Band Gap Implications on Nano-TiO2 Surface Modification with Ascorbic Acid for Visible Light-Active Polypropylene Coated Photocatalyst
The effect of surface modification using ascorbic acid as a surface modifier of nano-TiO2 heterogeneous photocatalyst was studied. The preparation of supported photocatalyst was made by a specific paste containing ascorbic acid modified TiO2 nanoparticles used to cover Polypropylene as a support mat...
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doaj-6b134514c3da4e1cb36d4bd991a241b32020-11-25T00:11:03ZengMDPI AGNanomaterials2079-49912018-08-018859910.3390/nano8080599nano8080599Band Gap Implications on Nano-TiO2 Surface Modification with Ascorbic Acid for Visible Light-Active Polypropylene Coated PhotocatalystChiara Anna D’Amato0Rita Giovannetti1Marco Zannotti2Elena Rommozzi3Marco Minicucci4Roberto Gunnella5Andrea Di Cicco6School of Science and Technology, Chemistry Division, University of Camerino, 62032 Camerino, ItalySchool of Science and Technology, Chemistry Division, University of Camerino, 62032 Camerino, ItalySchool of Science and Technology, Chemistry Division, University of Camerino, 62032 Camerino, ItalySchool of Science and Technology, Chemistry Division, University of Camerino, 62032 Camerino, ItalySchool of Science and Technology, Physics Division, University of Camerino, 62032 Camerino, ItalySchool of Science and Technology, Physics Division, University of Camerino, 62032 Camerino, ItalySchool of Science and Technology, Physics Division, University of Camerino, 62032 Camerino, ItalyThe effect of surface modification using ascorbic acid as a surface modifier of nano-TiO2 heterogeneous photocatalyst was studied. The preparation of supported photocatalyst was made by a specific paste containing ascorbic acid modified TiO2 nanoparticles used to cover Polypropylene as a support material. The obtained heterogeneous photocatalyst was thoroughly characterized (scanning electron microscope (SEM), RAMAN, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), photoluminescence (PL), and Diffuse Reflectance Spectra (DRS) and successfully applied in the visible light photodegradation of Alizarin Red S in water solutions. In particular, this new supported TiO2 photocatalyst showed a change in the adsorption mechanism of dye with respect to that of only TiO2 due to the surface properties. In addition, an improvement of photocatalytic performances in the visible light photodegration was obtained, showing a strict correlation between efficiency and energy band gap values, evidencing the favorable surface modification of TiO2 nanoparticles.http://www.mdpi.com/2079-4991/8/8/599heterogeneous photocatalysisTiO2ascorbic acidsurface modificationband gap energyAlizarin Red S |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Chiara Anna D’Amato Rita Giovannetti Marco Zannotti Elena Rommozzi Marco Minicucci Roberto Gunnella Andrea Di Cicco |
spellingShingle |
Chiara Anna D’Amato Rita Giovannetti Marco Zannotti Elena Rommozzi Marco Minicucci Roberto Gunnella Andrea Di Cicco Band Gap Implications on Nano-TiO2 Surface Modification with Ascorbic Acid for Visible Light-Active Polypropylene Coated Photocatalyst Nanomaterials heterogeneous photocatalysis TiO2 ascorbic acid surface modification band gap energy Alizarin Red S |
author_facet |
Chiara Anna D’Amato Rita Giovannetti Marco Zannotti Elena Rommozzi Marco Minicucci Roberto Gunnella Andrea Di Cicco |
author_sort |
Chiara Anna D’Amato |
title |
Band Gap Implications on Nano-TiO2 Surface Modification with Ascorbic Acid for Visible Light-Active Polypropylene Coated Photocatalyst |
title_short |
Band Gap Implications on Nano-TiO2 Surface Modification with Ascorbic Acid for Visible Light-Active Polypropylene Coated Photocatalyst |
title_full |
Band Gap Implications on Nano-TiO2 Surface Modification with Ascorbic Acid for Visible Light-Active Polypropylene Coated Photocatalyst |
title_fullStr |
Band Gap Implications on Nano-TiO2 Surface Modification with Ascorbic Acid for Visible Light-Active Polypropylene Coated Photocatalyst |
title_full_unstemmed |
Band Gap Implications on Nano-TiO2 Surface Modification with Ascorbic Acid for Visible Light-Active Polypropylene Coated Photocatalyst |
title_sort |
band gap implications on nano-tio2 surface modification with ascorbic acid for visible light-active polypropylene coated photocatalyst |
publisher |
MDPI AG |
series |
Nanomaterials |
issn |
2079-4991 |
publishDate |
2018-08-01 |
description |
The effect of surface modification using ascorbic acid as a surface modifier of nano-TiO2 heterogeneous photocatalyst was studied. The preparation of supported photocatalyst was made by a specific paste containing ascorbic acid modified TiO2 nanoparticles used to cover Polypropylene as a support material. The obtained heterogeneous photocatalyst was thoroughly characterized (scanning electron microscope (SEM), RAMAN, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), photoluminescence (PL), and Diffuse Reflectance Spectra (DRS) and successfully applied in the visible light photodegradation of Alizarin Red S in water solutions. In particular, this new supported TiO2 photocatalyst showed a change in the adsorption mechanism of dye with respect to that of only TiO2 due to the surface properties. In addition, an improvement of photocatalytic performances in the visible light photodegration was obtained, showing a strict correlation between efficiency and energy band gap values, evidencing the favorable surface modification of TiO2 nanoparticles. |
topic |
heterogeneous photocatalysis TiO2 ascorbic acid surface modification band gap energy Alizarin Red S |
url |
http://www.mdpi.com/2079-4991/8/8/599 |
work_keys_str_mv |
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