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Solar-driven reforming of lignocellulose to H2 with a CdS/CdOx photocatalyst

Nature energy, 2017-03, Vol.2 (4), p.17021, Article 17021 [Peer Reviewed Journal]

Copyright Nature Publishing Group Mar 2017 ;ISSN: 2058-7546 ;EISSN: 2058-7546 ;DOI: 10.1038/nenergy.2017.21

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  • Title:
    Solar-driven reforming of lignocellulose to H2 with a CdS/CdOx photocatalyst
  • Author: Wakerley, David W. ; Kuehnel, Moritz F. ; Orchard, Katherine L. ; Ly, Khoa H. ; Rosser, Timothy E. ; Reisner, Erwin
  • Subjects: Lignocellulose ; Photocatalysis ; Quantum dots
  • Is Part Of: Nature energy, 2017-03, Vol.2 (4), p.17021, Article 17021
  • Description: Lignocellulose is Earth's most abundant form of biomass and its valorization to H2 is a key objective for the generation of renewable fuels. Solar-driven photocatalytic reforming of lignocellulose to H2 at ambient temperature offers a sustainable route towards this goal, but this reaction is currently limited to noble-metal-containing systems that operate with low activity under ultraviolet light. Here, we report the light-driven photoreforming of cellulose, hemicellulose and lignin to H2 using semiconducting cadmium sulfide quantum dots in alkaline aqueous solution. We show that basic conditions cause these dots to become coated with oxide/hydroxide in situ, presenting a strategy to improve their photocatalytic performance. The system operates under visible light, is stable beyond six days and is even able to reform unprocessed lignocellulose, such as wood and paper, under solar irradiation at room temperature, presenting an inexpensive route to drive aqueous proton reduction to H2 through waste biomass oxidation.
  • Publisher: London: Nature Publishing Group
  • Language: English
  • Identifier: ISSN: 2058-7546
    EISSN: 2058-7546
    DOI: 10.1038/nenergy.2017.21
  • Source: AUTh Library subscriptions: ProQuest Central
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