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Nature Points the way to a sustainable hydrogen economy
February 10, 2005"This is an exciting early step in developing a sustainable system for producing electricity from hydrogen" said Professor Chris Pickett (Associate Head of the Biological Chemistry Department at JIC). "In Nature iron-sulphur enzymes catalyse a range of important chemical reactions that industry can only do by using precious metal catalysts and/or high temperatures and pressures. Based on Nature's blueprint we are a step closer to building an iron-sulfur catalyst for reactions fundamental to a sustainable hydrogen economy".
As a blueprint for their syntheses the JIC team used the known molecular structures of the catalytic centre - 'the H-cluster'- found in the iron-only hydrogenase enzyme from two bacteria (Desulfovibrio desulfuricans and Clostridium pasteurianum). Hydrogenases catalyse interconversion of protons, electrons and hydrogen at extraordinary high rates. Their colleagues in Italy and the US [3] used state-of-the-art computational and spectroscopic techniques to probe the properties of the artificial H-cluster. The synthetic cluster was found to catalyse the reduction of protons to hydrogen albeit with poor energy efficiency. Nevertheless, the researchers believe their discovery should provide a lead to new materials that could eventually replace platinum.
John Innes Centre
Hydrogen Current Events and Hydrogen News RSSHubble captures outstanding views of mammoth stars
Two of our Galaxy's most massive stars have been scrutinised in an impressive view by the NASA/ESA Hubble Space Telescope. They have, until recently, been shrouded in mystery, but the new image shows them in greater detail than ever before.
Jupiter's rocky core bigger and icier, model predicts
Jupiter has a rocky core that is more than twice as large as previously thought, according to computer calculations by a University of California, Berkeley, geophysicist who simulated conditions inside the planet on the scale of individual hydrogen and helium atoms.
Stomach ulcer bug causes bad breath
Bacteria that cause stomach ulcers and cancer could also be giving us bad breath, according to research published in the December issue of the Journal of Medical Microbiology.
Mystery of missing hydrogen
Something vital is missing in the far distant reaches of the Universe: hydrogen - the raw material for stars, planets and possible life.
Astronomers catch binary star explosion inside nebula
The explosion of a binary star inside a planetary nebula has been captured by a team led by UCL (University College London) researchers - an event that has not been witnessed for more than 100 years.
APEX reveals glowing stellar nurseries
Illustrating the power of submillimetre-wavelength astronomy, an APEX image reveals how an expanding bubble of ionised gas about ten light-years across is causing the surrounding material to collapse into dense clumps that are the birthplaces of new stars. Submillimetre light is the key to revealing some of the coldest material in the Universe, such as these cold, dense clouds.
Clemson researchers advance nano-scale electromechanical sensors
Clemson physics professor Apparao Rao and his team are researching nano-scale cantilevers that have the potential to read and alert us to toxic chemicals or gases in the air. Put them into a small handheld device and the potential is there for real-time chemical alerts in battle, in industry, in health care and even at home.
Researchers discover method for mass production of nanomaterial graphene
Graphene is a perfect example of the wonders of nanotechnology, in which common substances are scaled down to an atomic level to uncover new and exciting possibilities.
Hydrogen tank lighter than battery
Dutch-sponsored researcher Robin Gremaud has shown that an alloy of the metals magnesium, titanium and nickel is excellent at absorbing hydrogen.
Investigation of changes in properties of water under the action of a magnetic field
Professor Pang Xiao-Feng and Deng Bo studied the properties of water, and their changes under the action of a magnetic field were gathered by the spectrum techniques of infrared, Raman, visible, ultraviolet and X-ray lights, which may give an insight into molecular and atomic structures of water.
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