Low-temperature deposition of CuAl2O4 thin film photocatalyst by ultrasonic spray pyrolysis

Iping Suhariadi, Yudi Rahmawan, Diva A.M. Muyassiroh, Muhammad A. Barrinaya, Jaka F. Fatriansyah

Research output: Contribution to journalArticlepeer-review


The formation of CuAl2O4 requires high processing temperature (T > 600 °C). In the present study, single phase CuAl2O4 thin film with porous microstructure was successfully synthesized at a low temperature of 400 °C using ultrasonic spray pyrolysis method. The FTIR result confirmed the presence of Cu–O and Al-O vibration from spinel CuAl2O4. The CuAl2O4 thin film with bandgap of 2.4 eV showed a good photocatalytic characteristic in decomposing methylene blue dye with efficiency of above 80% under solar irradiation for 3 hours.

Original languageEnglish
Article number131620
JournalMaterials Letters
Publication statusPublished - 15 Mar 2022


  • CuAlO
  • Organic dye
  • Photocatalytic
  • Thin Film
  • Ultrasonic spray pyrolysis


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