Watching a Bimetallic Catalytic Surface in Action

Such insight on working catalysts is only possible to obtain using state-of-the-art experimental techniques under reaction conditions

01-Sep-2023 - A team of researchers from the Department of Interface Science at the Fritz Haber Institute of the Max Planck Society addressed the question: what happens to a Ga-promoted Cu surface under reaction conditions required for the synthesis of methanol? They found complex structural transformations of ...

Researchers produce polymers from ballbot-type carbenes for the first time

Researchers have produced long-chain mobile polymers on metallic surfaces, doing so by means of ballbot-type molecules which glide over the surface

31-Aug-2023 - N-heterocyclic carbenes (NHCs) are small, reactive ring molecules which bond well with metallic surfaces and which, over the past few years, have attracted a great deal of interest in the field of the stable chemical modification of metallic surfaces. One property – discovered at the University ...

Microscopic Transformations of Electrocatalyst Surfaces

Researchers reveal the disordering of copper surfaces during catalysis

24-Aug-2023 - Developing technologies that can convert CO2 into synthetic fuels and base chemicals is of key importance for reaching the climate goals. The electrochemical reduction of CO2 at copper electrodes allows to do this directly with electric power from renewable sources which could be used for the ...

Shining potential of missing atoms

Single-atom vacancies in atomically thin insulators created in ultra-high vacuum

15-Jun-2023 - Single photons have applications in quantum computation, information networks, and sensors, and these can be emitted by defects in the atomically thin insulator hexagonal boron nitride (hBN). Missing nitrogen atoms have been suggested to be the atomic structure responsible for this activity, but ...

Next generation solar fuels: How a record-breaking copper catalyst converts CO₂ into liquid fuels

Researchers have made real-time movies of copper nanoparticles as they evolve to convert carbon dioxide and water into renewable fuels and chemicals

21-Feb-2023 - Since the 1970s, scientists have known that copper has a special ability to transform carbon dioxide into valuable chemicals and fuels. But for many years, scientists have struggled to understand how this common metal works as an electrocatalyst, a mechanism that uses energy from electrons to ...

New discoveries made about a promising solar cell material, thanks to new microscope

23-Nov-2022 - A team of scientists from the Department of Energy’s Ames National Laboratory developed a new characterization tool that allowed them to gain unique insight into a possible alternative material for solar cells. Under the leadership of Jigang Wang, senior scientist from Ames Lab, the team ...

Previously unseen processes reveal path to better rechargeable battery performance

A new electron microscopy technique allows to collect images of the inner workings of batteries

14-Nov-2022 - To design better rechargeable ion batteries, engineers and chemists from the University of Illinois Urbana-Champaign collaborated to combine a powerful new electron microscopy technique and data mining to visually pinpoint areas of chemical and physical alteration within ion batteries. A study ...

Sharper than ever: Physicists make molecular vibrations more detectable

The new method will improve the understanding of interactions in molecular systems and to further develop simulation methods

22-Sep-2022 - In molecules, the atoms vibrate with characteristic patterns and frequencies. Vibrations are therefore an important tool for studying molecules and molecular processes such as chemical reactions. Although scanning tunnelling microscopes can be used to image individual molecules, their vibrations ...

Tip tricks control reactions in a single molecule

Pulses from an atom-sharp tip enable researchers to break and form chemical bonds at will

31-Aug-2022 - Chemical reactions often produce messy mixtures of different products. Hence, chemists spend a lot of time coaxing their reactions to be more selective to make particular target molecules. Now, an international team of researchers has achieved that kind of selectivity by delivering voltage pulses ...

New Insights into the Interaction of Topological Insulators

26-Aug-2022 - Tungsten di-telluride (WTe2) has recently proven to be a promising material for the realization of topological states. These are regarded as the key to novel "spintronic" devices and quantum computers of the future due to their unique electronic properties. Physicists at Forschungszentrum Jülich ...