TiO2 thin films sensitization with natural dyes extracted from Bactris guineensis for photocatalytic applications: Experimental and DFT study

Diaz-Uribe C.; Vallejo W.; Romero E.; Villareal M.; Padilla M.; Hazbun N.; Muñoz-Acevedo A.; Schott E.; Zarate X.

dc.contributor.author	Diaz-Uribe C.
dc.contributor.author	Vallejo W.
dc.contributor.author	Romero E.
dc.contributor.author	Villareal M.
dc.contributor.author	Padilla M.
dc.contributor.author	Hazbun N.
dc.contributor.author	Muñoz-Acevedo A.
dc.contributor.author	Schott E.
dc.contributor.author	Zarate X.
dc.date.accessioned	2020-09-02T22:16:38Z
dc.date.available	2020-09-02T22:16:38Z
dc.date.issued	2020
dc.identifier	10.1016/j.jscs.2020.03.004
dc.identifier.citation	24, 5, 407-416
dc.identifier.issn	13196103
dc.identifier.uri	https://hdl.handle.net/20.500.12728/4271
dc.description	TiO2 thin films, sensitized by an anthocyanins-rich extract of a common species found in the Colombian Caribbean region (Bactris guineensis fruits), were used for the photocatalytic degradation of methylene blue. The sensitization process was verified by diffuse reflectance spectroscopy (DRS). The qualitative and quantitative analyses of the anthocyanins were carried out using high-performance liquid chromatography with photodiode array detection (HPLC-DAD), which provided the total content anthocyanin equivalent to delphinidin chloride (TAEDC) per mL of the extract, of 10.0 ± 0.8 µg TAEDC/mL. Here, three main anthocyanins were identified, being cyanidin-3-rutinoside the most abundant constituent (ca. 76%). The interaction of the dyes with a TiO2 slab model and their adsorption energies were determined through computational simulations. In addition, the molecular modelling evidenced that the sensitization of the semiconductor improved the light absorption in the visible range of the spectrum. As a final point, the photocatalytic test showed that the photocatalytic activity increased 26% for TiO2/B. guineensis thin films under visible radiation respect to bare TiO2. © 2020 The Authors
dc.language.iso	en
dc.publisher	Elsevier B.V.
dc.subject	Anthocyanin
dc.subject	DFT
dc.subject	Natural sensitizer
dc.subject	TiO2
dc.title	TiO2 thin films sensitization with natural dyes extracted from Bactris guineensis for photocatalytic applications: Experimental and DFT study
dc.type	Article

Ficheros en el ítem

Nombre:: item_2-s2.0-85082816297.pdf
Tamaño:: 2.577Kb
Formato:: PDF

Ver/

Este ítem aparece en la(s) siguiente(s) colección(ones)

Artículos científicos

Mostrar el registro sencillo del ítem

Repositorio Académico

TiO2 thin films sensitization with natural dyes extracted from Bactris guineensis for photocatalytic applications: Experimental and DFT study

Ficheros en el ítem

Este ítem aparece en la(s) siguiente(s) colección(ones)

Ítems relacionados

Improvement of the photocatalytic activity of TiO2 using Colombian Caribbean species (Syzygium cumini) as natural sensitizers: Experimental and theoretical studies (2020) ﻿

Potential use of an anthocyanin-rich extract from berries of Vaccinium meridionale Swartz as sensitizer for TiO2 thin films – An experimental and theoretical study (2020) ﻿

Adsorption and Photocatalytic Degradation of Methylene Blue on TiO2 Thin Films Impregnated with Anderson-Evans Al-Polyoxometalates: Experimental and DFT Study (2024) ﻿

Improvement of the photocatalytic activity of TiO2 using Colombian Caribbean species (Syzygium cumini) as natural sensitizers: Experimental and theoretical studies (2020)

Potential use of an anthocyanin-rich extract from berries of Vaccinium meridionale Swartz as sensitizer for TiO2 thin films – An experimental and theoretical study (2020)

Adsorption and Photocatalytic Degradation of Methylene Blue on TiO2 Thin Films Impregnated with Anderson-Evans Al-Polyoxometalates: Experimental and DFT Study (2024)