Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Energy from Sunlight: Further Steps towards Artificial Photosynthesis

24.06.2016

Chemists from the Universities of Basel and Zurich have come one step closer to generating energy from sunlight: for the first time, they were able to reproduce one of the crucial phases of natural photosynthesis with artificial molecules. Their results have been published by the journal Angewandte Chemie (international edition).

Green plants are able to temporarily store electric charges after the absorption of sunlight by using a so-called molecular charge accumulator. The two research teams were able to observe this process in artificial molecules that they created specifically for this experiment.

Two charges stored shortly

The chemists excited the artificial molecules using a laser, which then made it possible to store two negative charges for a short time span for the very first time. They succeeded in storing the charges long enough, namely for 870 nanoseconds, thus making them effectively usable for artificial photosynthesis.

Importantly, the investigators carried out the charge accumulation without employing any sacrificial reagents. So far, charge accumulations in artificial molecules had only been possible using such sacrificial reagents. Large amounts of energy had to be used for these, which made a sustainable conversion of sunlight into chemically stored energy impossible.

“Our results represent a fundamental and important step on the path to artificial photosynthesis”, say Prof. Oliver Wenger (University of Basel) and Prof. Peter Hamm (University of Zurich), who jointly led the study. However, they claim, it is still a long way to go until the aspired sustainable application will become reality.

Conversion into fuel

The two research groups of the Universities of Basel and Zurich are currently investigating how the charge accumulation can be converted into a chemical fuel. As an inspiration, they look at green plants, which use charge accumulation to build vital, energy-rich substances. Artificial photosynthesis is considered a promising element of a sustainable future energy supply.

Original source

M. Orazietti, M. Kuss-Petermann, P. Hamm, O. S. Wenger
Light-Driven Electron Accumulation in a Molecular Pentad
Angew. Chem. Int. Ed. (2016), doi: 10.1002/anie.201604030 (English Version) und 10.1002/ange.201604030 (German Version).

Further information

Prof. Oliver Wenger, University of Basel, Department of Chemistry, phone: +41 61 267 11 46, email: oliver.wenger@unibas.ch

Prof. Peter Hamm, University of Zurich, Department of Chemistry, phone: +41 44 635 44 31, email: peter.hamm@chem.uzh.ch

Weitere Informationen:

http://onlinelibrary.wiley.com/doi/10.1002/anie.201604030/abstract - Abstract

Christoph Dieffenbacher | Universität Basel
Further information:
http://www.unibas.ch

More articles from Power and Electrical Engineering:

nachricht Industrial Maturity of Electrically Conductive Adhesives for Silicon Solar Cells Demonstrated
25.04.2018 | Fraunhofer-Institut für Solare Energiesysteme ISE

nachricht Silicon as a new storage material for the batteries of the future
25.04.2018 | Christian-Albrechts-Universität zu Kiel

All articles from Power and Electrical Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: BAM@Hannover Messe: innovative 3D printing method for space flight

At the Hannover Messe 2018, the Bundesanstalt für Materialforschung und-prüfung (BAM) will show how, in the future, astronauts could produce their own tools or spare parts in zero gravity using 3D printing. This will reduce, weight and transport costs for space missions. Visitors can experience the innovative additive manufacturing process live at the fair.

Powder-based additive manufacturing in zero gravity is the name of the project in which a component is produced by applying metallic powder layers and then...

Im Focus: Molecules Brilliantly Illuminated

Physicists at the Laboratory for Attosecond Physics, which is jointly run by Ludwig-Maximilians-Universität and the Max Planck Institute of Quantum Optics, have developed a high-power laser system that generates ultrashort pulses of light covering a large share of the mid-infrared spectrum. The researchers envisage a wide range of applications for the technology – in the early diagnosis of cancer, for instance.

Molecules are the building blocks of life. Like all other organisms, we are made of them. They control our biorhythm, and they can also reflect our state of...

Im Focus: Spider silk key to new bone-fixing composite

University of Connecticut researchers have created a biodegradable composite made of silk fibers that can be used to repair broken load-bearing bones without the complications sometimes presented by other materials.

Repairing major load-bearing bones such as those in the leg can be a long and uncomfortable process.

Im Focus: Writing and deleting magnets with lasers

Study published in the journal ACS Applied Materials & Interfaces is the outcome of an international effort that included teams from Dresden and Berlin in Germany, and the US.

Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...

Im Focus: Gamma-ray flashes from plasma filaments

Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.

The typical wavelength of light interacting with an object of the microcosm scales with the size of this object. For atoms, this ranges from visible light to...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

Unique scope of UV LED technologies and applications presented in Berlin: ICULTA-2018

12.04.2018 | Event News

IWOLIA: A conference bringing together German Industrie 4.0 and French Industrie du Futur

09.04.2018 | Event News

 
Latest News

Getting electrons to move in a semiconductor

25.04.2018 | Physics and Astronomy

Reconstructing what makes us tick

25.04.2018 | Physics and Astronomy

Cheap 3-D printer can produce self-folding materials

25.04.2018 | Information Technology

VideoLinks
Science & Research
Overview of more VideoLinks >>>