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Solar-Driven MOF Membrane Fabrication from Waste for Sustainable Separations

Objective

Membrane-based separations are among the most energy-efficient alternatives to conventional processes such as distillation, yet the fabrication of high-performance membranes remains energy- and resource-intensive. Metal–organic framework (MOF) membranes offer exceptional selectivity and tunability for demanding separations, including propylene/propane (C₃H₆/C₃H₈) and lithium/magnesium (Li⁺/Mg²⁺), but current hydro/solvothermal fabrication methods require high temperatures, pressures, grid electricity, and purified chemical precursors. This project, SUN-MEM, introduces a solar-driven photoelectrochemical (PEC) platform for MOF membrane fabrication under ambient conditions, eliminating external electrical input and enabling off-grid operation. The method directly integrates waste valorisation by using zinc ions recovered from spent Zn–Mn batteries and terephthalic acid (TPA) from PET plastic waste as precursors. Solar illumination simultaneously drives anodic and cathodic interfacial reactions, lowering nucleation barriers, enabling rapid growth within one hour, and producing valuable H2 and O2 by-products. The approach is compatible with both imidazolate (ZIF-8) and carboxylate (UiO-66) chemistries, demonstrated on flat plate and hollow fiber substrates for industrial scalability. Compared with conventional synthesis, SUN-MEM can reduce electricity consumption by over 95%, precursor costs by 65%, and manufacturing CO2 emissions by 84%, while contributing to the upcycling of over 4.9 Mt PET and 34 kt battery waste generated annually in the EU. By bridging solar energy conversion, MOF membrane engineering, and circular economy principles, the project delivers a disruptive route to sustainable, energy-autonomous membrane manufacturing, aligned with the EU Green Deal and Zero Pollution Ambition, and enabling equitable access to advanced separations in resource-limited regions.

Keywords

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Programme(s)

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Topic(s)

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Funding Scheme

Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.

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

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Call for proposal

Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.

(opens in new window) HORIZON-MSCA-2025-PF

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Coordinator

IMPERIAL COLLEGE OF SCIENCE TECHNOLOGY AND MEDICINE
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 276 187,92
Address
SOUTH KENSINGTON CAMPUS EXHIBITION ROAD
SW7 2AZ London
United Kingdom

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Region
London Inner London — West Westminster
Activity type
Higher or Secondary Education Establishments
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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

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