Abstract
This paper considers the photoelectrochemical characteristics of a composite porous TiO2 thin film with deposited plasmonic gold nanoparticles. The deposition of gold nanoparticles was carried out by the laser-induced chemical liquid-phase deposition (LCLD) method. The structural characteristics of the composite have been studied; it has been shown that the porous TiO2 film has a lattice related to the tetragonal system and is in the anatase phase. Gold nanoparticles form on the surface of a porous TiO2 film. A complex of photoelectrochemical measurements was carried out. It was shown that the deposition of plasmonic gold nanoparticles led to a significant increase in the photocurrent density by ~820%. The proposed concept is aimed at testing the method of forming a uniform layer of plasmonic gold nanoparticles on a porous TiO2 film, studying their photocatalytic properties for further scaling, and obtaining large area Au/TiO2/FTO photoelectrodes, including in the roll-to-roll process.
Highlights
Introduction conditions of the Creative CommonsPhotoelectrochemistry is one of an important area of chemical science and uses the renewable resource of the sun to initiate a complex of chemical transformations required in industry and in everyday life
We propose a simple technique for applying a layer of plasmonic gold nanoparticles to the surface of a porous TiO2 film in order to increase its photoelectrochemical characteristics
The laser-induced chemical liquid-phase deposition (LCLD) method was used to form a layer of plasmonic gold nanoparticles on the surface of a porous TiO2 film
Summary
Introduction conditions of the Creative CommonsPhotoelectrochemistry is one of an important area of chemical science and uses the renewable resource of the sun to initiate a complex of chemical transformations required in industry and in everyday life. A large number of photoactive semiconductor materials based on double or ternary oxides [10], sulfides [11], and phosphides [12] of transition metals exhibiting high activity in various photoelectrochemicals reactions have been studied and proposed. A significant problem is the fact that wide-gap semiconductors (especially oxide semiconductors) have a low absorption coefficient in thin layers. This problem was solved by applying metal nanoparticles, such as Au, Ag, Cu, etc., to the semiconductor [13,14,15]
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