreover, the study of the reaction intermediates and the transitional states of the catalyst will unveil the mechanism of the photocatalytic reaction.
SOLMUP is combining two striking topics in the protection of our environment by sustainable approaches, i.e. the upcycling of waste and the application of new and durable energy sources such as sunlight.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

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Call for proposal

(opens in new window) HORIZON-MSCA-2022-PF-01

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Coordinator

OULUN YLIOPISTO
Net EU contribution
€ 223 641,27
Address
PENTTI KAITERAN KATU 1
90014 Oulu
Finland
Region
Manner-Suomi Pohjois- ja Itä-Suomi Pohjois-Pohjanmaa
Activity type
Higher or Secondary Education Establishments
Links
Total cost
No data