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Research News: Illinois engineers protect artifacts by graphene gilding

Research News: Carbon nanodots do an ultrafine job with in vitro lung tissue

Research News: Chemists develop nanocatalysts for continuous biofuel synthesis

Gilding is the process of coating intricate artifacts with precious metals. Ancient Egyptians and Chinese coated their sculptures with thin metal films using gilding—and these golden sculptures have resisted corrosion, wear, and environmental degradation for thousands of years. The middle and outer coffins of Tutankhamun, for instance, are gold leaf gilded, as are many other ancient treasures.

In a new study, Sameh Tawfick, an assistant professor of Mechanical Science and Engineering at the University of Illinois at Urbana-Champaign, inspired by this ancient , has added a single layer of carbon atoms, known as , on top of  leaves—doubling the protective quality of gilding against wear and tear.



Read more at: https://phys.org/news/2018-09-illinois-artifacts-graphene-gilding.html#jCp
Posted: 2018-09-12
 

Epidemiological studies have established a strong correlation between inhaling ultrafine particles from incomplete combustion and respiratory and cardiovascular diseases. Still, relatively little is known about the mechanisms behind how air particulates affect human health. New work with carbon nanodots seeks to provide the first model of how ultrafine carbon-based particles interact with the lung tissues.

An international group of researchers created a 3-D lung cell model system to investigate how carbon-based combustion byproducts behave as they interact with human epithelial . In Biointerphases, an AVS journal, the investigators discovered that the surface properties of the carbon nanodot's properties and aggregation patterns affected their distribution in a lab-grown copy of the lung's barrier layer, the epithelium. The carbon nanodots served as representatives for air pollution particles.



Read more at: https://phys.org/news/2018-09-carbon-nanodots-ultrafine-job-vitro.html#jCp
Posted: 2018-09-12
 

A chemist from RUDN synthesized new catalysts with ruthenium (Ru) nanoparticles for producing biofuel from organic biowaste. Nanocatalysts support more intensive and sustained reactions than the compounds currently available in the market. The results of the study were published in the ChemSusChem journal.

Rafael Luque, an external specialist from RUDN, works on the synthesis of gamma-valerolactone (GVL) together with his Chinese and Spanish colleagues. This colorless liquid can be obtained from food waste or harvesting leftovers. GVL may be used as a safe solvent or an additive to gasoline or may be distilled into hydrocarbons, "green fuel" for internal combustion engines.



Read more at: https://phys.org/news/2018-09-chemists-nanocatalysts-biofuel-synthesis.html#jCp
Posted: 2018-09-12
 
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