Hydrogen generation by gamma radiolysis of aqueous suspension of nano zirconia

Aqueous suspension of nano zirconia with methanol was irradiated with gamma (γ) rays. Hydrogen (H2) generated in this process was studied as a function of pH and γ-dose. In the presence of 1 M methanol and at pH 3.0, low gamma dose irradiation showed optimum H2 generation. This is explained on the b...

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Bibliographic Details
Published in:Current science (Bangalore) 2014-07, Vol.107 (1), p.88-93
Main Authors: Kumbhar, A. G., Bhardwaj, Y. K., Naik, D. B.
Format: Article
Language:English
Subjects:
Atoms
Chemical suspensions
Construction
Hydrogen
Irradiation
Methyl alcohol
Molecules
Nanostructure
Nitrogen
Oxygen
Radiolysis
RESEARCH COMMUNICATIONS
Surface charge
Vapor phases
Water splitting
Zirconium dioxide
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Summary:Aqueous suspension of nano zirconia with methanol was irradiated with gamma (γ) rays. Hydrogen (H2) generated in this process was studied as a function of pH and γ-dose. In the presence of 1 M methanol and at pH 3.0, low gamma dose irradiation showed optimum H2 generation. This is explained on the basis zeta potential and surface charge on zirconia particles. Positive surface charge at low pH could be the reason for enhanced H2 generation. Maximum H2 yield G(H) of 3.7 was observed. This is 400 times more compared to nano pure water. The method can be utilized for building a medium-scale H2 generation plant.
ISSN:0011-3891