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627 Current news about the topic nanoparticlesrss
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Way, shape and form: Synthesis conditions define the nanostructure of manganese dioxide
Scientists at Tokyo Institute of Technology explore a novel and simplistic method to synthesize manganese dioxide with a specific crystalline structure called β-MnO2. Their study sheds light on how different synthesis conditions can produce manganese dioxide with distinct porous structures, ...
New method for assembling nanomaterials as desired
“Core-shell” clusters pave the way for new efficient nanomaterials that make catalysts, magnetic and laser sensors or measuring devices for detecting electromagnetic radiation more efficient. Whether in innovative high-tech materials, more powerful computer chips, pharmaceuticals or in the field ...
Some catalysts show remarkable high activity - Thanks to water
Nanocatalysts made of gold nanoparticles dispersed on metal oxides are very promising for the industrial, selective oxidation of compounds, including alcohols, into valuable chemicals. They show high catalytic activity, particularly in aqueous solution. A team of researchers from Ruhr-Universität ...
International research team studies the effects of magnetic fields on magnetic nanoparticles
When ultrafine magnetic particles are exposed to an external magnetic field, their magnetic core grows in a previously unexpected way. This was observed by a team of scientists from the University of Cologne (UoC), Forschungszentrum Jülich and the Institut Laue-Langevin in Grenoble, France, by ...
Unusual nanoparticles could could be useful for environmental cleanups, sensors, electronic devices and solar cells
Imagine tiny crystals that "blink" like fireflies and can convert carbon dioxide, a key cause of climate change, into fuels. A Rutgers-led team has created ultra-small titanium dioxide crystals that exhibit unusual "blinking" behavior and may help to produce methane and other fuels, according to ...
They discovered that the messy environment of a chemical reaction can actually change the shape of a catalytic nanoparticle in a way that makes it more active
Replacing the expensive metals that break down exhaust gases in catalytic converters with cheaper, more effective materials is a top priority for scientists, for both economic and environmental reasons. Catalysts are required to perform chemical reactions that would otherwise not happen, such as ...
Risk analyses for nanoparticles
In order to reduce the number of animal experiments in research, alternative methods are being sought. This is a particular challenge if the safety of substances that have hardly been studied is to be ensured, for instance, the completely new class of nanomaterials. To accomplish just that, Empa ...
Making catalysts has been expensive and complicated – until now
Chemical engineers from UNSW Sydney have developed new technology that helps convert harmful carbon dioxide emissions into chemical building blocks to make useful industrial products like fuel and plastics. And if adopted on a large scale, the process could give the world breathing space as it ...
International research project observes ultrafast particle growth through ammonia and nitric acid
When winter smog takes over Asian mega-cities, more particulate matter is measured in the streets than expected. An international team, including researchers from Goethe University Frankfurt, as well as the universities in Vienna and Innsbruck, has now discovered that nitric acid and ammonia in ...
Composite membrane consists of Nafion with embedded nanoparticles
A group from Brazil and an HZB team have investigated a novel composite membrane for ethanol fuel cells. It consists of the polymer Nafion, in which nanoparticles of a titanium compound are embedded by the rarely explored melt extrusion process. At BESSY II they were able to observe in detail, ...