Tag Archive for Titanium dioxide

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...

TiO2 triggers biofilm formation by commensal bacteria: (A, B) the clustering effect of TiO2 on (A) E. coli and (B) E. faecalis in vitro was visualized by Nanolive imaging in the presence of 0, 0.5, 1, or 50 μg/ml TiO2 after 24 h incubation. False-coloring was applied to images based on refractive index, where black represents the refractive index of TiO2 and green represents bacteria. Image credit: Pinget et al, doi: 10.3389/fnut.2019.00057.

Food Additive E171 May Impact Human Health

May 15, 2019 by News Staff

E171, a mixture of micro- and nano-sized particles of titanium dioxide (TiO2), is commonly used in high quantities in foods and some medicines as a whitening...

Inhaled and ingested titanium dioxide particles enter the bloodstream, are inflammatory and are phagocytized by macrophages and neutrophils. Image credit: Heller et al, doi: 10.1021/acs.chemrestox.8b00047.

Study Shows Link between Titanium Dioxide Pigment and Type 2 Diabetes

Jun 27, 2018 by News Staff

A new pilot study, published in the journal Chemical Research in Toxicology, raises the possibility that humanity’s increasing use of titanium dioxide...

This illustration shows Kepler-13Ab that circles very close to its host star, Kepler-13A. In the background is the star’s binary companion, Kepler-13B, and the third member of the multiple-star system is the orange dwarf star Kepler-13C. Image credit: NASA / ESA / G. Bacon, STScI.

Hubble Discovers Titanium Dioxide Snow Falling on Hot Jupiter Kepler-13Ab

Oct 28, 2017 by News Staff

The NASA/ESA Hubble Space Telescope has found a blistering hot-Jupiter exoplanet where it ‘snows’ titanium dioxide, the active ingredient in sunscreen....

Researchers Manipulate Liquids Using Only Visible Light

Apr 25, 2017 by News Staff

A novel system developed by researchers at the Massachusetts Institute of Technology (MIT) could make it possible to control the way a liquid moves over...

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