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 New artificial leaf generates fuel from sunlight and water

  • Scientists have developed an artificial leaf that absorbs sunlight to generate hydrogen fuel from water, an advance that may provide clean energy for powering eco-friendly cars in the future.
  • The ultra-thin wireless device mimics plant leaves to produce energy using water and sunlight.
  • The device consists of semiconductors stacked in a manner to simulate the natural leaf system.
  • When visible light strikes the semiconductors, electrons move in one direction, producing electric current.
  • The current almost instantaneously splits water into hydrogen, which researchers believe is one of the cleanest forms of fuel as its main by-product is water.
Note:
  • At present, hydrogen is produced from fossil fuels by steam reforming and in this process, emits a large amount of carbon dioxide (CO2) - a greenhouse gas that promotes global warming.

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