Researchers at the University of Nottingham have achieved a groundbreaking milestone in the field of CO2 conversion by creating a remarkable catalyst that not only transforms carbon dioxide into beneficial substances but also demonstrates increased efficiency as time progresses
This groundbreaking catalyst goes against the common trend of catalysts which tend to deteriorate after prolonged use.
Innovative Method for Addressing CO2 Levels
Composed of tin microparticles embedded in a nanoscale carbon framework, this state-of-the-art catalyst excels in generating formate, an essential chemical for a multitude of industries. Dr. Madasamy Thangamuthu, involved in co-leading this study at the University of Nottingham, explains that an effective electrocatalyst must form a strong bond with CO2 molecules and effectively transfer electrons to cleave its chemical bonds. This advancement is further highlighted by its self-improving nature; the tin microparticles fragment into tin nanoparticles, thus enhancing the catalyst’s overall performance.
A research assistant from the university, Tom Burwell, observed a notable increase in electrical current through the tin-modified nanotextured carbon over a duration of 48 hours. This resulted in a tripling of the catalyst’s efficiency and sustained selectivity for the intended chemical output. Burwell’s findings also indicated an improved interface between the smaller tin particles and the carbon electrode, augmenting the number of active sites where the reaction can occur.
Electrocatalysis is an essential process for the reduction of CO2 emissions worldwide as it can be fed by renewable energy sources. This method stands in stark contrast to conventional thermal processes that typically rely on hydrogen derived from fossil fuels. Instead, electrocatalysis utilizes electricity to turn CO2 and water into formate alongside other valuable chemicals.
Featured in ACS Applied Energy Materials, the research underscores the significance of developing environmentally-benign catalysts using abundant materials from the Earth. The implications of this study pave the way for creating electrocatalysts that are not only stable and selective but could also significantly change how CO2 is turned into useful substances.
The research has received support from the EPSRC Program Grant ‘Metal atoms on surfaces and interfaces (MASI) for a sustainable future’, which aims at synthesizing catalysts for three critical substances—CO2, hydrogen, and ammonia—which are essential for both economic and environmental reasons.
The University of Nottingham’s unwavering dedication to sustainable technological advancements is also exemplified by their recent initiative of the Zero Carbon Cluster located in the East Midlands, which strives to expedite innovation in eco-friendly sectors as well as advanced manufacturing technologies..
