Photocatalytic Activity of Ag-TiO2 Composites Deposited by Photoreduction under UV Irradiation
Joint Authors
Diaz-Uribe, Carlos
Vallejo, William
Quiñones, Cesar
Viloria, Jose
Cervantes, Lorraine
Navarro, Karen
Romero, Eduard
Source
International Journal of Photoenergy
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-10-21
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
In this work, we synthesized Ag nanoparticles on TiO2 thin films deposited on soda lime glass substrates.
Ag nanoparticles were synthesized by photoreduction under UV irradiation silver nitrate solution.
X-ray diffraction, Raman spectroscopy, scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS) measurements were used for physicochemical characterization.
The structural study showed that all samples were polycrystalline, main phases were anatase and rutile, and no additional signals were detected after surface modification.
Raman spectroscopy suggested that silver aggregates deposited on the TiO2 films could exhibit the surface plasmon resonance (SPR) phenomenon; XPS and SEM analysis confirmed TiO2 film morphological modification after photoreduction process.
Photocatalytic degradation of methylene blue (MB) was studied under UV irradiation in aqueous solution, and, besides, pseudo-first-order model was used to obtain kinetic information about photocatalytic degradation.
Results indicated that Ag-TiO2 showed an important increase in photocatalytic activity under UV (from 20% to 35%); finally, Ag-TiO2 thin films had kapp value 2.4 × 10−3 ± 0.003 min−1 of 1.8 times greater than the kapp value 1.3 × 10−4 ± 0.0004 min−1 of TiO2 thin films.
American Psychological Association (APA)
Diaz-Uribe, Carlos& Viloria, Jose& Cervantes, Lorraine& Vallejo, William& Navarro, Karen& Romero, Eduard…[et al.]. 2018. Photocatalytic Activity of Ag-TiO2 Composites Deposited by Photoreduction under UV Irradiation. International Journal of Photoenergy،Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1174259
Modern Language Association (MLA)
Diaz-Uribe, Carlos…[et al.]. Photocatalytic Activity of Ag-TiO2 Composites Deposited by Photoreduction under UV Irradiation. International Journal of Photoenergy No. 2018 (2018), pp.1-8.
https://search.emarefa.net/detail/BIM-1174259
American Medical Association (AMA)
Diaz-Uribe, Carlos& Viloria, Jose& Cervantes, Lorraine& Vallejo, William& Navarro, Karen& Romero, Eduard…[et al.]. Photocatalytic Activity of Ag-TiO2 Composites Deposited by Photoreduction under UV Irradiation. International Journal of Photoenergy. 2018. Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1174259
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1174259