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Hot holes are key in a plasmon-induced reaction of oxygen molecules on silver surfaces

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Hot holes are key in a plasmon-induced reaction of oxygen molecules on silver surfaces

Chemists at RIKEN have discovered why shining light on silver nanoparticles causes oxygen molecules attached to their surfaces to break off. This insight will help researchers design new catalysts that harness light energy. When metal nanoparticles are illuminated by light, molecules attached to them react faster than usual or participate in reactions they would not normally undergo. Such light-driven reactions are a promising way to convert sunlight into chemical energy, but their application is being held back due to the fact that no one is exactly sure how they occur. What is known is that shining light at a metal nanoparticle excites the conduction electrons in the metal, causing them to dance in sync with each other. These localized surface plasmons, as they are called, intensify the electric field close to the nanoparticle. Finally, the plasmon decays, releasing heat.
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Or simply relax and enjoy the warm fresh waters of Lake Malawi. There is the opportunity to meet the local people, by tradition very friendly, on an optional guided Village Walk, or you can simply head out and explore the lakeside, craft market and meet some of the locals. The town has colourful fruit and vegetable markets and an unexpected number of ornate mosques due to its large Indian community. If time allows, we will stop in Chipata before arriving to our accommodation situated a short distance from the town centre. Our accommodation for the evening is set in a tranquil and relaxing setting on a farm.
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Comments
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