Tag Archives: hydrogen gas

Evolution of a Bimetallic Nanocatalyst

Atomic-scale snapshots of a bimetallic nanoparticle catalyst in action have provided insights that could help improve the industrial process by which fuels and chemicals are synthesized from natural gas, coal or plant biomass. A multi-national lab collaboration led by researchers with the U.S. Department of Energy (DOE)’s Lawrence Berkeley National Laboratory (Berkeley Lab) has taken the most detailed look ever at the evolution of platinum/cobalt bimetallic nanoparticles during reactions in oxygen and hydrogen gases. (more…)

Read More

How Did Life Arise? Fuel Cells May Have Answers

How life arose from the toxic and inhospitable environment of our planet billions of years ago remains a deep mystery. Researchers have simulated the conditions of an early Earth in test tubes, even fashioning some of life’s basic ingredients. But how those ingredients assembled into living cells, and how life was first able to generate energy, remain unknown.

A new study led by Laurie Barge of NASA’s Jet Propulsion Laboratory in Pasadena, Calif., demonstrates a unique way to study the origins of life: fuel cells. (more…)

Read More

A cheaper drive to ‘cool’ fuels

UD scientists pioneer inexpensive catalyst to drive synthetic fuel production

University of Delaware chemist Joel Rosenthal is driven to succeed in the renewable energy arena. 

Working in his lab in UD’s Department of Chemistry and Biochemistry, Rosenthal and doctoral student John DiMeglio have developed an inexpensive catalyst that uses the electricity generated from solar energy to convert carbon dioxide, a major greenhouse gas, into synthetic fuels for powering cars, homes and businesses. 

The research is published in the June 19 issue of the Journal of the American Chemical Society. (more…)

Read More

Bright Stars to Black Holes: UA Astronomer Awarded for Her Research

In addition to being selected as one of 50 scholars awarded fellowships each year at the prestigious Radcliffe Institute at Harvard University, the UA’s Feryal Ozel has won the 2013 American Physical Society’s Maria Goeppert Mayer Award for her cutting-edge research on neutron stars.

Feryal Ozel studies two things most people don’t think about everyday: neutron stars and black holes.

An associate professor of astronomy at the University of Arizona, Ozel has won the 2013 American Physical Society’s Maria Goeppert Mayer Award for her work on neutron stars and her dedication to public outreach and education in science and astronomy. In addition, this year she is completing a prestigious fellowship at the Radcliffe Institute at Harvard University. Ozel came to the UA in 2003 as a NASA Hubble fellow and began a faculty position in 2005. (more…)

Read More

Measuring Table-Top Accelerators’ State-of-the-Art Beams

Studies by Berkeley Lab scientists of electron beam quality in laser plasma accelerators include novel tests for slice-energy spread

Part Two: Slicing through the electron beam

Wim Leemans of Berkeley Lab’s Accelerator and Fusion Research Division heads LOASIS, the Laser and Optical Accelerator Systems Integrated Studies, an oasis indeed for students pursuing graduate studies in laser plasma acceleration (LPA). Among the most promising applications of future table-top accelerators are new kinds of light sources, in which their electron beams power free electron lasers.

“If our LPA electron bunches had good enough quality for free electron lasers – and were really only femtoseconds long – we should see a particular kind of radiation called coherent optical transition radiation, or COTR,” Leemans says. “So I assigned my doctoral student Chen Lin, a graduate of Peking University and now a postdoc there, to find it.” (more…)

Read More

Fukushima Lesson: Prepare for Unanticipated Nuclear Accidents

ANN ARBOR, Mich.— A year after the crisis at Japan’s Fukushima Daiichi nuclear power plant, scientists and engineers remain largely in the dark when it comes to fundamental knowledge about how nuclear fuels behave under extreme conditions, according to a University of Michigan nuclear waste expert and his colleagues.

In a review article in this week’s edition of the journal Science, U-M’s Rodney Ewing and two colleagues call for an ambitious, long-term national research program to study how nuclear fuels behave under the extreme conditions present during core-melt events like those that occurred at Fukushima following the March 11, 2011, magnitude 9.0 earthquake and tsunami. (more…)

Read More

Hydrogen from Acidic Water: Berkeley Lab Researchers Develop a Potential Low Cost Alternative to Platinum for Splitting Water

A technique for creating a new molecule that structurally and chemically replicates the active part of the widely used industrial catalyst molybdenite has been developed by researchers with the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab). This technique holds promise for the creation of catalytic materials that can serve as effective low-cost alternatives to platinum for generating hydrogen gas from water that is acidic.

Christopher Chang and Jeffrey Long, chemists who hold joint appointments with Berkeley Lab and the University of California (UC) Berkeley, led a research team that synthesized a molecule to mimic the triangle-shaped molybdenum disulfide units along the edges of molybdenite crystals, which is where almost all of the catalytic activity takes place. Since the bulk of molybdenite crystalline material is relatively inert from a catalytic standpoint, molecular analogs of the catalytically active edge sites could be used to make new materials that are much more efficient and cost-effective catalysts. (more…)

Read More

Astronomy Team That Includes UCLA Finance Professor Discovers Nearby Dwarf Galaxy

A team led by UCLA research astronomer Michael Rich has used a unique telescope to discover a previously unknown companion to the nearby galaxy NGC 4449, which is some 12.5 million light years from Earth. The newly discovered dwarf galaxy had escaped even the prying eyes of the Hubble Space Telescope.

The research is published Feb. 9 in the journal Nature. (more…)

Read More