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In this work substrates able to efficiently perform so-called photo-electrochemical process are proposed. The hybrid substrates consist of a plasmon-active gold structure and a certain number of TiO2 layers deposited by the atomic layer deposition (ALD) method. Above the influence of LED lamp irradiation (λ=850 nm) in the water splitting process, the enhancement of hydrogen production is observed (0.11 ppm/sec VS. 0.22 ppm/sec) which can be explained by creation of surface plasmon-polariton resonance (SPP), which occurs as a result of the excitation of collective electronic vibration on the periodical gold nanostructure under the incident light. Also, it is suggested that the combination of gold and titanium dioxide can lead to plasmon triggering of TiO2 catalytic activity, which will lead to decreasing energy costs on the photolysis of water and to the overall acceleration of the process.

The creation of Au@TiO2 plasmon-active structure for hydrogen production