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New Molecule Able to Harness Entire Visible Spectrum

posted by Fnord666 on Friday January 24 2020, @03:33AM   Printer-friendly
from the just-add-oxygen dept.

RandomFactor writes:

Researchers at Ohio State University have published details in the journal Nature Chemistry on a molecule that efficiently absorbs light across the visible spectrum (and into both the ultraviolet and infrared) and catalyzes the production of Hydrogen.

The scientists demonstrate

a new, air-stable bimetallic scaffold that acts as a single-chromophore photocatalyst for hydrogen-gas generation and operates with irradiation wavelengths that span the ultraviolet to the red/near-infrared. Irradiation in acidic solutions that contain an electron donor results in the catalytic production of hydrogen with 170 ± 5 turnovers in 24 hours and an initial rate of 28 turnovers per hour. The catalysis proceeds through two stepwise excited-state redox events—atypical of the currently known homogeneous photocatalysis—and features the storage of multiple redox equivalents on a dirhodium catalyst enabled by low-energy light.

Current single-molecule photocatalysts are rare, inefficient, and don't use much of the visible light spectrum.

Most previous efforts to make full use of the sunlight spectrum have focused on ultraviolet light, and most relied on catalysts made of two or more molecules to convert solar energy into hydrogen. Attempts to use a single-molecule catalyst proved inefficient.

Rhodium however is expensive to process and the researchers are searching for a less expensive molecule which behaves similarly.

Journal Reference
Whittemore, T.J., Xue, C., Huang, J. et al. Single-chromophore single-molecule photocatalyst for the production of dihydrogen using low-energy light. Nat. Chem. (2020). https://doi.org/10.1038/s41557-019-0397-4

Original Submission

 
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  • (Score: 2) by c0lo on Friday January 24 2020, @04:28AM (2 children)

    by c0lo (156) Subscriber Badge on Friday January 24 2020, @04:28AM (#947840) Journal

    DOI of TO(riginal)FA [doi.org]
    Of course it's not free access, the fuckers!

    But maybe there's hope?

    Data availability

    All the data supporting the findings of this study are available from the corresponding author upon reasonable request. Crystallographic data for structure 1 reported in this article has been deposited at the Cambridge Crystallographic Data Centre under deposition number CCDC 1871363. Copies of the data can be obtained free of charge via https://www.ccdc.cam.ac.uk/structures/ [cam.ac.uk]

    So, I go to there and... mother-fucking Cambridge Brexiters!!! Just on top of the page:

    We are currently moving over to our 2020 licensing system and so if you no longer have access to all the WebCSD functionality then please select the 'Activate WebCSD' option in the top drop down menu and add your license details. For more details on activating WebCSD please click here.

    Cool. Then a certain site in Russia it is when I get home!

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  • (Score: 2) by NickM on Friday January 24 2020, @04:33AM (1 child)

    by NickM (2867) on Friday January 24 2020, @04:33AM (#947842) Journal
    The reliable mirror is in Taiwan (.tw) !
    you are talking about sci-hub ?
    --
    I a master of typographic, grammatical and miscellaneous errors !

    • (Score: 2) by c0lo on Friday January 24 2020, @04:45AM

      by c0lo (156) Subscriber Badge on Friday January 24 2020, @04:45AM (#947846) Journal

      Thanks for the tip.

      One doesn't talk in public about a site that's classified as breaching the copyright law.
      "The Fine Print:" notwithstanding, S/N has some obligations under Safe Harbor provision if, hypothetically speaking, someone were to activate a lawyerpult - I'd hate to have the Feds interrupting TMB's fishing with requests to take down comments or stories.
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