TiO                         2                         /SiO                         2                          porous composite thin films: Role of TiO                         2                          areal loading and modification with gold nanospheres on the photocatalytic activity

Irina Levchuk; Mika Sillanpää; Chantal Guillard; Damia Gregori; Denis Chateau; Stephane Parola

doi:10.1016/j.apsusc.2016.04.008

TiO ₂ /SiO ₂ porous composite thin films: Role of TiO ₂ areal loading and modification with gold nanospheres on the photocatalytic activity

Irina Levchuk, Mika Sillanpää, Chantal Guillard, Damia Gregori, Denis Chateau, Stephane Parola

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

Abstract

The aim of the work was to study photocatalytic activity of composite TiO ₂ /Au/SiO ₂ thin films. Coatings were prepared using sol-gel technique. Physicochemical parameters of coatings were characterized using UV–vis spectrometry, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectrometry (XPS), inductively coupled plasma optical emission spectroscopy (ICP-OES), ellipsometry, tactile measurements, goniometry and diffuse reflectance measurements. The photocatalytic activity of the films was tested in batch mode using aqueous solution of formic acid. Changes of formic acid concentration were determined by means of high pressure liquid chromatography (HPLC). Increase of initial degradation rate of formic acid was detected for TiO ₂ /Au/SiO ₂ films with gold nanoparticle's load 0.5 wt.% and 1.25 wt.%. However, deeper insights using more detailed characterization of these coatings demonstrated that the improvement of the photocatalytic activity is more probably attributed to an increase in the areal loading of TiO ₂ .

Original language	English
Pages (from-to)	367-374
Number of pages	8
Journal	Applied Surface Science
Volume	383
DOIs	https://doi.org/10.1016/j.apsusc.2016.04.008
Publication status	Published - 15 Oct 2016
Externally published	Yes

Keywords

Coatings
Gold nanoparticles
Photocatalysis
Sol-gel
TiO

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
General Physics and Astronomy
Surfaces and Interfaces
Surfaces, Coatings and Films

Access to Document

10.1016/j.apsusc.2016.04.008

Cite this

Levchuk, I., Sillanpää, M., Guillard, C., Gregori, D., Chateau, D., & Parola, S. (2016). TiO ₂ /SiO ₂ porous composite thin films: Role of TiO ₂ areal loading and modification with gold nanospheres on the photocatalytic activity. Applied Surface Science, 383, 367-374. https://doi.org/10.1016/j.apsusc.2016.04.008

Levchuk, Irina ; Sillanpää, Mika ; Guillard, Chantal et al. / TiO ₂ /SiO ₂ porous composite thin films : Role of TiO ₂ areal loading and modification with gold nanospheres on the photocatalytic activity. In: Applied Surface Science. 2016 ; Vol. 383. pp. 367-374.

@article{c8c504aadda2410aae998c383f9addfa,

title = "TiO 2 /SiO 2 porous composite thin films: Role of TiO 2 areal loading and modification with gold nanospheres on the photocatalytic activity",

abstract = " The aim of the work was to study photocatalytic activity of composite TiO 2 /Au/SiO 2 thin films. Coatings were prepared using sol-gel technique. Physicochemical parameters of coatings were characterized using UV–vis spectrometry, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectrometry (XPS), inductively coupled plasma optical emission spectroscopy (ICP-OES), ellipsometry, tactile measurements, goniometry and diffuse reflectance measurements. The photocatalytic activity of the films was tested in batch mode using aqueous solution of formic acid. Changes of formic acid concentration were determined by means of high pressure liquid chromatography (HPLC). Increase of initial degradation rate of formic acid was detected for TiO 2 /Au/SiO 2 films with gold nanoparticle's load 0.5 wt.% and 1.25 wt.%. However, deeper insights using more detailed characterization of these coatings demonstrated that the improvement of the photocatalytic activity is more probably attributed to an increase in the areal loading of TiO 2 .",

keywords = "Coatings, Gold nanoparticles, Photocatalysis, Sol-gel, TiO",

author = "Irina Levchuk and Mika Sillanp{\"a}{\"a} and Chantal Guillard and Damia Gregori and Denis Chateau and Stephane Parola",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

year = "2016",

month = oct,

day = "15",

doi = "10.1016/j.apsusc.2016.04.008",

language = "English",

volume = "383",

pages = "367--374",

journal = "Applied Surface Science",

issn = "0169-4332",

publisher = "Elsevier",

}

Levchuk, I, Sillanpää, M, Guillard, C, Gregori, D, Chateau, D & Parola, S 2016, 'TiO ₂ /SiO ₂ porous composite thin films: Role of TiO ₂ areal loading and modification with gold nanospheres on the photocatalytic activity', Applied Surface Science, vol. 383, pp. 367-374. https://doi.org/10.1016/j.apsusc.2016.04.008

TiO ₂ /SiO ₂ porous composite thin films: Role of TiO ₂ areal loading and modification with gold nanospheres on the photocatalytic activity. / Levchuk, Irina; Sillanpää, Mika; Guillard, Chantal et al.
In: Applied Surface Science, Vol. 383, 15.10.2016, p. 367-374.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - TiO 2 /SiO 2 porous composite thin films

T2 - Role of TiO 2 areal loading and modification with gold nanospheres on the photocatalytic activity

AU - Levchuk, Irina

AU - Sillanpää, Mika

AU - Guillard, Chantal

AU - Gregori, Damia

AU - Chateau, Denis

AU - Parola, Stephane

PY - 2016/10/15

Y1 - 2016/10/15

N2 - The aim of the work was to study photocatalytic activity of composite TiO 2 /Au/SiO 2 thin films. Coatings were prepared using sol-gel technique. Physicochemical parameters of coatings were characterized using UV–vis spectrometry, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectrometry (XPS), inductively coupled plasma optical emission spectroscopy (ICP-OES), ellipsometry, tactile measurements, goniometry and diffuse reflectance measurements. The photocatalytic activity of the films was tested in batch mode using aqueous solution of formic acid. Changes of formic acid concentration were determined by means of high pressure liquid chromatography (HPLC). Increase of initial degradation rate of formic acid was detected for TiO 2 /Au/SiO 2 films with gold nanoparticle's load 0.5 wt.% and 1.25 wt.%. However, deeper insights using more detailed characterization of these coatings demonstrated that the improvement of the photocatalytic activity is more probably attributed to an increase in the areal loading of TiO 2 .

AB - The aim of the work was to study photocatalytic activity of composite TiO 2 /Au/SiO 2 thin films. Coatings were prepared using sol-gel technique. Physicochemical parameters of coatings were characterized using UV–vis spectrometry, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectrometry (XPS), inductively coupled plasma optical emission spectroscopy (ICP-OES), ellipsometry, tactile measurements, goniometry and diffuse reflectance measurements. The photocatalytic activity of the films was tested in batch mode using aqueous solution of formic acid. Changes of formic acid concentration were determined by means of high pressure liquid chromatography (HPLC). Increase of initial degradation rate of formic acid was detected for TiO 2 /Au/SiO 2 films with gold nanoparticle's load 0.5 wt.% and 1.25 wt.%. However, deeper insights using more detailed characterization of these coatings demonstrated that the improvement of the photocatalytic activity is more probably attributed to an increase in the areal loading of TiO 2 .

KW - Coatings

KW - Gold nanoparticles

KW - Photocatalysis

KW - Sol-gel

KW - TiO

UR - http://www.scopus.com/inward/record.url?scp=84988712652&partnerID=8YFLogxK

U2 - 10.1016/j.apsusc.2016.04.008

DO - 10.1016/j.apsusc.2016.04.008

M3 - Article

AN - SCOPUS:84988712652

SN - 0169-4332

VL - 383

SP - 367

EP - 374

JO - Applied Surface Science

JF - Applied Surface Science

ER -

Levchuk I, Sillanpää M, Guillard C, Gregori D, Chateau D, Parola S. TiO ₂ /SiO ₂ porous composite thin films: Role of TiO ₂ areal loading and modification with gold nanospheres on the photocatalytic activity. Applied Surface Science. 2016 Oct 15;383:367-374. doi: 10.1016/j.apsusc.2016.04.008