One-step preparation of nitrogen doped titanium oxide/Au/reduced graphene oxide composite thin films for photocatalytic applications

Abstract

Titanium dioxide (TiO2) and TiO2/Au/reduced graphene oxide nanocomposite thin films were grown by ultraviolet matrix assisted pulsed laser evaporation in controlled O2 or N2 atmospheres.

Esterification Process Induced by UV Irradiation of Shellac thin Films Deposited by Matrix Assisted Pulsed Laser Evaporation

“…These processes are also confirmed by FTIR investigation and point out towards a combination of film esterification and crosslinking process, which may induce the film densification. The nitrogen presence in the initial films is due to the deposition procedure for MAPLE [18], which implies target freezing by liquid nitrogen as well as introduction of nitrogen in the deposition chamber during ventilation, in order to avoid air admission and condensation of water in the system. Despite the nitrogen presence in the films, their properties are not significantly modified, suggesting its inclusion mostly in gaseous form.…”

Titanium oxide – reduced graphene oxide – silver composite layers synthesized by laser technique: Wetting and electrical properties

“…According to our recent investigations [11] the photocatalytic activity of the TiO 2 /rGO/Au ternary nanocomposite materials is around 170% higher than that of pure TiO 2 .…”

MAPLE synthesis of reduced graphene oxide/silver nanocomposite electrodes: Influence of target composition and gas ambience

“…Moreover, it has also been demonstrated ideal to transfer colloidal nanoparticles, quantum dots, inorganic nanomaterials and carbon nanostructures [52][53][54]. Thanks to the high dispersibility of GO nanosheets in water, and their relatively high absorbance in the UV range, inverse UV-MAPLE can become an alternative deposition method to the conventional techniques for the synthesis and deposition of hybrid rGO-NPs thin films at room temperature in different ambient conditions, as demonstrated recently [16,19,55].…”

“…Lastly, rGO can be functionalized through the incorporation of nitrogen species conferring different properties such as switching from p-to n-type semiconductor [14]. Besides the interest in standalone GO, there is great attention in the development of GO nanocomposite films with either metal (e.g., Ni, Au) or metal oxides nanoparticles (e.g., NiO, TiO 2 , SnO 2 , Fe 3 O 4 , MnO 2 ) that combine both the properties of GO and the nanoparticles (NPs) enhancing their performance for applications in photocatalysis, supercapacitors, electrochemistry, water-splitting, etc [15][16][17][18][19][20][21][22][23]. Recently, (r)GO-Ag composites are attracting high research interest due to their multifunctional properties and wide range of applications.…”