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Name that Scotch

Colorimetric recognition of aldehydes and ketones

25-Jul-2017

Vodka tastes different from brandy, and connoisseurs can distinguish among different brands of whiskeys. The flavors of spirits result from a complex bouquet of volatile compounds. New colorimetric sensor arrays on disposable test-strips read by hand-held devices allow for their rapid, ...

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Tough aqua material for water purification

20-Jan-2017

Water purification processes usually make use of robust membranes for filtering off contaminants while working at high pressures. Can materials employing water as major component be made strong enough to suit such a demanding application? Israeli scientists now report that a supramolecular aqua ...

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Composite material for water purification

Removal of multiple contaminants from water by supported ionic liquid phases

17-Jan-2017

Fresh, clean water coming directly from the tap is a true luxury. In developing countries, people often have no choice but to use a contaminated river for drinking water. Water filters can help by quickly converting polluted surface or ground water into safe drinking water. In the journal ...

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Hydrogen from sunlight - but as a dark reaction

Generation, storage, and time-delayed release of electrons in graphitic carbon nitride material for artificial photosynthesis

13-Dec-2016

The storage of photogenerated electric energy and its release on demand are still among the main obstacles in artificial photosynthesis. One of the most promising, recently identified photocatalytic new materials is inexpensive graphitic carbon nitride. Scientists have now explored a modified ...

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Fighting the gram-negatives

Natural products inspire the design of molecular agents against drug-resistant bacterial strains

31-Oct-2016

Many microorganisms produce secondary natural products, the potential antibiotic effects of which are extensively investigated. German scientists have now examined a class of quinone-like substances containing an additional epoxide functional group for their antibiotic activities. As they report, ...

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Recharging on stable, amorphous silicon

12-Oct-2016

Next-generation anodes for lithium ion batteries will probably no longer be made of graphite. Silicon, which is a related material, can provide a much higher capacity than graphite, but its crystallinity poses problems. Chinese scientists have introduced a porous silicon form that is amorphous, ...

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