Chemistry in the News
Bringing clean energy a step closer
Fri, 27 Feb 2015 14:49:01 EST
Researchers have made an inexpensive metal-free catalyst that performs as well as costly metal catalysts at speeding the oxygen reduction reaction in an acidic fuel cell, and is more durable. The catalyst is made of sheets of nitrogen-doped graphene that provides great surface area, carbon nanotubes that enhance conductivity, and carbon black particles that separate the layers allowing the electrolyte and oxygen to flow freely, which greatly increased performance and efficiency.
The biobattery: Turning sewage sludge into electricity and engine oil
Fri, 27 Feb 2015 11:25:39 EST
Sewage sludge, green waste, production residue from the food industry, straw or animal excrement – with the biobattery‘s modular concept a much larger range of biomass can be utilized for energy recovery than previously. Researchers show that they can convert organic residues into electricity, heat, purified gas, engine oil and high quality biochar using this process.
Building blocks of the future defy logic: New logic-defying mathematical model
Thu, 26 Feb 2015 12:24:45 EST
Wake up in the morning and stretch; your midsection narrows. Pull on a rubber band and it becomes thinner. One might assume that materials will always stretch and thin. Wrong. Thanks to their peculiar internal geometry, auxetic materials grow wider when stretched. After confounding scientists for decades, researchers are now developing mathematical models to explain the unusual behavior of these logic-defying materials, unlocking applications from better skin grafts to new smart materials.
Combating bacteria via silver-dammar coating
Thu, 26 Feb 2015 12:21:12 EST
Natural resins obtained from plants to be used as a coating element to enhance durability and anti-rust properties. Coating systems are formulated using a mixture of dammar, silver and nanoclay in varied compositions.
Superatomic Nickel core and unusual molecular reactivity
Thu, 26 Feb 2015 12:21:09 EST
Scientists have revealed a unique molecular fragment Ni2O2, consisting of two nickel atoms and two oxygen atoms, that have shown plausible superatomic properties. Supeatoms are important structural elements in nanoscale organization and they possess unique physical and chemical properties.