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Laser-Induced Generation of Hydrogen in Water by Using Graphene Target
Wieslaw Strek1, Przemysław Wiewiórski1, Włodzimierz Miśta1
1Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-422 Wroclaw, Poland.
Abstract:
A new method of hydrogen generation from water, by irradiation with CW infrared laser diode of graphene scaffold immersed in solution, is reported. Hydrogen production was extremely efficient upon admixing NaCl into water. The efficiency of hydrogen production increased exponentially with laser power. It was shown that hydrogen production was highly efficient when the intense white light emission induced by laser irradiation of graphene foam was occurring. The mechanism of laser-induced dissociation of water is discussed. It was found that hydrogen production was extremely high, at about 80%, and assisted by a small emission of O2, CO and CO2 gases.

