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has been cited by the following article:

• TITLE: 1,4-Hydroquinone is a Hydrogen Reservoir for Fuel Cells and Recyclable via Photocatalytic Water Splitting

  AUTHORS: Thorsten Wilke, Michael Schneider, Karl Kleinermanns

  KEYWORDS: Fuel Cell; DMFC; Water Splitting; Recyclable Fue; TiO2; Chemical Hydrogen Storage; Quinones

  JOURNAL NAME: Open Journal of Physical Chemistry, Vol.3 No.2, May 24, 2013

  ABSTRACT: Photocatalytic splitting of water was carried out in a two-phase system. Nanocrystalline titanium dioxide was used as photocatalyst and potassium hexacyanoferrate(III)/(II) as electron transporter. Generated hydrogen was chemically stored by use of a 1,4-benzoquinone/1,4-hydroquinone system, which was used as a recyclable fuel in a commercialised direct methanol fuel cell (DMFC). The electrical output of the cell was about half compared to methanol. The conversion process for water splitting and recombination in a fuel cell was monitored by UV-Vis spectroscopy and compared to a simulated spectrum. Products of side reactions, which lead to a decrease of the overall efficiency, were identified based on UV-Vis investigations. A proof of principle for the use of quinoide systems as a recyclable hydrogen storage system in a photocatalytic water splitting and fuel cell cyclic process was given.