Effect of annealing temperature on the surface properties and photocatalytic efficiencies of Cu2O/CuO structures obtained by thermal oxidation of Cu layer on titanium substrates

Metin Yurddaskal*, Tuncay Dikici, Erdal Celik

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

In the present study, cuprous oxide (Cu2O)and cupric oxide (CuO) structures were prepared by thermal oxidation of electroplated copper (Cu) coatings on titanium substrates. The influence of different annealing temperatures from 200 to 600 °C on the morphology, crystal structure and the photocatalytic activity of the Cu2O and CuO structures were studied in detail. The photocatalysts were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). Photocatalytic activities of the samples were examined by the degradation of methylene blue (MB) under UV light irradiation. The spectroscopic analysis was investigated by UV–vis spectrophotometer. The results showed that the microstructure and surface morphology of the samples changed considerably at different annealing temperatures. The sample annealed at 500 °C exhibited the highest photocatalytic activity. The results indicated that need-like surface morphology and phase structure play an important role in enhancement the photocatalytic performance of Cu2O/CuO structures.

Original languageEnglish
Pages (from-to)17749-17753
Number of pages5
JournalCeramics International
Volume42
Issue number15
DOIs
Publication statusPublished - 2016
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2016 Elsevier Ltd and Techna Group S.r.l.

Keywords

  • CuO/CuO structures
  • Methylene blue
  • Microstructure
  • Oxidation
  • Photocatalytic activity

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