Title
Photoactive hybrid ZnO/N-Ag -TiO<inf>2</inf> films for photocatalytic water purification: Nanofibers vs nanorods
Date Issued
01 January 2019
Access level
metadata only access
Resource Type
conference paper
Publisher(s)
SPIE
Abstract
The light absorption of wide bandgap semiconductors in contaminated water, allows them to promote redox chemical reactions. The foremost condition that ensures success is related to the spontaneous jump in the energy of the photogenerated charge carriers. The jump is from their conduction/valence band energy positions to the oxidizing/reducing levels of those contaminants, which produces the so-called heterogeneous photocatalytic water purification. In this work, ZnO thin films composed by nanostructured nanofibers and nanorods (NRs) were compared to address the drawbacks such as low absorption of the solar spectra, low active surface area, charge carrier's recombination. These films were fabricated with various coupling and doped materials by electrospinning and hydrothermal techniques on fluorine-doped tin oxide (FTO) glass substrate. First, ZnO/TiO2 films were fabricated using different zinc acetate-to-PVA ratios by an electrostatically modified electrospinning technique and then sintered at 600°C. Second, ZnO doped with nitrogen and silver (ZnO:N-Ag) nanorods films were vertically supported on undoped and N doped ZnO seed layers fabricated with different N:Zn ratio in the solution precursor by a wet chemical method.
Volume
11371
Language
English
OCDE Knowledge area
Nano-procesos
Subjects
Publication version
Version of Record
Scopus EID
2-s2.0-85077821835
Source
Proceedings of SPIE - The International Society for Optical Engineering
Resource of which it is part
Proceedings of SPIE - The International Society for Optical Engineering
ISSN of the container
0277786X
ISBN of the container
978-151063513-5
Conference
International Workshop on Thin Films for Electronics, Electro-Optics, Energy, and Sensors 2019, TFE3S 2019
Sponsor(s)
Would like to thank the Peruvian Council for Science and Technology (CONCYTEC) for the Scholarship.
Sources of information:
Directorio de Producción Científica
Scopus