NREL Melds Nature with Nanotech for Solar-Powered Hydrogen Production (Fact Sheet) [electronic resource]

• Ngôn ngữ: eng
• Ký hiệu phân loại: 621.48 Nuclear engineering
• Thông tin xuất bản: Golden, Colo. : Oak Ridge, Tenn. : National Renewable Energy Laboratory (U.S.) ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2011
• Mô tả vật lý: Size: 2 pp. : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 256872
• Chủ đề: 1. 08 hydrogen; 2. 14 solar energy; 3. 30 direct energy conversion; 4. 77 nanoscience and nanotechnology; 5. Atoms; 6. Catalysts; 7. Electrons; 8. Enzymes; 9. Et al; 10. Fuel cells; 11. Hydrogen

Tóm tắt

 NREL researchers are finding ways to mimic photosynthesis by combining enzymes with nanoparticles - particles on the scale of a billionth of a meter - to produce hydrogen directly from water and sunlight. This breakthrough project began in 2008 with scientists and researchers asking how they might learn from nature and develop a synthetic process that is more efficient than plants at converting sunlight to hydrogen. The goal was to find a new way to produce hydrogen that could then be commercialized inexpensively for fuel cells and other uses. Among the various approaches to making hydrogen, the NREL researchers wondered about a hybrid molecular assembly that might pair the best natural molecule with a synthesized nanoparticle. Researchers looked at using hydrogenase enzymes as one part of the equation. These biological catalysts can convert electrons and protons into hydrogen gas, or convert hydrogen into electrons and protons. The choice seemed worthwhile because the hydrogenase enzyme has some intriguing properties: a high substrate selectivity, meaning a very high preference for catalyzing reactions with protons rather than with other atoms and molecules
  and fast turnover, which enables it to produce a hydrogen molecule in milliseconds.