Two years ago, Hill

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Home Biofuels diesel dpf Develop an essential catalyst to generate hydrogen fuel using limpid water and sunlight develop an essential catalyst for generating clean hydrogen fuel using water and sunlight
Develop an essential for the generation of hydrogen fuel using limpid water and sunlight catalyst. Renewable energy, biofuels, hydrogen Chemicals Emory University have developed the most potent homogeneous catalyst known for water oxidation, considered a crucial component for generating clean hydrogen fuel using only water [...] It is also interesting:
Chemists at Emory University have developed the most potent homogeneous catalyst known for water oxidation, considered a crucial component for generating clean hydrogen fuel using only water and sunlight.
This breakthrough, published March 11 in the journal Science, was conducted in collaboration with the Institute of Molecular Chemistry in Paris. In the photo you can see the oxygen bubbles formed by water oxidation, catalyzed by the new tetra-cobalt diesel dpf WOC. The fastest catalyst, carbon-free molecular water oxidation to (WOC) known to date "has really raised the standard of the other known homogeneous diesel dpf WOCs" said Craig Hill, Emory inorganic chemist, whose lab led the project .
To be viable, WOC needs selectivity, stability and speed. Homogeneity is also a desired feature, because diesel dpf it increases the efficiency and makes it easier WOC studied and optimized.
Benjamin Yin, an undergraduate laboratory Hill, is the lead author of the Science paper. Emory chemists who are co-authors include Hill, Yuri Gueletii, Jamal Musaev, Zhen Luo and Ken Hardcastle. The Department of Energy funded the work.
The WOC research diesel dpf is a component of the Renewable Energy Center Emory Bio-inspired, which aims to mimic natural processes as photosynthesis to generate clean fuel. The next step is to incorporate the WOC in a system to remove diesel dpf the water using only sunlight.
The long-term goal is to use sunlight to split water into oxygen and hydrogen. Hydrogen fuel becomes. Its combustion produces water again - flowing again forming a clean, green, renewable cycle.
Three main technical challenges are involved: developing a light collector, a catalyst for oxidation of water to oxygen and a catalyst to reduce water to hydrogen. The three components need improvement, but a viable diesel dpf WOC may be the most difficult scientific challenge. "We diesel dpf are looking for a WOC that is free of organic structure, because organic components will combine with oxygen and self-destruct," says Hill.
Enzymes are natural catalysts. The enzyme in the evolution diesel dpf of oxygen in the center of green plants "is about the least stable catalyst in nature, and one of the most short-lived because it performs one of the hardest jobs," Hill says.
"We've duplicated this complex natural process by taking some of the essential characteristics of photosynthesis and we used synthetic, carbon-free system diesel dpf and homogeneous. The result is a catalyst for the oxidation of water that is much more stable than that found in nature. "
For decades, scientists have been trying to imitate Mother Nature and create diesel dpf a WOC for artificial photosynthesis. Almost all the 40 homogeneous WOC developed in labs have had significant limitations, as containing organic components that burn quickly during the water oxidation process.
Two years ago, Hill's lab and collaborators developed the first prototype of a stable, homogeneous carbon-free WOC, who has also worked faster than others known at the time. The prototype, however, was based on the ruthenium, a relatively rare and expensive element.
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