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Bacteria as climate heroes

Circular economy for CO2

18-Nov-2021

To establish a carbon-neutral circular economy in the future, technologies are needed that use carbon dioxide as a raw material. In the form of formate, CO2 can be metabolised by certain bacteria. Acetogens are a group of bacteria that can metabolise formate. For example, they form acetic acid – ...

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Tuneable Catalysis: Solving the Particle Size Puzzle

Scientists succeed in linking microscopic and macroscopic approaches - and thus solve an old puzzle

28-Oct-2021

Chemical reactions can be studied at different levels: At the level of individual atoms and molecules, new compounds can be designed. At the level of tiny particles on the nano and micrometre scale, one can understand how catalyst materials influence chemical reactions. And in order to use ...

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Anchoring single atoms

How can single atoms be used for catalysis? Researchers develop a new method to anchor single atoms to supports

01-Sep-2021

There is a dictum to “never change a running system”. New methods can however be far superior to older ones. While to date chemical reactions are mainly accelerated by catalytic materials that comprise several hundreds of atoms, the use of single atoms could provide a new approach for ...

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New Biochip Technology for Pharma Research

Reliable standard for tissue samples

28-May-2021

In pharmaceutical research, small tissue spheres are used as mini-organ models for reproducible tests. TU Wien has found a way to develop a reliable standard for these tissue samples. Before drugs are tested in clinical trials, they must be tested either by animal experiments or, more recently, ...

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Nanoparticles: The Complex Rhythm of Chemistry

Nanoparticles are often used as catalysts. The chemical reactions on their surface are more complex than previously thought

26-May-2021

Most of commercial chemicals are produced using catalysts. Usually, these catalysts consist of tiny metal nanoparticles that are placed on an oxidic support. Similar to a cut diamond, whose surface consists of different facets oriented in different directions, a catalytic nanoparticle also ...

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Tracking down the tiniest of forces: how T cells detect invaders

T cells use their antigen receptors like sticky fingers - a research team was able to observe them doing so

06-May-2021

T-cells play a central role in our immune system: by means of their so-called T-cell receptors (TCR) they make out dangerous invaders or cancer cells in the body and then trigger an immune reaction. On a molecular level, this recognition process is still not sufficiently understood. Intriguing ...

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The indestructible light beam

Researchers create special light waves that can penetrate even opaque materials as if the material was not even there

14-Apr-2021

Why is sugar not transparent? Because light that penetrates a piece of sugar is scattered, altered and deflected in a highly complicated way. However, as a research team from TU Wien (Vienna) and Utrecht University (Netherlands) has now been able to show, there is a class of very special light ...

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Single atoms as a catalyst: Surprising effects ensue

For years, the metal nanoparticles used in catalysts have been getting smaller and smaller. Now, a research team have shown that everything is suddenly different when you arrive at the smallest possible size: a single atom

26-Jan-2021

Metals such as gold or platinum are often used as catalysts. In the catalytic converters of vehicles, for example, platinum nanoparticles convert poisonous carbon monoxide into non-toxic CO2. Because platinum and other catalytically active metals are expensive and rare, the nanoparticles involved ...

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Why do metal oxide surfaces behave differently?

New research method answers important questions

15-Jan-2021

Metal surfaces play a role as catalysts for many important applications - from fuel cells to the purification of car exhaust gases. However, their behaviour is decisively affected by oxygen atoms incorporated into the surface. This phenomenon has been known for a long time, but until now it has ...

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Stable Catalysts for New Energy

Crucial new technologies such as hydrogen production or carbon capture require new catalysts. Experiments show: It's not just the material that matters, but also its atomic surface structure

26-Nov-2020

On the way to a CO2-neutral economy, we need to perfect a whole range of technologies - including the electrochemical extraction of hydrogen from water, fuel cells, or carbon capture. All these technologies have one thing in common: they only work if suitable catalysts are used. For many years, ...

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