Abstract
ZnO films prepared on glass plates using a water based coating solution
are characterized and tested for methylene blue dye photocatalytic
decolourization in various types of waters (demineralized water, sea‐,
and lake‐water). The influence of various parameters such as wavelength
and attenuation of incident radiation by dye and/or organic matter is
studied. In demineralized water, up to 90% decoloration is achieved
within 1 h with 365 nm irradiation on a 10 ml solution. Although the ZnO
films still show some activity when illuminated by standard visible
light lamps, the efficiency of the photocatalytic process is greatly
reduced. Natural waters result in a significant decrease of the
photocatalytic activity, under both UV and visible light irradiation.
The main factor is believed to be enhanced UV light absorption within
the liquid. The influence of organic and mineral matter in natural
waters is briefly discussed.
Original language | English |
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Article number | 1800880 |
Journal | Physica Status Solidi - A - Applications and Materials Science |
Volume | 216 |
Issue number | 44 |
Number of pages | 5 |
ISSN | 1862-6319 |
DOIs | |
Publication status | Published - 2019 |
Keywords
- Films
- Methylene blue
- Photocatalysis
- Water cleaning
- ZnO