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Chitosan films containing TiO2 nanoparticles modified with tungstophosphoric acid for the photobleaching of malachite green in solid-gas interfaces upon different wavelengths
Chitosan films containing TiO2 nanoparticles modified with tungstophosphoric acid for the photobleaching of malachite green in solid-gas interfaces upon different wavelengths
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Date
2018
Authors
Rengifo-Herrera J.A.
Marín-Silva D.A.
Mendoza-Portillo E.
Pinotti A.N.
Pizzio L.R.
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Volume Title
Publisher
Elsevier
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Abstract
Chitosan (CS) films containing visible light absorbing TiO2 nanoparticles modified with tungstophosphoric acid (TPA-TiO2) at different TPA-TiO2:CS ratios (10%, 20%, 30% and 40% (w/w) called CS/TPA-TiO2-10, CS/TPA-TiO2-20, CS/TPA-TiO2-30, and CS/TPA-TiO2-40 respectively) were prepared. Films were characterized by DRS, SEM-EDS, XRD, ATR-FT-IR, and contact angle (CA). Materials were evaluated in malachite green (MG) photobleaching solid-gas interface reactions upon different wavelengths.
Description
Authors thank Lilian Osiglio and Mariela Theiller for their experimental collaboration. Financial support from CONICET (Project PIP 0449) and Universidad Nacional de La Plata (Project X-773 and X-732) is also acknowledged. J.A. Rengifo-Herrera thanks Universidad Nacional de San Agustin and CONCYTEC from Peru for the financial support of E. Mendoza-Portillo’s scientific stage.
Keywords
Visible light,
Carbonate minerals,
Chitin,
Chitosan,
Irradiation,
Light,
Nanoparticles,
Phase interfaces,
Photobleaching,
Titanium dioxide,
Heteropoly acids,
Malachite green,
Self-cleaning film,
Tungstophosphoric acid,
Interfaces (materials)