Publications by authors named "M Vona"
Anion Exchange Membranes (AEMs) are promising materials for electrochemical devices, such as fuel cells and electrolyzers. However, the main drawback of AEMs is their low durability in alkaline operating conditions. A possible solution is the use of composite ionomers containing inorganic fillers stable in a basic environment.
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- Hydrothermal carbonization (HTC) is an eco-friendly process that converts pine needle waste into nitrogen-doped hydrochars, aimed at improving environmental reactions.
- These hydrochars were meticulously characterized and tested as catalytic electrodes for important reactions like oxygen reduction and carbon dioxide reduction, using advanced analytical techniques.
- The study demonstrated that hydrochars synthesized at specific conditions showed exceptional electrocatalytic performance, achieving a high onset potential in the oxygen reduction reaction and producing valuable carbon products in the carbon dioxide reduction reaction.
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- Recent studies suggest that elite athletes generally have better executive functions (EF), but findings are inconsistent when factoring in sport type and sex.* -
- This study assessed 230 elite athletes from three sports categories using a computerized test for various cognitive functions, revealing they scored above average in sustained attention and working memory but only slightly above the normative mean overall.* -
- While there was a significant difference in performance based on sport category for one EF variable, and males were faster than females in certain attention tasks, overall cognitive differences based on sport type or sex were minimal.*
The combination of ion exchange membranes with carbon quantum dots (CQDs) is a promising field that could lead to significant advances in water treatment. Composite membranes formed by sulfonated poly(ether ether ketone) (SPEEK) with embedded CQDs were used for the detection and removal of heavy metal ions, such as lead and cadmium, from water. SPEEK is responsible for the capture of heavy metals based on the cation exchange mechanism, while CQDs detect their contamination by exhibiting changes in fluorescence.
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