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Volume 3, Issue 2 (Suppl)
Trends in Green chem
ISSN: 2471-9889
Environmental & Green Chemistry 2017
July 24-26, 2017
Page 34
5
th
International Conference on
6
th
International Conference on
July 24-26, 2017 Rome, Italy
Environmental Chemistry and Engineering
Green Chemistry and Technology
&
Electrocatalytic production of hydrogen using iron sulfur cluster
Khalaf M Alenezi
University of Hail, KSA
I
n response to the energy crisis, rising fossil fuel costs and global climate warming, this study focuses on the electrocatalytic
reduction of proton into hydrogen using an iron sulfur cluster in the presence of pentafluorothiophenol. The direct reduction of
pentafluorothiophenol at vitreous carbon electrode occurs at Ep -1.3 V vs. Ag/AgCl in [Bu
4
N][BF
4
]-DMF solution. Interestingly, in
the presence of [Fe
4
S
4
(SPh)
4
][Bu
4
N]
2
, the reduction potential shifts significantly to -0.98 V vs. Ag/AgCl. Based on gas chromatography
analysis, the formation of H2 has been confirmed with a current efficiency of catalyst. 63% after two hours, while the chemical yield
at the carbon electrode was about 46%. On the other hand, no H2 gas was detected without catalyst. Importantly, the increment of the
concentration of acid (up to 18 equivalents) led to a positive shifting in the reduction potential until a value of 0.18 V. These results
reflect the exquisite electrocatalytic efficiency of the protein-like iron sulfur cluster in Hydrogen Evolution Reaction (HER).
k.alenezi@uoh.edu.saKhalaf M Alenezi, Trends in Green chem, 3:2
DOI: 10.21767/2471-9889-C1-002