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NREL, Berkeley Lab propose efficiency and stability best-practices for solar water-splitting

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Scientists from the US Department of Energy’s National Renewable Energy Laboratory (NREL) and Lawrence Berkeley National Laboratory (Berkeley Lab) are providing researchers with a guide to how best to measure the efficiency of producing hydrogen directly from solar power. PEC water-splitting was first noted in scientific publications in 1972.

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Osaka team develops new solar-to-hydrogen catalyst that uses broader spectrum of light

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A team at Osaka University in Japan has developed a new material based on gold and black phosphorus to harvest a broader spectrum of sunlight for water-splitting to produce hydrogen. The three-part composite maximizes both absorbing light and its efficiency for water splitting. More recently, with adjustable band gap from 0.3

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Metallic nanostructures with strong light confinement can triple the efficiency of solar-based hydrogen generation

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Researchers led by a team from KAUST have found a more sustainable route to hydrogen fuel production using chaotic, light-trapping materials that mimic natural photosynthetic water splitting. The authors designed these to achieve broadband strong light confinement at the metal interface across the entire solar spectrum.

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Berkeley Lab solar-to-fuel system for CO2 to ethanol and ethylene; light-powered production of fuel via artificial photosynthesis

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Solar to chemical energy conversion could provide an alternative to mankind's unsustainable use of fossil fuels. Schematic of a solar-powered electrolysis cell which converts carbon dioxide into hydrocarbon and oxygenate products with an efficiency far higher than natural photosynthesis. —Gurudayal et al. Earlier post.).

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NREL researchers capture excess photon energy to produce solar fuels; higher efficiency water-splitting for H2

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The advancement could significantly boost the production of hydrogen from sunlight by using the cell to split water at a higher efficiency and lower cost than current photoelectrochemical approaches. Light is absorbed at the photoanode within the QD layer producing free electrons and holes. —Matthew Beard.

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Cambridge team demonstrates light-driven photoreforming of unprocessed biomass to H2 at room temperature

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A team of scientists at the University of Cambridge has reported the light-driven photoreforming of cellulose, hemicellulose and lignin to H 2 using semiconducting cadmium sulfide quantum dots in alkaline aqueous solution. CdS is an inexpensive, visible-light-absorbing photocatalyst with a bulk electronic bandgap of around 2.4

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Japan team reports pathway to green ammonia: photocatalytic conversion of nitrogen with water

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Researchers in Japan report that a commercially available TiO 2 with a large number of surface oxygen vacancies, when photo-irradiated by UV light in pure water with nitrogen—successfully produces ammonia (NH 3 ). Photocatalytic nitrogen reduction is an attractive pathway because it can use light energy, the team pointed out.

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