"It will inspire the rational design of high-performance photocatalysts for solar energy utilization and benefit the development of solar-driven waste upcycling technology. "Our fundamental research provides a green and sustainable solution to simultaneously reduce plastic pollution and produce valuable chemicals from waste for a circular economy," said Professor Qiao. It will be of use in further scientific research, waste management and chemical manufacturing. The team's work aims to address contemporary environmental and energy challenges, contributing to a circular economy. "Catalytic recycling of PE waste is still in early development and is practically challenging because of chemical inertness of polymers and side reactions arising from structural complexities of reactant molecules."Ĭurrent chemical recycling for PE waste is operated at high temperatures greater than 400° centigrade that yield complex product compositions.Įthylene is an important chemical feedstock that can be further processed into a variety of industrial and daily products, while propionic acid is also in high demand owing to its antiseptic and antibacterial properties. "Plastic waste is an untapped resource that can be recycled and processed into new plastics and other commercial products," said Professor Qiao. It is also the largest proportion of all plastic waste and primarily ends up in landfills, posing a threat to global environment and ecology. Daily food packaging, shopping bags and reagent bottles are all made from PE. We meet nutritional supplement guidelines of even the strictest surgical centers, and have worked with. Our proteins are of the highest-quality and designed specifically for those who have undergone bariatric surgery. PE is the most widely used plastic in the world. Theyve been formulated with top food companies in the USA and Canada. Most of the plastics used today end up being discarded and accumulated in landfills. A typical photocatalyst is titanium dioxide with isolated palladium atoms on its surface." "This waste-to-value strategy is primarily implemented with four components, including plastic waste, water, sunlight and non-toxic photocatalysts that harness solar energy and boost the reaction. Renewable solar energy was used rather than industrial processes that consume fossil fuel and emit greenhouse gases." Nearly 99% of the liquid product is propionic acid, alleviating the problems associated with complex products that then require separation. "An oxidation-coupled room-temperature photocatalysis method was used to convert the waste into valuable products with high selectivity. "We have upcycled polyethylene plastic waste into ethylene and propionic acid with high selectivity using atomically dispersed metal catalysts," said Professor Qiao. The University of Adelaide's Professor Shizhang Qiao, Chair of Nanotechnology, and Director, Center for Materials in Energy and Catalysis, at the School of Chemical Engineering, led the team that published their findings in the journal Science Advances. Get inspired by lead generating content on Linkedin, curated by Maetel.
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