Photocatalytic Water Purification with ZnO Thin Films in Demineralized as Well as Natural Waters

Jean‐Claude Grivel*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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 languageEnglish
Article number1800880
JournalPhysica Status Solidi. A: Applications and Materials Science (Print)
Volume216
Issue number44
Number of pages5
ISSN1862-6300
DOIs
Publication statusPublished - 2019

Keywords

  • Films
  • Methylene blue
  • Photocatalysis
  • Water cleaning
  • ZnO

Cite this

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title = "Photocatalytic Water Purification with ZnO Thin Films in Demineralized as Well as Natural Waters",
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.",
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Photocatalytic Water Purification with ZnO Thin Films in Demineralized as Well as Natural Waters. / Grivel, Jean‐Claude.

In: Physica Status Solidi. A: Applications and Materials Science (Print), Vol. 216, No. 44, 1800880, 2019.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Photocatalytic Water Purification with ZnO Thin Films in Demineralized as Well as Natural Waters

AU - Grivel, Jean‐Claude

PY - 2019

Y1 - 2019

N2 - 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.

AB - 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.

KW - Films

KW - Methylene blue

KW - Photocatalysis

KW - Water cleaning

KW - ZnO

U2 - 10.1002/pssa.201800880

DO - 10.1002/pssa.201800880

M3 - Journal article

VL - 216

JO - Physica Status Solidi. A: Applications and Materials Science (Print)

JF - Physica Status Solidi. A: Applications and Materials Science (Print)

SN - 1862-6300

IS - 44

M1 - 1800880

ER -