Preparation of silica doped titania nanoparticles with thermal stability and photocatalytic properties and their application for leather surface functionalization

Doped nanoparticles based on titanium dioxide are of interest for their multifunctional properties and enlarged photocatalytic activity in visible domain. Silica doped titanium dioxide nanoparticles were prepared by hydrothermal method and their structural characteristics and photocatalytic activity...

Full description

Bibliographic Details
Main Authors: Carmen Gaidau, Aurora Petica, Madalina Ignat, Laura Madalina Popescu, Roxana Mioara Piticescu, Ioan Albert Tudor, Radu Robert Piticescu
Format: Article
Language:English
Published: Elsevier 2017-11-01
Series:Arabian Journal of Chemistry
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S1878535216301460
_version_ 1818542383180021760
author Carmen Gaidau
Aurora Petica
Madalina Ignat
Laura Madalina Popescu
Roxana Mioara Piticescu
Ioan Albert Tudor
Radu Robert Piticescu
author_facet Carmen Gaidau
Aurora Petica
Madalina Ignat
Laura Madalina Popescu
Roxana Mioara Piticescu
Ioan Albert Tudor
Radu Robert Piticescu
author_sort Carmen Gaidau
collection DOAJ
description Doped nanoparticles based on titanium dioxide are of interest for their multifunctional properties and enlarged photocatalytic activity in visible domain. Silica doped titanium dioxide nanoparticles were prepared by hydrothermal method and their structural characteristics and photocatalytic activity were determined, in order to be used for leather coating as alternative to halogen based flame retardants and dry cleaning solvents. A range of concentrations from 2% to 20% silica doped titanium dioxide nanoparticles (% denotes the theoretical weight percent of Si) was synthesized and characterized by ICP-OES, FT-IR, UV-vis spectroscopy, XRD, HRTEM and DLS. Titanium dioxide network penetration was supported by Si-O-Ti and OH identification in FT-IR spectra mainly on surface of 10% and 20% silica doped titanium dioxide nanoparticles. The increase of Si-O-Ti bonds with Si dopant concentration acts as efficient barriers against sinterization and growth of TiO2 particles and explains the low particle size identified in HRTEM analyses as compared to undoped TiO2NPs. UV-vis diffuse reflectance spectra of doped titanium dioxide nanoparticles showed the shifting of absorption band to visible domain for 10% silica doped titanium dioxide nanoparticles. The crystallite sizes were calculated from XRD spectra, ranging between 16.2 and 18.1 nm. HRTEM measurement of hydrothermally synthesized titanium dioxide nanoparticles showed anatase crystallites in the range of 8.8–27 nm, while in the 20% silica doped titanium dioxide nanoparticle sample smaller crystallite with sizes between 2.7 nm and 3.5 nm was identified due to the constraints of the SiO2-based amorphous matrix. Nano sizes of 64 nm and 72 nm were found in water dispersions of 10% and 20% silica doped titanium dioxide nanoparticles and the Zeta potentials were of −53.6 mV and −52.9 mV, which indicate very good stabilities. The leather surface treated with composites of film forming polymers and 10% silica doped titanium dioxide nanoparticles displayed photocatalytic properties against methylene blue dye under UV and visible light exposure, attributed to reactive species generation with effect on surface hydrophilicity increase. The activation energies for decomposition of leathers treated with 10% and 20% silica doped titanium dioxide nanoparticles were 2.083 × 104 J/mol and 2.36 × 104 J/mol respectively, as compared to 6.576 × 103 J/mol for untreated leathers, showing increased thermal stability according to DSC measurements. The hydrothermal route for silica doped nanoparticle preparation proved advantages in enhancing photocatalytic properties in the visible domain and thermal resistance, with prospect for multifunctional applications.
first_indexed 2024-12-11T22:21:21Z
format Article
id doaj.art-1ab2560c48484cf0a6a62ceeda24bd72
institution Directory Open Access Journal
issn 1878-5352
language English
last_indexed 2024-12-11T22:21:21Z
publishDate 2017-11-01
publisher Elsevier
record_format Article
series Arabian Journal of Chemistry
spelling doaj.art-1ab2560c48484cf0a6a62ceeda24bd722022-12-22T00:48:25ZengElsevierArabian Journal of Chemistry1878-53522017-11-01107985100010.1016/j.arabjc.2016.09.002Preparation of silica doped titania nanoparticles with thermal stability and photocatalytic properties and their application for leather surface functionalizationCarmen Gaidau0Aurora Petica1Madalina Ignat2Laura Madalina Popescu3Roxana Mioara Piticescu4Ioan Albert Tudor5Radu Robert Piticescu6Leather Research Department, INCDTP-Leather and Footwear Research Institute Division, 93, Ion Minulescu St., Bucharest, 3, 031215, RomaniaLeather Research Department, INCDTP-Leather and Footwear Research Institute Division, 93, Ion Minulescu St., Bucharest, 3, 031215, RomaniaLeather Research Department, INCDTP-Leather and Footwear Research Institute Division, 93, Ion Minulescu St., Bucharest, 3, 031215, RomaniaNanostructured Materials Laboratory, National R&D Institute for Non-Ferrous and Rare Metals, INCDMNR-IMNR, 102, Biruintei Blvd., Pantelimon, Ilfov 077145, RomaniaNanostructured Materials Laboratory, National R&D Institute for Non-Ferrous and Rare Metals, INCDMNR-IMNR, 102, Biruintei Blvd., Pantelimon, Ilfov 077145, RomaniaNanostructured Materials Laboratory, National R&D Institute for Non-Ferrous and Rare Metals, INCDMNR-IMNR, 102, Biruintei Blvd., Pantelimon, Ilfov 077145, RomaniaNanostructured Materials Laboratory, National R&D Institute for Non-Ferrous and Rare Metals, INCDMNR-IMNR, 102, Biruintei Blvd., Pantelimon, Ilfov 077145, RomaniaDoped nanoparticles based on titanium dioxide are of interest for their multifunctional properties and enlarged photocatalytic activity in visible domain. Silica doped titanium dioxide nanoparticles were prepared by hydrothermal method and their structural characteristics and photocatalytic activity were determined, in order to be used for leather coating as alternative to halogen based flame retardants and dry cleaning solvents. A range of concentrations from 2% to 20% silica doped titanium dioxide nanoparticles (% denotes the theoretical weight percent of Si) was synthesized and characterized by ICP-OES, FT-IR, UV-vis spectroscopy, XRD, HRTEM and DLS. Titanium dioxide network penetration was supported by Si-O-Ti and OH identification in FT-IR spectra mainly on surface of 10% and 20% silica doped titanium dioxide nanoparticles. The increase of Si-O-Ti bonds with Si dopant concentration acts as efficient barriers against sinterization and growth of TiO2 particles and explains the low particle size identified in HRTEM analyses as compared to undoped TiO2NPs. UV-vis diffuse reflectance spectra of doped titanium dioxide nanoparticles showed the shifting of absorption band to visible domain for 10% silica doped titanium dioxide nanoparticles. The crystallite sizes were calculated from XRD spectra, ranging between 16.2 and 18.1 nm. HRTEM measurement of hydrothermally synthesized titanium dioxide nanoparticles showed anatase crystallites in the range of 8.8–27 nm, while in the 20% silica doped titanium dioxide nanoparticle sample smaller crystallite with sizes between 2.7 nm and 3.5 nm was identified due to the constraints of the SiO2-based amorphous matrix. Nano sizes of 64 nm and 72 nm were found in water dispersions of 10% and 20% silica doped titanium dioxide nanoparticles and the Zeta potentials were of −53.6 mV and −52.9 mV, which indicate very good stabilities. The leather surface treated with composites of film forming polymers and 10% silica doped titanium dioxide nanoparticles displayed photocatalytic properties against methylene blue dye under UV and visible light exposure, attributed to reactive species generation with effect on surface hydrophilicity increase. The activation energies for decomposition of leathers treated with 10% and 20% silica doped titanium dioxide nanoparticles were 2.083 × 104 J/mol and 2.36 × 104 J/mol respectively, as compared to 6.576 × 103 J/mol for untreated leathers, showing increased thermal stability according to DSC measurements. The hydrothermal route for silica doped nanoparticle preparation proved advantages in enhancing photocatalytic properties in the visible domain and thermal resistance, with prospect for multifunctional applications.http://www.sciencedirect.com/science/article/pii/S1878535216301460Silica doped titanium dioxideNanostructuresMultifunctional coatingsSelf-cleaning propertiesThermal resistant leather
spellingShingle Carmen Gaidau
Aurora Petica
Madalina Ignat
Laura Madalina Popescu
Roxana Mioara Piticescu
Ioan Albert Tudor
Radu Robert Piticescu
Preparation of silica doped titania nanoparticles with thermal stability and photocatalytic properties and their application for leather surface functionalization
Arabian Journal of Chemistry
Silica doped titanium dioxide
Nanostructures
Multifunctional coatings
Self-cleaning properties
Thermal resistant leather
title Preparation of silica doped titania nanoparticles with thermal stability and photocatalytic properties and their application for leather surface functionalization
title_full Preparation of silica doped titania nanoparticles with thermal stability and photocatalytic properties and their application for leather surface functionalization
title_fullStr Preparation of silica doped titania nanoparticles with thermal stability and photocatalytic properties and their application for leather surface functionalization
title_full_unstemmed Preparation of silica doped titania nanoparticles with thermal stability and photocatalytic properties and their application for leather surface functionalization
title_short Preparation of silica doped titania nanoparticles with thermal stability and photocatalytic properties and their application for leather surface functionalization
title_sort preparation of silica doped titania nanoparticles with thermal stability and photocatalytic properties and their application for leather surface functionalization
topic Silica doped titanium dioxide
Nanostructures
Multifunctional coatings
Self-cleaning properties
Thermal resistant leather
url http://www.sciencedirect.com/science/article/pii/S1878535216301460
work_keys_str_mv AT carmengaidau preparationofsilicadopedtitaniananoparticleswiththermalstabilityandphotocatalyticpropertiesandtheirapplicationforleathersurfacefunctionalization
AT aurorapetica preparationofsilicadopedtitaniananoparticleswiththermalstabilityandphotocatalyticpropertiesandtheirapplicationforleathersurfacefunctionalization
AT madalinaignat preparationofsilicadopedtitaniananoparticleswiththermalstabilityandphotocatalyticpropertiesandtheirapplicationforleathersurfacefunctionalization
AT lauramadalinapopescu preparationofsilicadopedtitaniananoparticleswiththermalstabilityandphotocatalyticpropertiesandtheirapplicationforleathersurfacefunctionalization
AT roxanamioarapiticescu preparationofsilicadopedtitaniananoparticleswiththermalstabilityandphotocatalyticpropertiesandtheirapplicationforleathersurfacefunctionalization
AT ioanalberttudor preparationofsilicadopedtitaniananoparticleswiththermalstabilityandphotocatalyticpropertiesandtheirapplicationforleathersurfacefunctionalization
AT radurobertpiticescu preparationofsilicadopedtitaniananoparticleswiththermalstabilityandphotocatalyticpropertiesandtheirapplicationforleathersurfacefunctionalization