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Template-Free Synthesis of Mesoporous β-MnO2 Nanoparticles

Way, shape and form: Synthesis conditions define the nanostructure of manganese dioxide

06-Aug-2020

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, ...

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Researchers synthesize nanoparticles tailored for special applications

New method for assembling nanomaterials as desired

31-Jul-2020

“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 ...

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Water molecules are gold for nanocatalysis

Some catalysts show remarkable high activity - Thanks to water

28-Jul-2020

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 ...

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Magnetic nanoparticles change their magnetic structure in a magnetic field

International research team studies the effects of magnetic fields on magnetic nanoparticles

28-Jul-2020

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 ...

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'Blinking" crystals may convert CO2 into fuels

Unusual nanoparticles could could be useful for environmental cleanups, sensors, electronic devices and solar cells

21-Jul-2020

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 ...

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Scientists home in on pairs of atoms that boost a catalyst's activity

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

24-Jun-2020

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 ...

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Nanosafety research without animal experiments

Risk analyses for nanoparticles

23-Jun-2020

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 ...

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Easy as playing with Lego: Neat way to turn waste carbon dioxide into useful industrial products

Making catalysts has been expensive and complicated – until now

16-Jun-2020

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 ...

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How particulate matter arises from pollutant gases

International research project observes ultrafast particle growth through ammonia and nitric acid

15-May-2020

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 ...

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How new materials increase the efficiency of direct ethanol fuel cells

Composite membrane consists of Nafion with embedded nanoparticles

06-May-2020

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, ...

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