Plastic pollution is one of the most pressing environmental and social issues of the 21st century. Plastic affects not only the environment but also society at all stages of the production cycle, from extracting raw materials and manufacturing, through to consumption and disposal. Regarding plastic disposal, it is estimated that 79% of plastic waste produced since 1950 has been accumulated in landfills or the environment. Once released to the environment, plastic waste is distributed and transferred among the four major environmental compartments (air, water, soil, and biota). MP are a special kind of plastic waste with sizes between 0.3 mm and 5 mm. MP are considered emerging pollutants because they led to huge negative environmental consequences as they interact marine and terrestrial flora and fauna. Currently, it is well known that MP are being transferred through the trophic web, and their presence has been recently confirmed in humans. Therefore, action is urgently needed to address MP waste pollution. Call for action is so imperative because the challenge of plastic waste was defined by the UNEP as a major part of the global pollution crisis. Global pollution crisis, alongside biodiversity loss and climate change, represent the triple planetary emergency derived from the relentless and unlimited extraction of resources from the Earth. According to UNEP, the triple planetary emergency must be addressed by massive shifts in the way humanity utilizes the earth’s resources, using science as the catalyst for action through the delivering of scientific and technological knowledge that can strengthen the consensus on policymaking options, identify solutions, and guide actions for environmental sustainability.

TiO₂-based ceramics can be used to degrade MP using photocatalysis, helping to solve MP pollution. Photocatalysis is based on the interaction of TiO₂ with photons with E ≥ Eg, and the generation of hydroxyl (OH^•) and hydroperoxyl/superoxide anion radicals (HO₂^•/O₂^-•). Those species mineralise MP into CO₂ and H₂O or degrade them into less toxic substances. Here, N-TiO₂, C,N-TiO₂ and C,N-TiO₂/SiO₂ ceramics obtained from 3 different renewable raw materials were prepared, characterized and tested for removing MP. Two green syntheses were used: a bio-inspired route where proteins from Mytilus edulis and Mytilus galloprovincialis mussels were used as renewable raw materials and a biomineralization route using Pteria sterna oysters. The structural, chemical, optical, and textural properties of the powders were investigated by XRD, XPS, DRS, FTIR, nitrogen adsorption, and FEG- SEM. Photocatalysis of MPs was monitored by gravimetry, FTIR, carbonyl index, MO and SEM-EDS. It was found that the mussel’s derived nanoparticles have a better ability to degrade MPs than the biomineralized powders. The C,N-TiO₂ derived from M. edulis mussels can degrade up to 70% PE MPs and the C,N-TiO₂/SiO₂ derived from both mussels can degrade PET MPs. It was concluded that the photocatalytic degradation of MPs in an aqueous medium using TiO₂-based advanced ceramics is possible and can be used to fight MP pollution