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Latest Photochemistry Stories

Nanotrees Harvest Sun's Energy, Turn Water Into Hydrogen Fuel
2012-03-08 04:51:22

Researchers focused on artificial photosynthesis University of California, San Diego electrical engineers are building a forest of tiny nanowire trees in order to cleanly capture solar energy without using fossil fuels and harvest it for hydrogen fuel generation. Reporting in the journal Nanoscale, the team said nanowires, which are made from abundant natural materials like silicon and zinc oxide, also offer a cheap way to deliver hydrogen fuel on a mass scale. "This is a clean way to...

2012-01-14 01:41:47

The world population is estimated to be seven billion and all these mouths need feeding. With fears about overfishing and the sustainability of fish stocks in our seas fish farming is becoming big business. As with all farming there are issues about maintaining the health of stock and how to prevent bacterial infection. New research published in BioMed Central's open access journal BMC Microbiology demonstrates that a prototype water purification reactor containing a thin film of titanium...

2011-12-19 14:26:12

Algal protein gives boost to electrochemical water splitting Water splitting in photo-electrochemical cells to yield hydrogen is a promising way to sustainable fuels. A team of Swiss and US scientists now made major progress in developing highly efficient electrodes — made of an algal protein, thus mimicking a central step in natural photosynthesis. Photosynthesis is considered the «Holy Grail» in the field of sustainable energy generation because it directly converts...

2011-10-14 20:49:05

A research group led by ETH Zurich has now, for the first time, visualized the motion of electrons during a chemical reaction. The new findings in the experiment are of fundamental importance for photochemistry and could also assist the design of more efficient solar cells. In 1999, Ahmed Zewail was awarded the nobel prize in chemistry for his studies of chemical reactions using ultrashort laser pulses. Zewail was able to watch the motion of atoms and thus visualize transition states on...

2011-05-11 00:27:49

This discovery will make it possible to improve photoelectrochemical cells. In the same way that plants use photosynthesis to transform sunlight into energy, these cells use sunlight to drive chemical reactions that ultimately produce hydrogen from water. The process involves using a light-sensitive semi-conducting material such as cuprous oxide to provide the current needed to fuel the reaction. Although it is not expensive, the oxide is unstable if exposed to light in water. Research by...

2011-05-05 05:30:00

MONTGOMERYVILLE, Pa., May 5, 2011 /PRNewswire/ -- PhotoMedex, Inc. (Nasdaq: PHMD) a leading supplier of advanced, clinical skincare and medical laser products, today introduced DNA Damage Control, the breakthrough treatment sunscreens that feature advanced photoprotection with DNA repair technology. Formulated by and marketed under the company's NEOVA® brand, the DNA Damage Control sunscreens offer an unrivaled repair and protect system that defends against photodamage...

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2011-04-15 07:13:29

Matt Shipman, North Carolina State University Researchers from North Carolina State University have created a range of soft, elastic gels that change color when exposed to ultraviolet (UV) light "“ and change back when the UV light is removed or the material is heated up. The gels are impregnated with a type of photochromic compound called spiropyran. Spiropyrans change color when exposed to UV light, and the color they change into depends on the chemical environment surrounding the...

2011-04-14 10:14:00

KARLSRUHE, Germany, April 14, 2011 /PRNewswire/ -- The exploitation and utilization of new energy sources are considered to be among today's major challenges. Solar energy plays a central role, and its direct conversion into chemical energy, for example hydrogen generation by water splitting, is one of its interesting variants. Titanium oxide-based photocatalysis is the presently most efficient, yet little understood conversion process. In cooperation with colleagues from Germany and...


Latest Photochemistry Reference Libraries

Photochemical & Photobiological Sciences
2012-05-28 10:25:06

Photochemical & Photobiological Sciences (PPS) is a peer-reviewed scientific journal published monthly by the Royal Society of Chemistry and is the official journal of the European Photochemistry Association, The European Society for Photobiology, the Asia and Oceania Society for Photobiology and the Korean Society of Photoscience. As of May 2012, the editors-in-chief are Frans de Schryver and Rex Tyrell. The journal covers numerous areas including: Applied photochemistry, Atmospheric...

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Word of the Day
lambent
  • Licking.
  • Hence Running along or over a surface, as if in the act of licking; flowing over or along; lapping or bathing; softly bright; gleaming.
This word comes the Latin 'lambere,' to lick.
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