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Materials characterization of TiO(2) nanotubes decorated by Au nanoparticles for photoelectrochemical applications

The structural and chemical modification of TiO(2) nanotubes (NTs) by the deposition of a well-controlled Au deposit was investigated using a combination of X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), Scanning Transmission Electron Microscopy (STEM), Raman measurement...

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Autores principales: Pisarek, Marcin, Krawczyk, Mirosław, Kosiński, Andrzej, Hołdyński, Marcin, Andrzejczuk, Mariusz, Krajczewski, Jan, Bieńkowski, Krzysztof, Solarska, Renata, Gurgul, Magdalena, Zaraska, Leszek, Lisowski, Wojciech
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9044200/
https://www.ncbi.nlm.nih.gov/pubmed/35493210
http://dx.doi.org/10.1039/d1ra07443a
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author Pisarek, Marcin
Krawczyk, Mirosław
Kosiński, Andrzej
Hołdyński, Marcin
Andrzejczuk, Mariusz
Krajczewski, Jan
Bieńkowski, Krzysztof
Solarska, Renata
Gurgul, Magdalena
Zaraska, Leszek
Lisowski, Wojciech
author_facet Pisarek, Marcin
Krawczyk, Mirosław
Kosiński, Andrzej
Hołdyński, Marcin
Andrzejczuk, Mariusz
Krajczewski, Jan
Bieńkowski, Krzysztof
Solarska, Renata
Gurgul, Magdalena
Zaraska, Leszek
Lisowski, Wojciech
author_sort Pisarek, Marcin
collection PubMed
description The structural and chemical modification of TiO(2) nanotubes (NTs) by the deposition of a well-controlled Au deposit was investigated using a combination of X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), Scanning Transmission Electron Microscopy (STEM), Raman measurements, UV-Vis spectroscopy and photoelectrochemical investigations. The fabrication of the materials focused on two important factors: the deposition of Au nanoparticles (NPs) in UHV (ultra high vacuum) conditions (1–2 × 10(−8) mbar) on TiO(2) nanotubes (NTs) having a diameter of ∼110 nm, and modifying the electronic interaction between the TiO(2) NTs and Au nanoparticles (NPs) with an average diameter of about 5 nm through the synergistic effects of SMSI (Strong Metal Support Interaction) and LSPR (Local Surface Plasmon Resonance). Due to the formation of unique places in the form of “hot spots”, the proposed nanostructures proved to be photoactive in the UV-Vis range, where a characteristic gold plasmonic peak was observed at a wavelength of 580 nm. The photocurrent density of Au deposited TiO(2) NTs annealed at 650 °C was found to be much greater (14.7 μA cm(−2)) than the corresponding value (∼0.2 μA cm(−2)) for nanotubes in the as-received state. The IPCE (incident photon current efficiency) spectral evidence also indicates an enhancement of the photoconversion of TiO(2) NTs due to Au NP deposition without any significant change in the band gap energy of the titanium dioxide (E(g) ∼3.0 eV). This suggests that a plasmon-induced resonant energy transfer (PRET) was the dominant effect responsible for the photoactivity of the obtained materials.
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spelling pubmed-90442002022-04-28 Materials characterization of TiO(2) nanotubes decorated by Au nanoparticles for photoelectrochemical applications Pisarek, Marcin Krawczyk, Mirosław Kosiński, Andrzej Hołdyński, Marcin Andrzejczuk, Mariusz Krajczewski, Jan Bieńkowski, Krzysztof Solarska, Renata Gurgul, Magdalena Zaraska, Leszek Lisowski, Wojciech RSC Adv Chemistry The structural and chemical modification of TiO(2) nanotubes (NTs) by the deposition of a well-controlled Au deposit was investigated using a combination of X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), Scanning Transmission Electron Microscopy (STEM), Raman measurements, UV-Vis spectroscopy and photoelectrochemical investigations. The fabrication of the materials focused on two important factors: the deposition of Au nanoparticles (NPs) in UHV (ultra high vacuum) conditions (1–2 × 10(−8) mbar) on TiO(2) nanotubes (NTs) having a diameter of ∼110 nm, and modifying the electronic interaction between the TiO(2) NTs and Au nanoparticles (NPs) with an average diameter of about 5 nm through the synergistic effects of SMSI (Strong Metal Support Interaction) and LSPR (Local Surface Plasmon Resonance). Due to the formation of unique places in the form of “hot spots”, the proposed nanostructures proved to be photoactive in the UV-Vis range, where a characteristic gold plasmonic peak was observed at a wavelength of 580 nm. The photocurrent density of Au deposited TiO(2) NTs annealed at 650 °C was found to be much greater (14.7 μA cm(−2)) than the corresponding value (∼0.2 μA cm(−2)) for nanotubes in the as-received state. The IPCE (incident photon current efficiency) spectral evidence also indicates an enhancement of the photoconversion of TiO(2) NTs due to Au NP deposition without any significant change in the band gap energy of the titanium dioxide (E(g) ∼3.0 eV). This suggests that a plasmon-induced resonant energy transfer (PRET) was the dominant effect responsible for the photoactivity of the obtained materials. The Royal Society of Chemistry 2021-12-02 /pmc/articles/PMC9044200/ /pubmed/35493210 http://dx.doi.org/10.1039/d1ra07443a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Pisarek, Marcin
Krawczyk, Mirosław
Kosiński, Andrzej
Hołdyński, Marcin
Andrzejczuk, Mariusz
Krajczewski, Jan
Bieńkowski, Krzysztof
Solarska, Renata
Gurgul, Magdalena
Zaraska, Leszek
Lisowski, Wojciech
Materials characterization of TiO(2) nanotubes decorated by Au nanoparticles for photoelectrochemical applications
title Materials characterization of TiO(2) nanotubes decorated by Au nanoparticles for photoelectrochemical applications
title_full Materials characterization of TiO(2) nanotubes decorated by Au nanoparticles for photoelectrochemical applications
title_fullStr Materials characterization of TiO(2) nanotubes decorated by Au nanoparticles for photoelectrochemical applications
title_full_unstemmed Materials characterization of TiO(2) nanotubes decorated by Au nanoparticles for photoelectrochemical applications
title_short Materials characterization of TiO(2) nanotubes decorated by Au nanoparticles for photoelectrochemical applications
title_sort materials characterization of tio(2) nanotubes decorated by au nanoparticles for photoelectrochemical applications
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9044200/
https://www.ncbi.nlm.nih.gov/pubmed/35493210
http://dx.doi.org/10.1039/d1ra07443a
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