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Hydrogen Generation by Gamma Radiolysis of Aqueous Suspension of Nano Zirconia


Affiliations
1 Water and Steam Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
2 Radiation TeBhabha Atomic Research Centre, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
3 Radiation and Photochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
 

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(H2) 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.

Keywords

Gamma Radiolysis, Hydrogen Generation, Nano Zirconia, Water Splitting.
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  • Hydrogen Generation by Gamma Radiolysis of Aqueous Suspension of Nano Zirconia

Abstract Views: 370  |  PDF Views: 138

Authors

A. G. Kumbhar
Water and Steam Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
Y. K. Bhardwaj
Radiation TeBhabha Atomic Research Centre, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
D. B. Naik
Radiation and Photochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India

Abstract


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(H2) 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.

Keywords


Gamma Radiolysis, Hydrogen Generation, Nano Zirconia, Water Splitting.



DOI: https://doi.org/10.18520/cs%2Fv107%2Fi1%2F88-93