Preparation of Ni(OH)2/CuO heterostructures for improved photocatalytic degradation of organic pollutants and microorganism

Er Chieh Cho, Cai Wan Chang-Jian, Jen Hsien Huang, Tzu Yen Huang, Nian Jheng Wu, Man Tzu Li, Yi Lun Chen, Shih Chieh Hsu, Huei Chu Weng, Kuen Chan Lee

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

In this study, the Ni(OH)2/CuO heterostructured photocatalysts have been prepared via microwave (MW) hydrothermal method. The results indicate that the Ni(OH)2/CuO heterostructured composite exhibits a strong absorption in the UV and Vis regions. The construction of the heterojunction also improves the photogenerated carrier transport and inhibits the electron–hole separation due to the enhanced absorbance and the well alignment of the energy band at the Ni(OH)2/CuO interface. The photocatalytic capability of the heterostructured composites with different Ni(OH)2/CuO molar ratios is evaluated by the photodegradation of methylene blue under visible light illumination. The results reveal that the Ni(OH)2/CuO (1:1) heterostructures show the best photocatalytic efficiency, which is 2.18 and 6.13 times higher than that of pure Ni(OH)2 and CuO, respectively. Besides, the Ni(OH)2/CuO composites also reveal remarkable biocompatibility and strong photocatalytic activity in the degradation of antibiotics such as ciprofloxacin (CIP) and tetracycline (TC) and inactivation of Escherichia coli (E. coli).

Original languageEnglish
Article number134484
JournalChemosphere
Volume300
DOIs
Publication statusPublished - Aug 2022

Keywords

  • CuO
  • Heterojunction
  • Microorganism
  • Ni(OH)
  • Photocatalyst

ASJC Scopus subject areas

  • Environmental Engineering
  • Chemistry(all)
  • Environmental Chemistry
  • Pollution
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

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