News tagged with titanium dioxide

Porphyrin Dimers Increase Efficiency of Dye-Sensitized Solar Cells

Chemistry / Materials Science

Oct 30, 2009 | 4.5 / 5 (12) | 1

(PhysOrg.com) -- Porphyrins are most commonly thought of as the pigment in red blood cells, but now scientists have found that porphyrins can also be used to increase the efficiency of an inexpensive type ...

Easing Atmospheric CO2 Levels Using Nanotubes and Sunlight

Nanotechnology / Nanomaterials

Feb 16, 2009 | 4 / 5 (23) | 32

(PhysOrg.com) -- Researchers at The Pennsylvania State University have determined a way to use arrays of nanotubes in a solar-based process to convert carbon dioxide and water into methane and other hydrocarbon ...

Nanoparticles used in common household items caused genetic damage in mice

Nanotechnology / Bio & Medicine

Nov 16, 2009 | 4.8 / 5 (24) | 11

Titanium dioxide (TiO2) nanoparticles, found in everything from cosmetics to sunscreen to paint to vitamins, caused systemic genetic damage in mice, according to a comprehensive study conducted by researchers at UCLA's Jonsson ...

Argonne 'homegrown' hybrid solar cell aims for low-cost power

Nanotechnology / Nanomaterials

Nov 10, 2009 | 4.3 / 5 (12) | 3

(PhysOrg.com) -- Scientists at the U.S. Department of Energy’s (DOE) Argonne National Laboratory have refined a technique to manufacture solar cells by creating tubes of semiconducting material and then "growing" ...

Carbonized TiO2 nanotubes with semimetallic properties increase the efficiency of methanol fuel cells

Nanotechnology / Nanomaterials

Sep 08, 2009 | 4.5 / 5 (2) | 0

(PhysOrg.com) -- Mention of nanotubes usually means carbon nanotubes. But not all tiny tubes are made of carbon. For example, layers made of nanoscopic titanium dioxide have proven to be useful materials for biotechnology, ...

Nanotech particles affect brain development in mice

Nanotechnology / Bio & Medicine

Jul 28, 2009 | 4.6 / 5 (7) | 0

Maternal exposure to nanoparticles of titanium dioxide (TiO2) affects the expression of genes related to the central nervous system in developing mice. Researchers writing in BioMed Central's open access journal Particle an ...

Nano-sandwich Triggers Novel Electron Behavior

Nanotechnology / Nanophysics

May 04, 2009 | 3.9 / 5 (14) | 4

(PhysOrg.com) -- A material just six atoms thick in which electrons appear to be guided by conflicting laws of physics depending on their direction of travel has been discovered by a team of physicists at the University of ...

Discovery of an Unexpected Boost for Solar Water-Splitting Cells

Nanotechnology / Nanomaterials

Apr 22, 2009 | 5 / 5 (22) | 1

(PhysOrg.com) -- A research team from Northeastern University and the National Institute of Standards and Technology has discovered, serendipitously, that a residue of a process used to build arrays of titania ...

Dancing 'adatoms' help chemists understand how water molecules split

Physics / Condensed Matter

Mar 16, 2009 | 4.4 / 5 (8) | 0

Single oxygen atoms dancing on a metal oxide slab, glowing brighter here and dimmer there, have helped chemists better understand how water splits into oxygen and hydrogen. In the process, the scientists have visualized a ...

Titanium Dioxide Nanoparticles Catalyze Brain Tumor Death

Nanotechnology / Bio & Medicine

Sep 24, 2009 | 5 / 5 (5) | 6

(PhysOrg.com) -- Scientists from the U.S. Department of Energy’s (DOE) Argonne National Laboratory and the University of Chicago Medical Center’s Brain Tumor Center have developed a way to target brain cancer cells using ...

Truth Is Stranger Than Science: Discovering true properties of metal oxides

Chemistry / Materials Science

Sep 17, 2009 | 5 / 5 (4) | 2

(PhysOrg.com) -- To successfully compete in a global marketplace, manufacturers continually search for better materials: faster drying and less hazardous paint, longer-lasting sunscreen, and faster computers. ...

Toward a nanomedicine for brain cancer

Nanotechnology / Bio & Medicine

Sep 09, 2009 | 5 / 5 (1) | 0

In an advance toward better treatments for the most serious form of brain cancer, scientists in Illinois are reporting development of the first nanoparticles that seek out and destroy brain cancer cells without ...

Scientists develop targeted cancer treatment using nanomaterials

Nanotechnology / Bio & Medicine

Aug 19, 2009 | 5 / 5 (3) | 2

(PhysOrg.com) -- Scientists from the U.S. Department of Energy's Argonne National Laboratory and the University of Chicago's Brain Tumor Center have developed a way to target brain cancer cells using inorganic ...

Novel approach estimates nanoparticles in environment

Nanotechnology / Bio & Medicine

May 20, 2009 | 5 / 5 (2) | 1

Without knowing how much of an industrial chemical is being produced, it is almost impossible for scientists to determine if it poses any threat to the environment or human health.

Nanoparticles in cosmetics/personal care products may have adverse environmental effects

Nanotechnology / Bio & Medicine

Mar 26, 2009 | 5 / 5 (2) | 1

Using aquatic microbes as their "canary-in-a-cage," scientists from Ohio today reported that nanoparticles now being added to cosmetics, sunscreens, and hundreds of other personal care products may be harmful ...