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.
Highlights
Hydrogen production has become important due to the need to produce green energy and, reduce CO2 emissions resulting from the combustion of fossil fuels to the atmosphere
It is worth mentioning that electrolysis of water is the most efficient method for large-scale hydrogen production applied in carbon-free energetics [16,17,18,19,20]
We report experiments of laser-induced generation of hydrogen from water and saline by using graphene aerogel as a photocatalyst and CW infrared laser diode for excitation
Summary
Hydrogen production has become important due to the need to produce green energy and, reduce CO2 emissions resulting from the combustion of fossil fuels to the atmosphere. Laser-Induced Generation of Hydrogen in Water by Using Graphene Target. In our earlier experiments with methanol [36] and ethanol [37], we observed that the efficient generation of hydrogen occurred when graphene demonstrated intense white light emission under laser irradiation.
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