Good information. On Feb 24, 2017 10:55 AM, "Rajashree Salunke" <[email protected]> wrote:
> > Duke University researchers have engineered rhodium nanoparticles (blue) > that can harness the energy in ultraviolet light and use it to catalyze the > conversion of carbon dioxide to methane, a key building block for many > types of fuels. Credit: Chad Scales > Duke University researchers have developed tiny nanoparticles that help > convert carbon dioxide into methane using only ultraviolet light as an > energy source. > > > Having found a catalyst that can do this important chemistry using > ultraviolet light, the team now hopes to develop a version that would run > on natural sunlight, a potential boon to alternative energy. > > Chemists have long sought an efficient, light-driven catalyst to power > this reaction, which could help reduce the growing levels of carbon dioxide > in our atmosphere by converting it into methane, a key building block for > many types of fuels. > > Not only are the rhodium nanoparticles made more efficient when > illuminated by light, they have the advantage of strongly favoring the > formation of methane rather than an equal mix of methane and undesirable > side-products like carbon monoxide. This strong "selectivity" of the > light-driven catalysis may also extend to other important chemical > reactions, the researchers say. > > "The fact that you can use light to influence a specific reaction pathway > is very exciting," said Jie Liu, the George B. Geller professor of > chemistry at Duke University. "This discovery will really advance the > understanding of catalysis." > > The paper appears online Feb. 23 in Nature Communications. > > Despite being one of the rarest elements on Earth, rhodium plays a > surprisingly important role in our everyday lives. Small amounts of the > silvery grey metal are used to speed up or "catalyze" a number of key > industrial processes, including those that make drugs, detergents and > nitrogen fertilizer, and they even play a major role breaking down toxic > pollutants in the catalytic converters of our cars. > > Rhodium accelerates these reactions with an added boost of energy, which > usually comes in the form of heat because it is easily produced and > absorbed. However, high temperatures also cause problems, like shortened > catalyst lifetimes and the unwanted synthesis of undesired products. > > -- > ----------- > 1.ವಿಷಯ ಶಿಕ್ಷಕರ ವೇದಿಕೆಗೆ ಶಿಕ್ಷಕರನ್ನು ಸೇರಿಸಲು ಈ ಅರ್ಜಿಯನ್ನು ತುಂಬಿರಿ. > - https://docs.google.com/formsd1Iv5fotalJsERorsuN5v5yHG > uKrmpFXStxBwQSYXNbzI/viewform > 2. ಇಮೇಲ್ ಕಳುಹಿಸುವಾಗ ಗಮನಿಸಬೇಕಾದ ಕೆಲವು ಮಾರ್ಗಸೂಚಿಗಳನ್ನು ಇಲ್ಲಿ ನೋಡಿ. > -http://karnatakaeducation.org.in/KOER/index.php/ವಿಷಯಶಿಕ್ > ಷಕರವೇದಿಕೆ_ಸದಸ್ಯರ_ಇಮೇಲ್_ಮಾರ್ಗಸೂಚಿ > 3. ಐ.ಸಿ.ಟಿ ಸಾಕ್ಷರತೆ ಬಗೆಗೆ ಯಾವುದೇ ರೀತಿಯ ಪ್ರಶ್ನೆಗಳಿದ್ದಲ್ಲಿ ಈ ಪುಟಕ್ಕೆ ಭೇಟಿ > ನೀಡಿ - > http://karnatakaeducation.org.in/KOER/en/index.php/Portal:ICT_Literacy > 4.ನೀವು ಸಾರ್ವಜನಿಕ ತಂತ್ರಾಂಶ ಬಳಸುತ್ತಿದ್ದೀರಾ ? ಸಾರ್ವಜನಿಕ ತಂತ್ರಾಂಶದ ಬಗ್ಗೆ > ತಿಳಿಯಲು -http://karnatakaeducation.org.in/KOER/en/index.php/ > Public_Software > ----------- > --- > You received this message because you are subscribed to the Google Groups > "Maths & Science STF" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- ----------- 1.ವಿಷಯ ಶಿಕ್ಷಕರ ವೇದಿಕೆಗೆ ಶಿಕ್ಷಕರನ್ನು ಸೇರಿಸಲು ಈ ಅರ್ಜಿಯನ್ನು ತುಂಬಿರಿ. - https://docs.google.com/formsd1Iv5fotalJsERorsuN5v5yHGuKrmpFXStxBwQSYXNbzI/viewform 2. ಇಮೇಲ್ ಕಳುಹಿಸುವಾಗ ಗಮನಿಸಬೇಕಾದ ಕೆಲವು ಮಾರ್ಗಸೂಚಿಗಳನ್ನು ಇಲ್ಲಿ ನೋಡಿ. -http://karnatakaeducation.org.in/KOER/index.php/ವಿಷಯಶಿಕ್ಷಕರವೇದಿಕೆ_ಸದಸ್ಯರ_ಇಮೇಲ್_ಮಾರ್ಗಸೂಚಿ 3. ಐ.ಸಿ.ಟಿ ಸಾಕ್ಷರತೆ ಬಗೆಗೆ ಯಾವುದೇ ರೀತಿಯ ಪ್ರಶ್ನೆಗಳಿದ್ದಲ್ಲಿ ಈ ಪುಟಕ್ಕೆ ಭೇಟಿ ನೀಡಿ - http://karnatakaeducation.org.in/KOER/en/index.php/Portal:ICT_Literacy 4.ನೀವು ಸಾರ್ವಜನಿಕ ತಂತ್ರಾಂಶ ಬಳಸುತ್ತಿದ್ದೀರಾ ? ಸಾರ್ವಜನಿಕ ತಂತ್ರಾಂಶದ ಬಗ್ಗೆ ತಿಳಿಯಲು -http://karnatakaeducation.org.in/KOER/en/index.php/Public_Software ----------- --- You received this message because you are subscribed to the Google Groups "Maths & Science STF" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
