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Photocatalytic optical fibers convert water into hydrogen

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Researchers at the University of Southampton have transformed optical fibers into photocatalytic microreactors that convert water into hydrogen fuel using solar energy. The researchers have published their proof-of-concept in ACS Photonics and will now establish wider studies that demonstrate the scalability of the platform.

Water 371
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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.

Water 170
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New mesocrystal photocatalyst enhances light-driven hydrogen production

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at 360 nm in overall water splitting and even good durability up to 1 day. When light is applied to photocatalysts, electrons and holes are produced on the surface of the catalyst; hydrogen is obtained when these electrons reduce the hydrogen ions in water. The mesocrystal also exhibits a high quantum yield of 6.7%

Light 150
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Researchers develop free-standing nanowire mesh for direct solar water-splitting to produce H2; new design for “artificial leaf”

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The mesh with BiVO 4 nanowire photoanode for water oxidation and Rh-SrTiO 3 nanowire photocathode for water reduction produces hydrogen gas without an electron mediator. When immersed in water with visible light irradiation (? ? In the present study, we developed a new architecture for direct solar water-splitting.

Water 270
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Volkswagen 2.0 TDI diesel for Euro 6d; SCR twin-dosing

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Here, two SCR catalytic converters work together to split nitrogen oxides into water and nitrogen using AdBlue urea solution. With its close proximity to the engine, it already lights off shortly after a cold start. It features a two-part design and, depending on the vehicle concept, has a volume of 2.5 As previously, the 2.0

Diesel 435
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MIT Researchers Engineer Viruses as Scaffolds for Photocatalytic Water Oxidation

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Angela Belcher, has engineered a common bacteriophage virus (M13) to function as a scaffold to mediate the co-assembly of zinc porphyrins (photosensitizer) and iridium oxide hydrosol clusters (catalyst) for visible light-driven water oxidation. The virus is a very efficient harvester of light, with these porphyrins attached.

MIT 207
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UC Berkeley hybrid semiconductor nanowire-bacteria system for direct solar-powered production of chemicals from CO2 and water

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Researchers at UC Berkeley have developed an artificial photosynthetic scheme for the direct solar-powered production of value-added chemicals from CO 2 and water using a two-step process involving a biocompatible light-capturing nanowire array with a direct interface with microbial systems. —Liu et al. coli strain.

Solar 150