Tag Archive for 'Catalysis'

An artist’s impression of the Hadean Earth: huge, impact-generated lava lakes coexisted with surface liquid water, under a thick greenhouse atmosphere sustained by lava outgassing. Image credit: Simone Marchi & Dan Durda, Southwest Research Institute.

Iron-Rich Meteoritic and Volcanic Particles May Have Promoted Origin of Life Reactions on Early Earth

May 26, 2023 by Enrico de Lazaro

Precursors of the molecules needed for the origin of life may have been generated by chemical reactions promoted by meteoritic and volcanic particles approximately...

Cai et al demonstrate the catalytic activity of Ag and Au clusters physically deposited onto titanium dioxide (TiO2) powders with the MACS in the catalytic ozonation of nitrophenol; compared to traditional catalysts reported in the literature, the catalysts produced by the MACS exhibit at least comparable activities and show excellent reusability without evident degradation after five cycles: (a) photograph and (b) schematic diagram of the MACS system; (c) photograph of the Ag cluster on TiO2 powder catalyst produced (1 g), showing the color change from white to brown. Image credit: Cai et al, doi: 10.1021/acsami.0c05955.

Scientists Develop Environmentally Friendly Method for Removing Chemicals from Water

Jul 2, 2020 by News Staff

The newly-invented method, named the matrix assembly cluster source (MACS), involves no solvent and is a step change in the approach to water treatment...

For DNA to be read, replicated or repaired, DNA molecules must open themselves. This happens when the cells use a catalytic protein to create a hydrophobic environment around the molecule. Image credit: Yen Strandqvist / Chalmers University of Technology.

Scientists Disprove Popular Theory of How DNA Binds Itself

Sep 23, 2019 by News Staff

DNA is constructed of two strands, consisting of sugar molecules and phosphate groups. Between these two strands are nitrogen bases, the compounds which...