Chitosan-mediated synthesis of flowery-CuO, and its antibacterial and catalytic properties

Gownolla Malegowd Raghavendra, Jeyoung Jung, Dowan Kim, Jongchul Seo

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)


In the current investigation, CuO with a flower-like morphology has been successfully synthesized in situ in a chitosan medium (0.0015 g mL−1) from copper nitrate (Cu(NO3)2·3H2O) and ammonia solution via a facile microwave-induced method. The as-prepared CuO was characterized by SEM, TEM, EDX, XRD, FTIR and TGA. The antibacterial activity of the flower-CuO against Escherichia coli was examined by analyzing colony forming units, and it was proved that the flower-CuO was able to kill >99% bacteria. Further, the flower-CuO exhibited excellent catalytic activity towards the reduction of 4-nitrophenol to 4-aminophenol in the presence of NaBH4. The reaction kinetics followed a pseudo-first-order rate law with a rate constant of 0.183 min−1. To the best of our knowledge, this is the first time that copper oxide with the flower-like morphology has been synthesized by using a chitosan solution.

Original languageEnglish
Pages (from-to)78-84
Number of pages7
JournalCarbohydrate Polymers
Publication statusPublished - 2017 Sept 15

Bibliographical note

Publisher Copyright:
© 2017 Elsevier Ltd

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry


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