In a study published in Scientific Reports, researchers from the University of Basel, the Swiss Nanoscience Institute, and the Paul Scherrer Institute shed light on a fascinating phenomenon: surfaces coated with rare earth oxides gain water-repelling characteristics upon exposure to air. These surfaces show this trait even at room temperature, owing to chemical reactions initiated by ambient hydrocarbons.

Applications of Rare Earths

Rare earths serve various critical purposes in contemporary technology. They are integral components in automotive catalytic converters, batteries, screen and lamp manufacturing, and are employed as contrast agents in magnetic resonance imaging. The extensive spectrum of their applications highlights the increasing demand for rare earths.

 

Additional avenues for rare earth utilization emerged following a 2013 revelation by American researchers. They disclosed that surfaces coated with rare earth oxides exhibit water-repellent characteristics. Building upon this, the scientists from the University of Basel, Swiss Nanoscience Institute, and the Paul Scherrer Institute collaborated with Glas Trösch to conduct a comprehensive examination of these hydrophobic properties.

Examination of Hydrophobic Properties

Glass pieces were treated with coatings of rare earth oxides, nitrides, and fluorides, and their water wetting capabilities were scrutinized by researchers. Initially, upon deposition, no hydrophobic properties were discernible in the coating. However, subsequent chemical reactions with airborne gaseous hydrocarbons altered the surface's texture, diminishing water wetting.

 

Organic compounds from the ambient air are initially adsorbed onto the surface, subsequently undergoing reactions with the oxides to generate carbonates and hydroxides until the surface is entirely enveloped by these compounds. Remarkably, this transformative process even occurs at room temperature.

 

These findings offer insights from a scientific perspective, particularly as catalytic processes often occur at room temperature, underscoring the significance of comprehending surface physical properties. Despite this significance, the investigated materials prove unsuitable for industrial production of water-repellent glass surfaces. This limitation arises from the necessity of a meticulous storage process for the glass to manifest the desired hydrophobic traits.

Apex Magnets

If you enjoy our regular updates on magnetic news and discoveries, read more on our blog! For any businesses who want to put our products to the test, browse our online catalog. Apex Magnets also offers customized magnets to fit your unique needs. Remember, we ship domestically and internationally! Simply fill out a custom order form to get started.